1
|
Adamczak A, Antognini A, Berger N, Cocolios TE, Deokar N, Düllmann CE, Eggenberger A, Eichler R, Heines M, Hess H, Indelicato P, Kirch K, Knecht A, Krauth JJ, Nuber J, Ouf A, Papa A, Pohl R, Rapisarda E, Reiter P, Ritjoho N, Roccia S, Seidlitz M, Severijns N, von Schoeler K, Skawran A, Vogiatzi SM, Warr N, Wauters F. Muonic atom spectroscopy with microgram target material. Eur Phys J A Hadron Nucl 2023; 59:15. [PMID: 36751673 PMCID: PMC9898421 DOI: 10.1140/epja/s10050-023-00930-y] [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: 09/28/2022] [Accepted: 01/25/2023] [Indexed: 06/18/2023]
Abstract
Muonic atom spectroscopy-the measurement of the x rays emitted during the formation process of a muonic atom-has a long standing history in probing the shape and size of nuclei. In fact, almost all stable elements have been subject to muonic atom spectroscopy measurements and the absolute charge radii extracted from these measurements typically offer the highest accuracy available. However, so far only targets of at least a few hundred milligram could be used as it required to stop a muon beam directly in the target to form the muonic atom. We have developed a new method relying on repeated transfer reactions taking place inside a 100 bar hydrogen gas cell with an admixture of 0.25% deuterium that allows us to drastically reduce the amount of target material needed while still offering an adequate efficiency. Detailed simulations of the transfer reactions match the measured data, suggesting good understanding of the processes taking place inside the gas mixture. As a proof of principle we demonstrate the method with a measurement of the 2p-1s muonic x rays from a 5 μ g gold target.
Collapse
Affiliation(s)
- A. Adamczak
- Institute of Nuclear Physics, Polish Academy of Sciences, Krakow, Poland
| | - A. Antognini
- Paul Scherrer Institut, Villigen, Switzerland
- Institut für Teilchen- und Astrophysik, ETH Zürich, Zürich, Switzerland
| | - N. Berger
- Institute of Nuclear Physics, Johannes Gutenberg University Mainz, Mainz, Germany
- PRISMA+ Cluster of Excellence, Johannes Gutenberg University Mainz, Mainz, Germany
| | - T. E. Cocolios
- Instituut voor Kern- en Stralingfysica, KU Leuven, Leuven, Belgium
| | - N. Deokar
- Institute of Nuclear Physics, Johannes Gutenberg University Mainz, Mainz, Germany
- PRISMA+ Cluster of Excellence, Johannes Gutenberg University Mainz, Mainz, Germany
| | - Ch. E. Düllmann
- PRISMA+ Cluster of Excellence, Johannes Gutenberg University Mainz, Mainz, Germany
- Department of Chemistry-TRIGA Site, Johannes Gutenberg University Mainz, Mainz, Germany
- GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt, Germany
- Helmholtz Institute Mainz, Mainz, Germany
| | - A. Eggenberger
- Institut für Teilchen- und Astrophysik, ETH Zürich, Zürich, Switzerland
| | - R. Eichler
- Paul Scherrer Institut, Villigen, Switzerland
| | - M. Heines
- Instituut voor Kern- en Stralingfysica, KU Leuven, Leuven, Belgium
| | - H. Hess
- Institut für Kernphysik, Universität zu Köln, Köln, Germany
| | - P. Indelicato
- Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-PSL Research University, Collège de France, Case 74; 4, place Jussieu, 75005 Paris, France
| | - K. Kirch
- Paul Scherrer Institut, Villigen, Switzerland
- Institut für Teilchen- und Astrophysik, ETH Zürich, Zürich, Switzerland
| | - A. Knecht
- Paul Scherrer Institut, Villigen, Switzerland
| | - J. J. Krauth
- PRISMA+ Cluster of Excellence, Johannes Gutenberg University Mainz, Mainz, Germany
- Institute of Physics, Johannes Gutenberg Universität Mainz, Mainz, Germany
| | - J. Nuber
- Paul Scherrer Institut, Villigen, Switzerland
- Institut für Teilchen- und Astrophysik, ETH Zürich, Zürich, Switzerland
| | - A. Ouf
- Institute of Physics, Johannes Gutenberg Universität Mainz, Mainz, Germany
| | - A. Papa
- Paul Scherrer Institut, Villigen, Switzerland
- Department of Physics, Universitá di Pisa, Pisa, Italy
| | - R. Pohl
- PRISMA+ Cluster of Excellence, Johannes Gutenberg University Mainz, Mainz, Germany
- Institute of Physics, Johannes Gutenberg Universität Mainz, Mainz, Germany
| | | | - P. Reiter
- Institut für Kernphysik, Universität zu Köln, Köln, Germany
| | - N. Ritjoho
- Paul Scherrer Institut, Villigen, Switzerland
- Institut für Teilchen- und Astrophysik, ETH Zürich, Zürich, Switzerland
| | - S. Roccia
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - M. Seidlitz
- Institut für Kernphysik, Universität zu Köln, Köln, Germany
| | - N. Severijns
- Instituut voor Kern- en Stralingfysica, KU Leuven, Leuven, Belgium
| | - K. von Schoeler
- Institut für Teilchen- und Astrophysik, ETH Zürich, Zürich, Switzerland
| | - A. Skawran
- Paul Scherrer Institut, Villigen, Switzerland
- Institut für Teilchen- und Astrophysik, ETH Zürich, Zürich, Switzerland
| | - S. M. Vogiatzi
- Paul Scherrer Institut, Villigen, Switzerland
- Institut für Teilchen- und Astrophysik, ETH Zürich, Zürich, Switzerland
| | - N. Warr
- Institut für Kernphysik, Universität zu Köln, Köln, Germany
| | - F. Wauters
- Institute of Nuclear Physics, Johannes Gutenberg University Mainz, Mainz, Germany
- PRISMA+ Cluster of Excellence, Johannes Gutenberg University Mainz, Mainz, Germany
| |
Collapse
|
2
|
Aramini M, Milanese C, Hillier AD, Girella A, Horstmann C, Klassen T, Ishida K, Dornheim M, Pistidda C. Using the Emission of Muonic X-rays as a Spectroscopic Tool for the Investigation of the Local Chemistry of Elements. Nanomaterials (Basel) 2020; 10:E1260. [PMID: 32605232 PMCID: PMC7408306 DOI: 10.3390/nano10071260] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 06/15/2020] [Accepted: 06/25/2020] [Indexed: 11/17/2022]
Abstract
There are several techniques providing quantitative elemental analysis, but very few capable of identifying both the concentration and chemical state of elements. This study presents a systematic investigation of the properties of the X-rays emitted after the atomic capture of negatively charged muons. The probability rates of the muonic transitions possess sensitivity to the electronic structure of materials, thus making the muonic X-ray Emission Spectroscopy complementary to the X-ray Absorption and Emission techniques for the study of the chemistry of elements, and able of unparalleled analysis in case of elements bearing low atomic numbers. This qualitative method is applied to the characterization of light elements-based, energy-relevant materials involved in the reaction of hydrogen desorption from the reactive hydride composite Ca(BH4)2-Mg2NiH4. The origin of the influence of the band-structure on the muonic atom is discussed and the observed effects are attributed to the contribution of the electronic structure to the screening and to the momentum distribution in the muon cascade.
Collapse
Affiliation(s)
- Matteo Aramini
- UKRI Rutherford Appleton Laboratory, ISIS Pulsed Neutron and Muon Facility, Didcot OX11 0QX, UK; (M.A.); (A.D.H.); (K.I.)
| | - Chiara Milanese
- Pavia Hydrogen Lab, Chemistry Department, Physical Chemistry Section, C.S.G.I. and Pavia University, Viale Taramelli, 16, 27100 Pavia, Italy;
| | - Adrian D. Hillier
- UKRI Rutherford Appleton Laboratory, ISIS Pulsed Neutron and Muon Facility, Didcot OX11 0QX, UK; (M.A.); (A.D.H.); (K.I.)
| | - Alessandro Girella
- Pavia Hydrogen Lab, Chemistry Department, Physical Chemistry Section, C.S.G.I. and Pavia University, Viale Taramelli, 16, 27100 Pavia, Italy;
| | - Christian Horstmann
- Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht GmbH, Max-Planck-Straße 1, 21502 Geesthacht, Germany; (C.H.); (T.K.); (M.D.)
| | - Thomas Klassen
- Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht GmbH, Max-Planck-Straße 1, 21502 Geesthacht, Germany; (C.H.); (T.K.); (M.D.)
- Institute of Materials Technology, Helmut Schmidt University, Holstenhofweg 85, 22043 Hamburg, Germany
| | - Katsuo Ishida
- UKRI Rutherford Appleton Laboratory, ISIS Pulsed Neutron and Muon Facility, Didcot OX11 0QX, UK; (M.A.); (A.D.H.); (K.I.)
- RIKEN Nishina Center, RIKEN, Nishina Bldg., 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Martin Dornheim
- Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht GmbH, Max-Planck-Straße 1, 21502 Geesthacht, Germany; (C.H.); (T.K.); (M.D.)
| | - Claudio Pistidda
- Institute of Materials Research, Materials Technology, Helmholtz-Zentrum Geesthacht GmbH, Max-Planck-Straße 1, 21502 Geesthacht, Germany; (C.H.); (T.K.); (M.D.)
| |
Collapse
|