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Nies L, Canete L, Dao DD, Giraud S, Kankainen A, Lunney D, Nowacki F, Bastin B, Stryjczyk M, Ascher P, Blaum K, Cakirli RB, Eronen T, Fischer P, Flayol M, Girard Alcindor V, Herlert A, Jokinen A, Khanam A, Köster U, Lange D, Moore ID, Müller M, Mougeot M, Nesterenko DA, Penttilä H, Petrone C, Pohjalainen I, de Roubin A, Rubchenya V, Schweiger C, Schweikhard L, Vilen M, Äystö J. Further Evidence for Shape Coexistence in ^{79}Zn^{m} near Doubly Magic ^{78}Ni. Phys Rev Lett 2023; 131:222503. [PMID: 38101393 DOI: 10.1103/physrevlett.131.222503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 09/16/2023] [Accepted: 10/25/2023] [Indexed: 12/17/2023]
Abstract
Isomers close to doubly magic _{28}^{78}Ni_{50} provide essential information on the shell evolution and shape coexistence near the Z=28 and N=50 double shell closure. We report the excitation energy measurement of the 1/2^{+} isomer in _{30}^{79}Zn_{49} through independent high-precision mass measurements with the JYFLTRAP double Penning trap and with the ISOLTRAP multi-reflection time-of-flight mass spectrometer. We unambiguously place the 1/2^{+} isomer at 942(10) keV, slightly below the 5/2^{+} state at 983(3) keV. With the use of state-of-the-art shell-model diagonalizations, complemented with discrete nonorthogonal shell-model calculations which are used here for the first time to interpret shape coexistence, we find low-lying deformed intruder states, similar to other N=49 isotones. The 1/2^{+} isomer is interpreted as the bandhead of a low-lying deformed structure akin to a predicted low-lying deformed band in ^{80}Zn, and points to shape coexistence in ^{79,80}Zn similar to the one observed in ^{78}Ni. The results make a strong case for confirming the claim of shape coexistence in this key region of the nuclear chart.
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Affiliation(s)
- L Nies
- European Organization for Nuclear Research (CERN), Meyrin, 1211 Geneva, Switzerland
- Institut für Physik, Universität Greifswald, 17487 Greifswald, Germany
| | - L Canete
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
- Department of Physics, University of Surrey, Guildford GU2 7X5, United Kingdom
| | - D D Dao
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - S Giraud
- GANIL, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
| | - A Kankainen
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
| | - D Lunney
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - F Nowacki
- Université de Strasbourg, CNRS, IPHC UMR 7178, F-67000 Strasbourg, France
| | - B Bastin
- GANIL, Bd Henri Becquerel, BP 55027, F-14076 Caen Cedex 5, France
| | - M Stryjczyk
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
| | - P Ascher
- Université de Bordeaux, CNRS/IN2P3-Université, CNRS/IN2P3, LP2I Bordeaux, UMR 5797, F-33170 Gradignan, France
| | - K Blaum
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - R B Cakirli
- Department of Physics, Istanbul University, Istanbul 34134, Turkey
| | - T Eronen
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
| | - P Fischer
- Institut für Physik, Universität Greifswald, 17487 Greifswald, Germany
| | - M Flayol
- Université de Bordeaux, CNRS/IN2P3-Université, CNRS/IN2P3, LP2I Bordeaux, UMR 5797, F-33170 Gradignan, France
| | | | - A Herlert
- FAIR GmbH, Planckstraße 1, 64291 Darmstadt, Germany
| | - A Jokinen
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
| | - A Khanam
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
- Department of Applied Physics, Aalto University, P.O. Box 15100, FI-00076 Aalto, Finland
- Department of Physics, University of Helsinki, P.O. Box 43, FI-00014 Helsinki, Finland
| | - U Köster
- European Organization for Nuclear Research (CERN), Meyrin, 1211 Geneva, Switzerland
- Institut Laue-Langevin, 38000 Grenoble, France
| | - D Lange
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - I D Moore
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
| | - M Müller
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - M Mougeot
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - D A Nesterenko
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
| | - H Penttilä
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
| | - C Petrone
- IFIN-HH, P.O. Box MG-6, 077125 Bucharest-Magurele, Romania
| | - I Pohjalainen
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
| | - A de Roubin
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
| | - V Rubchenya
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
| | - Ch Schweiger
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - L Schweikhard
- Institut für Physik, Universität Greifswald, 17487 Greifswald, Germany
| | - M Vilen
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
| | - J Äystö
- University of Jyvaskyla, Department of Physics, Accelerator laboratory, P.O. Box 35(YFL), FI-40014, University of Jyvaskyla, Finland
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Gao Z, Solders A, Al-Adili A, Beliuskina O, Eronen T, Kankainen A, Lantz M, Moore ID, Nesterenko DA, Penttilä H, Pomp S, Sjöstrand H. Applying machine learning methods for the analysis of two-dimensional mass spectra. Eur Phys J A Hadron Nucl 2023; 59:169. [PMID: 37502124 PMCID: PMC10368573 DOI: 10.1140/epja/s10050-023-01080-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 07/06/2023] [Indexed: 07/29/2023]
Abstract
In a measurement of isomeric yield-ratios in fission, the Phase-Imaging Ion-Cyclotron-Resonance technique, which projects the radial motions of ions in the Penning trap (JYFLTRAP) onto a position-sensitive micro-channel plate detector, has been applied. To obtain the yield ratio, that is the relative population of two states of an isomer pair, a novel analysis procedure has been developed to determine the number of detected ions in each state, as well as corrections for the detector efficiency and decay losses. In order to determine the population of the states in cases where their mass difference is too small to reach full separation, a Bayesian Gaussian Mixture model was implemented. The position-dependent efficiency of the micro-channel plate detector was calibrated by mapping it with 133 Cs+ ions, and a Gaussian Process was trained with the position data to construct an efficiency function that could be used to correct the recorded distributions. The obtained numbers of counts of excited and ground-state ions were used to derive the isomeric yield ratio, taking into account decay losses as well as feeding from precursors.
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Affiliation(s)
- Z. Gao
- Department of Physics and Astronomy, Uppsala University, BOX 516, 75120 Uppsala, Sweden
| | - A. Solders
- Department of Physics and Astronomy, Uppsala University, BOX 516, 75120 Uppsala, Sweden
| | - A. Al-Adili
- Department of Physics and Astronomy, Uppsala University, BOX 516, 75120 Uppsala, Sweden
| | - O. Beliuskina
- Department of Physics, Accelerator laboratory, University of Jyväskylä, P.O. Box 35(YFL), 40014 Jyväskylä, Finland
| | - T. Eronen
- Department of Physics, Accelerator laboratory, University of Jyväskylä, P.O. Box 35(YFL), 40014 Jyväskylä, Finland
| | - A. Kankainen
- Department of Physics, Accelerator laboratory, University of Jyväskylä, P.O. Box 35(YFL), 40014 Jyväskylä, Finland
| | - M. Lantz
- Department of Physics and Astronomy, Uppsala University, BOX 516, 75120 Uppsala, Sweden
| | - I. D. Moore
- Department of Physics, Accelerator laboratory, University of Jyväskylä, P.O. Box 35(YFL), 40014 Jyväskylä, Finland
| | - D. A. Nesterenko
- Department of Physics, Accelerator laboratory, University of Jyväskylä, P.O. Box 35(YFL), 40014 Jyväskylä, Finland
| | - H. Penttilä
- Department of Physics, Accelerator laboratory, University of Jyväskylä, P.O. Box 35(YFL), 40014 Jyväskylä, Finland
| | - S. Pomp
- Department of Physics and Astronomy, Uppsala University, BOX 516, 75120 Uppsala, Sweden
| | - H. Sjöstrand
- Department of Physics and Astronomy, Uppsala University, BOX 516, 75120 Uppsala, Sweden
| | - the IGISOL team
- Department of Physics, Accelerator laboratory, University of Jyväskylä, P.O. Box 35(YFL), 40014 Jyväskylä, Finland
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Ge Z, Eronen T, Tyrin KS, Kotila J, Kostensalo J, Nesterenko DA, Beliuskina O, de Groote R, de Roubin A, Geldhof S, Gins W, Hukkanen M, Jokinen A, Kankainen A, Koszorús Á, Krivoruchenko MI, Kujanpää S, Moore ID, Raggio A, Rinta-Antila S, Suhonen J, Virtanen V, Weaver AP, Zadvornaya A. ^{159}Dy Electron-Capture: A New Candidate for Neutrino Mass Determination. Phys Rev Lett 2021; 127:272301. [PMID: 35061421 DOI: 10.1103/physrevlett.127.272301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 09/22/2021] [Accepted: 11/30/2021] [Indexed: 06/14/2023]
Abstract
The ground state to ground state electron-capture Q value of ^{159}Dy (3/2^{-}) has been measured directly using the double Penning trap mass spectrometer JYFLTRAP. A value of 364.73(19) keV was obtained from a measurement of the cyclotron frequency ratio of the decay parent ^{159}Dy and the decay daughter ^{159}Tb ions using the novel phase-imaging ion-cyclotron resonance technique. The Q values for allowed Gamow-Teller transition to 5/2^{-} and the third-forbidden unique transition to 11/2^{+} state with excitation energies of 363.5449(14) keV and 362.050(40) keV in ^{159}Tb were determined to be 1.18(19) keV and 2.68(19) keV, respectively. The high-precision Q value of transition 3/2^{-}→5/2^{-} from this work, revealing itself as the lowest electron-capture Q value, is used to unambiguously characterize all the possible lines that are present in its electron-capture spectrum. We performed atomic many-body calculations for both transitions to determine electron-capture probabilities from various atomic orbitals and found an order of magnitude enhancement in the event rates near the end point of energy spectrum in the transition to the 5/2^{-} nuclear excited state, which can become very interesting once the experimental challenges of identifying decays into excited states are overcome. The transition to the 11/2^{+} state is strongly suppressed and found unsuitable for measuring the neutrino mass. These results show that the electron-capture in the ^{159}Dy atom, going to the 5/2^{-} state of the ^{159}Tb nucleus, is a new candidate that may open the way to determine the electron-neutrino mass in the sub-eV region by studying electron-capture. Further experimental feasibility studies, including coincidence measurements with realistic detectors, will be of great interest.
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Affiliation(s)
- Z Ge
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - T Eronen
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - K S Tyrin
- National Research Centre "Kurchatov Institute," Ploschad' Akademika Kurchatova 1, 123182 Moscow, Russia
| | - J Kotila
- Finnish Institute for Educational Research, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
- Center for Theoretical Physics, Sloane Physics Laboratory Yale University, New Haven, Connecticut 06520-8120, USA
| | - J Kostensalo
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - D A Nesterenko
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - O Beliuskina
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - R de Groote
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - A de Roubin
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, UMR 5797 CNRS/IN2P3-Université de Bordeaux, 19 Chemin du Solarium, CS 10120, F-33175 Gradignan Cedex, France
| | - S Geldhof
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - W Gins
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - M Hukkanen
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
- Centre d'Etudes Nucléaires de Bordeaux Gradignan, UMR 5797 CNRS/IN2P3-Université de Bordeaux, 19 Chemin du Solarium, CS 10120, F-33175 Gradignan Cedex, France
| | - A Jokinen
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - A Kankainen
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - Á Koszorús
- Department of Physics, University of Liverpool, Liverpool L69 7ZE, United Kingdom
| | - M I Krivoruchenko
- National Research Centre "Kurchatov Institute," Ploschad' Akademika Kurchatova 1, 123182 Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," B. Cheremushkinskaya 25, 117218 Moscow, Russia
| | - S Kujanpää
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - I D Moore
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - A Raggio
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - S Rinta-Antila
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - J Suhonen
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - V Virtanen
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - A P Weaver
- School of Computing, Engineering and Mathematics, University of Brighton, Brighton BN2 4JG, United Kingdom
| | - A Zadvornaya
- Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
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de Roubin A, Kostensalo J, Eronen T, Canete L, de Groote RP, Jokinen A, Kankainen A, Nesterenko DA, Moore ID, Rinta-Antila S, Suhonen J, Vilén M. High-Precision Q-Value Measurement Confirms the Potential of ^{135}Cs for Absolute Antineutrino Mass Scale Determination. Phys Rev Lett 2020; 124:222503. [PMID: 32567932 DOI: 10.1103/physrevlett.124.222503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 04/10/2020] [Accepted: 05/07/2020] [Indexed: 06/11/2023]
Abstract
The ground-state-to-ground-state β-decay Q value of ^{135}Cs(7/2^{+})→^{135}Ba(3/2^{+}) has been directly measured for the first time. The measurement was done utilizing both the phase-imaging ion-cyclotron resonance technique and the time-of-flight ion-cyclotron resonance technique at the JYFLTRAP Penning-trap setup and yielded a mass difference of 268.66(30) keV between ^{135}Cs(7/2^{+}) and ^{135}Ba(3/2^{+}). With this very small uncertainty, this measurement is a factor of 3 more precise than the currently adopted Q value in the Atomic Mass Evaluation 2016. The measurement confirms that the first-forbidden unique β^{-}-decay transition ^{135}Cs(7/2^{+})→^{135}Ba(11/2^{-}) is a candidate for antineutrino mass measurements with an ultralow Q value of 0.44(31) keV. This Q value is almost an order of magnitude smaller than those of nuclides presently used in running or planned direct (anti)neutrino mass experiment.
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Affiliation(s)
- A de Roubin
- University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - J Kostensalo
- University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - T Eronen
- University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - L Canete
- University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - R P de Groote
- University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - A Jokinen
- University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - A Kankainen
- University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - D A Nesterenko
- University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - I D Moore
- University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - S Rinta-Antila
- University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - J Suhonen
- University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
| | - M Vilén
- University of Jyväskylä, P.O. Box 35, FI-40014 Jyväskylä, Finland
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Vilen M, Kelly JM, Kankainen A, Brodeur M, Aprahamian A, Canete L, Eronen T, Jokinen A, Kuta T, Moore ID, Mumpower MR, Nesterenko DA, Penttilä H, Pohjalainen I, Porter WS, Rinta-Antila S, Surman R, Voss A, Äystö J. Erratum: Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP: Reduced Neutron Pairing and Implications for r-Process Calculations [Phys. Rev. Lett. 120, 262701 (2018)]. Phys Rev Lett 2020; 124:129901. [PMID: 32281843 DOI: 10.1103/physrevlett.124.129901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 09/03/2019] [Indexed: 06/11/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.120.262701.
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Vilen M, Kelly JM, Kankainen A, Brodeur M, Aprahamian A, Canete L, Eronen T, Jokinen A, Kuta T, Moore ID, Mumpower MR, Nesterenko DA, Penttilä H, Pohjalainen I, Porter WS, Rinta-Antila S, Surman R, Voss A, Äystö J. Precision Mass Measurements on Neutron-Rich Rare-Earth Isotopes at JYFLTRAP: Reduced Neutron Pairing and Implications for r-Process Calculations. Phys Rev Lett 2018; 120:262701. [PMID: 30004755 DOI: 10.1103/physrevlett.120.262701] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 02/17/2018] [Indexed: 06/08/2023]
Abstract
The rare-earth peak in the r-process abundance pattern depends sensitively on both the astrophysical conditions and subtle changes in nuclear structure in the region. This work takes an important step towards elucidating the nuclear structure and reducing the uncertainties in r-process calculations via precise atomic mass measurements at the JYFLTRAP double Penning trap. ^{158}Nd, ^{160}Pm, ^{162}Sm, and ^{164-166}Gd have been measured for the first time, and the precisions for ^{156}Nd, ^{158}Pm, ^{162,163}Eu, ^{163}Gd, and ^{164}Tb have been improved considerably. Nuclear structure has been probed via two-neutron separation energies S_{2n} and neutron pairing energy metrics D_{n}. The data do not support the existence of a subshell closure at N=100. Neutron pairing has been found to be weaker than predicted by theoretical mass models. The impact on the calculated r-process abundances has been studied. Substantial changes resulting in a smoother abundance distribution and a better agreement with the solar r-process abundances are observed.
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Affiliation(s)
- M Vilen
- University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - J M Kelly
- University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - A Kankainen
- University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - M Brodeur
- University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - A Aprahamian
- University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - L Canete
- University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - T Eronen
- University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - A Jokinen
- University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - T Kuta
- University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - I D Moore
- University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - M R Mumpower
- University of Notre Dame, Notre Dame, Indiana 46556, USA
- Theory Division, Los Alamos National Lab, Los Alamos, New Mexico 87544, USA
| | - D A Nesterenko
- University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - H Penttilä
- University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - I Pohjalainen
- University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - W S Porter
- University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - S Rinta-Antila
- University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - R Surman
- University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - A Voss
- University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
| | - J Äystö
- University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland
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Alanssari M, Frekers D, Eronen T, Canete L, Dilling J, Haaranen M, Hakala J, Holl M, Ješkovský M, Jokinen A, Kankainen A, Koponen J, Mayer AJ, Moore ID, Nesterenko DA, Pohjalainen I, Povinec P, Reinikainen J, Rinta-Antila S, Srivastava PC, Suhonen J, Thompson RI, Voss A, Wieser ME. Single and Double Beta-Decay Q Values among the Triplet ^{96}Zr, ^{96}Nb, and ^{96}Mo. Phys Rev Lett 2016; 116:072501. [PMID: 26943530 DOI: 10.1103/physrevlett.116.072501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2015] [Indexed: 06/05/2023]
Abstract
The atomic mass relations among the mass triplet ^{96}Zr, ^{96}Nb, and ^{96}Mo have been determined by means of high-precision mass measurements using the JYFLTRAP mass spectrometer at the IGISOL facility of the University of Jyväskylä. We report Q values for the ^{96}Zr single and double β decays to ^{96}Nb and ^{96}Mo, as well as the Q value for the ^{96}Nb single β decay to ^{96}Mo, which are Q_{β}(^{96}Zr)=163.96(13), Q_{ββ}(^{96}Zr)=3356.097(86), and Q_{β}(^{96}Nb)=3192.05(16) keV. Of special importance is the ^{96}Zr single β-decay Q value, which has never been determined directly. The single β decay, whose main branch is fourfold unique forbidden, is an alternative decay path to the ^{96}Zr ββ decay, and its observation can provide one of the most direct tests of the neutrinoless ββ-decay nuclear-matrix-element calculations, as these can be simultaneously performed for both decay paths with no further assumptions. The theoretical single β-decay rate has been re-evaluated using a shell-model approach, which indicates a ^{96}Zr single β-decay lifetime within reach of an experimental verification. The uniqueness of the decay also makes such an experiment interesting for an investigation into the origin of the quenching of the axial-vector coupling constant g_{A}.
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Affiliation(s)
- M Alanssari
- Institut für Kernphysik, Westfälische Wilhelms-Universität, D-48149 Münster, Germany
| | - D Frekers
- Institut für Kernphysik, Westfälische Wilhelms-Universität, D-48149 Münster, Germany
| | - T Eronen
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - L Canete
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - J Dilling
- TRIUMF, Vancouver, British Columbia V6T 2A3, Canada
| | - M Haaranen
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - J Hakala
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - M Holl
- Institut für Kernphysik, Westfälische Wilhelms-Universität, D-48149 Münster, Germany
| | - M Ješkovský
- Faculty of Mathematics, Physics and Informatics, Comenius University, SK-84248 Bratislava, Slovak Republic
| | - A Jokinen
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - A Kankainen
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - J Koponen
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - A J Mayer
- Department of Physics and Astronomy, University of Calgary, Calgary AB T2N 1N4, Canada
| | - I D Moore
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - D A Nesterenko
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - I Pohjalainen
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - P Povinec
- Faculty of Mathematics, Physics and Informatics, Comenius University, SK-84248 Bratislava, Slovak Republic
| | - J Reinikainen
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - S Rinta-Antila
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - P C Srivastava
- Department of Physics, Indian Institute of Technology, Roorkee 247667, India
| | - J Suhonen
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - R I Thompson
- Department of Physics and Astronomy, University of Calgary, Calgary AB T2N 1N4, Canada
| | - A Voss
- Department of Physics, University of Jyvaskyla, Jyvaskyla FI-40014, Finland
| | - M E Wieser
- Department of Physics and Astronomy, University of Calgary, Calgary AB T2N 1N4, Canada
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Gusev YI, Gusel’nikov VS, Eliseev SA, Koneva TV, Nesterenko DA, Novikov YN, Popov AV, Smirnov MV, Filyanin PE, Chenmarev SV. Penning Ion Traps for High-Precision Measurements of the Mass of Neutron-Excess Nuclei in the Pik Reactor. ATOM ENERGY+ 2015. [DOI: 10.1007/s10512-015-0017-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Nesterenko DA, Garanin VA, Kazakov AI, Korepin AG, Romanova LB. Energetic properties and impact sensitivity of crystalline explosives. Russ J Phys Chem B 2014. [DOI: 10.1134/s1990793114050200] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Eliseev S, Blaum K, Block M, Droese C, Goncharov M, Minaya Ramirez E, Nesterenko DA, Novikov YN, Schweikhard L. Phase-imaging ion-cyclotron-resonance measurements for short-lived nuclides. Phys Rev Lett 2013; 110:082501. [PMID: 23473137 DOI: 10.1103/physrevlett.110.082501] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2012] [Indexed: 06/01/2023]
Abstract
A novel approach based on the projection of the Penning-trap ion motion onto a position-sensitive detector opens the door to very accurate mass measurements on the ppb level even for short-lived nuclides with half-lives well below a second. In addition to the accuracy boost, the new method provides a superior resolving power by which low-lying isomeric states with excitation energy on the 10-keV level can be easily separated from the ground state. A measurement of the mass difference of ^{130}Xe and ^{129}Xe has demonstrated the great potential of the new approach.
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Affiliation(s)
- S Eliseev
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
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Pisarenko OI, Serebriakova LI, Tskitishvili OV, Nesterenko DA, Eremenko LT, Kosilko VP, Garanin VA. [The study of vasodilative and antiischemic function of nicorandil in regional ischemia and reperfusion of rat heart in vivo]. Kardiologiia 2008; 48:36-40. [PMID: 18537801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Aim of the work was to study effect of nicorandil [N-(2-nitrooxiethyl) nicotinamide, SG75] on blood pressure (BP), heart rate (HR) and rhythm disturbances during regional ischemia and reperfusion of the heart in rats in vivo and its ability to limit acute myocardial infarction (MI). Nicorandil was obtained by nitrating nicotinamide ethanol using produced by industry ethylnicotinate. MI in Wistar rats was modeled by 40-min occlusion of anterior descending coronary artery (ADCA) and subsequent 60-min reperfusion. Nicorandil (3,2 mmol/kg) was administered intravenously before occlusion. Nitroglycerine was used as preparation of comparison; it was administered in the same dose. MI area and zone at risk (ZR) were measured by computer planimetry after staining of left ventricular sections with 2, 3, 5-triphenyltetrazolium chloride. Lowering of mean BP under influence of nicorandil during ADCA occlusion and subsequent reperfusion were deeper and longer than under influence of nitroglycerine. Contrary to nitroglycerine administration of nicorandil did not cause decrease of HR. Administration of both drugs postponed origination of rhythm disturbances during ischemia but did not affect their duration. MI dimension assessed by MI/ZR ratio after administration of nicorandil and nitroglycerine was significantly lowered down to 22 +/- 4 and 32 +/- 3%, respectively, compared with 47 +/- 3% in control. The results obtained evidence that in this model of ischemic and reperfusion damage of the heart vasodilating properties of nicorandil combined with decrease of postischemic loss of cardiomyocytes in ZR are comparable with effects of nitroglycerine.
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Maveev VG, Nazina LD, Nazin GM, Nesterenko DA, Eremenko LT. Decomposition of aliphatic α-fluorodinitro compounds in the liquid phase. Russ Chem Bull 1998. [DOI: 10.1007/bf02641537] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Eremenko LT, Romanova LB, Ivanova ME, Nesterenko DA, Malygina VS, Ermeev AB, Lagodzinskaya GV, Lodygina VP. Cubane derivatives. Russ Chem Bull 1998. [DOI: 10.1007/bf02503486] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Eremenko IL, Golubnichaya MA, Nefedov SE, Sidorov AA, Nesterenko DA, Konovalova NP, Volkova LM, Eremenko LT. Synthesis, structure, and antimetastatic activity of thetrans-[Pt(NC5H4C(O)NHC2H4ONO2)2Cl2] complex. Russ Chem Bull 1997. [DOI: 10.1007/bf02502947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Eremenko LT, Nesterenko DA. Relationship between brisance of explosives and their molecular-atomic structures. Propellants Explos Pyrotech 1989. [DOI: 10.1002/prep.19890140502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Zhitomirskaya NG, Nesterenko DA, Eremenko LT. Infrared spectra of monofluoropolynitroalkylnitramines. Russ Chem Bull 1973. [DOI: 10.1007/bf00926410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Eremenko LT, Nesterenko DA, Natsibullina NS. N-(2-fluoro-2, 2-dinitroethyl)-N-nitroamino alcohols and some of their derivatives. Russ Chem Bull 1970. [DOI: 10.1007/bf00852670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Eremenko LT, Gafurov RG, Korepin AG, Nesterenko DA, Natsibullina NS. Fluorination of the bipolar ion of 3,3-dinitro-1-aminopropane with elementary fluorine. Russ Chem Bull 1969. [DOI: 10.1007/bf00906432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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