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Harkema N, Cariker C, Lindroth E, Argenti L, Sandhu A. Autoionizing Polaritons in Attosecond Atomic Ionization. Phys Rev Lett 2021; 127:023202. [PMID: 34296926 DOI: 10.1103/physrevlett.127.023202] [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: 11/29/2020] [Revised: 03/25/2021] [Accepted: 06/14/2021] [Indexed: 06/13/2023]
Abstract
Light-induced states and Autler-Townes splitting of laser-coupled states are common features in the photoionization spectra of laser-dressed atoms. The entangled light-matter character of metastable Autler-Townes multiplets, which makes them autoionizing polaritons, however, is still largely unexplored. We employ attosecond transient-absorption spectroscopy in argon to study the formation of polariton multiplets between the 3s^{-1}4p and several light-induced states. We measure a controllable stabilization of the polaritons against ionization, in excellent agreement with ab initio theory. Using an extension of the Jaynes-Cummings model to autoionizing states, we show that this stabilization is due to the destructive interference between the Auger decay and the radiative ionization of the polaritonic components. These results give new insights into the optical control of electronic structure in the continuum and unlock the door to applications of radiative stabilization in metastable polyelectronic systems.
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Affiliation(s)
- N Harkema
- Department of Physics, University of Arizona, Tucson, Arizona 85721, USA
| | - C Cariker
- Department of Physics, University of Central Florida, Orlando, Florida 32816, USA
| | - E Lindroth
- Department of Physics, Stockholm University, Stockholm SE-106 91, Sweden
| | - L Argenti
- Department of Physics, University of Central Florida, Orlando, Florida 32816, USA
- CREOL, University of Central Florida, Orlando, Florida 32816, USA
| | - A Sandhu
- Department of Physics, University of Arizona, Tucson, Arizona 85721, USA
- College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA
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Sabbar M, Heuser S, Boge R, Lucchini M, Carette T, Lindroth E, Gallmann L, Cirelli C, Keller U. Erratum: Resonance Effects in Photoemission Time Delays [Phys. Rev. Lett. 115, 133001 (2015)]. Phys Rev Lett 2017; 119:219901. [PMID: 29219399 DOI: 10.1103/physrevlett.119.219901] [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: 08/15/2017] [Indexed: 06/07/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.115.133001.
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Abstract
Spin-orbit mediated phonon relaxation in a two-dimensional quantum dot is investigated using different confining potentials. Elliptical harmonic oscillator and cylindrical well results are compared to each other in the case of a two-electron GaAs quantum dot subjected to a tilted magnetic field. The lowest energy set of two-body singlet and triplet states are calculated including spin-orbit and magnetic effects. These are used to calculate the phonon induced transition rate from the excited triplet to the ground state singlet for magnetic fields up to where the states cross. The roll of the cubic Dresselhaus effect, which is found to be much more important than previously assumed, and the positioning of 'spin hot-spots' are discussed and relaxation rates for a few different systems are exhibited.
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Affiliation(s)
- C J Wesslén
- Department of Physics, Stockholm University, AlbaNova, S-106 91 Stockholm, Sweden
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Isinger M, Squibb RJ, Busto D, Zhong S, Harth A, Kroon D, Nandi S, Arnold CL, Miranda M, Dahlström JM, Lindroth E, Feifel R, Gisselbrecht M, L’Huillier A. Photoionization in the time and frequency domain. Science 2017; 358:893-896. [DOI: 10.1126/science.aao7043] [Citation(s) in RCA: 141] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Accepted: 10/19/2017] [Indexed: 11/02/2022]
Abstract
Ultrafast processes in matter, such as the electron emission after light absorption, can now be studied using ultrashort light pulses of attosecond duration (10−18 seconds) in the extreme ultraviolet spectral range. The lack of spectral resolution due to the use of short light pulses has raised issues in the interpretation of the experimental results and the comparison with theoretical calculations. We determine photoionization time delays in neon atoms over a 40–electron volt energy range with an interferometric technique combining high temporal and spectral resolution. We spectrally disentangle direct ionization from ionization with shake-up, in which a second electron is left in an excited state, and obtain excellent agreement with theoretical calculations, thereby solving a puzzle raised by 7-year-old measurements.
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Affiliation(s)
- M. Isinger
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - R. J. Squibb
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-41 296 Göteborg, Sweden
| | - D. Busto
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - S. Zhong
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - A. Harth
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - D. Kroon
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - S. Nandi
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - C. L. Arnold
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - M. Miranda
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - J. M. Dahlström
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
- Department of Physics, Stockholm University, SE-106 91 Stockholm, Sweden
| | - E. Lindroth
- Department of Physics, Stockholm University, SE-106 91 Stockholm, Sweden
| | - R. Feifel
- Department of Physics, University of Gothenburg, Origovägen 6B, SE-41 296 Göteborg, Sweden
| | - M. Gisselbrecht
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
| | - A. L’Huillier
- Department of Physics, Lund University, P.O. Box 118, SE-22 100 Lund, Sweden
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Sabbar M, Heuser S, Boge R, Lucchini M, Carette T, Lindroth E, Gallmann L, Cirelli C, Keller U. Resonance Effects in Photoemission Time Delays. Phys Rev Lett 2015; 115:133001. [PMID: 26451550 DOI: 10.1103/physrevlett.115.133001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Indexed: 06/05/2023]
Abstract
We present measurements of single-photon ionization time delays between the outermost valence electrons of argon and neon using a coincidence detection technique that allows for the simultaneous measurement of both species under identical conditions. The analysis of the measured traces reveals energy-dependent time delays of a few tens of attoseconds with high energy resolution. In contrast to photoelectrons ejected through tunneling, single-photon ionization can be well described in the framework of Wigner time delays. Accordingly, the overall trend of our data is reproduced by recent Wigner time delay calculations. However, besides the general trend we observe resonance features occurring at specific photon energies. These features have been qualitatively reproduced and identified by a calculation using the multiconfigurational Hartree-Fock method, including the influence of doubly excited states and ionization thresholds.
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Affiliation(s)
- M Sabbar
- Physics Department, ETH Zurich, 8093 Zurich, Switzerland
| | - S Heuser
- Physics Department, ETH Zurich, 8093 Zurich, Switzerland
| | - R Boge
- Physics Department, ETH Zurich, 8093 Zurich, Switzerland
| | - M Lucchini
- Physics Department, ETH Zurich, 8093 Zurich, Switzerland
| | - T Carette
- Laboratoire de Chimie Quantique et Photophysique, CP160/09, Université Libre de Bruxelles, B 1050 Brussels, Belgium
- Physics Department, Stockholm University, AlbaNova University Center, SE-106 91 Stockholm, Sweden
| | - E Lindroth
- Physics Department, Stockholm University, AlbaNova University Center, SE-106 91 Stockholm, Sweden
| | - L Gallmann
- Physics Department, ETH Zurich, 8093 Zurich, Switzerland
- Institute of Applied Physics, University of Bern, 3012 Bern, Switzerland
| | - C Cirelli
- Physics Department, ETH Zurich, 8093 Zurich, Switzerland
| | - U Keller
- Physics Department, ETH Zurich, 8093 Zurich, Switzerland
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Lindroth E, Clark TL. Phylogenetic analysis of an economically important species complex of wireworms (Coleoptera: Elateridae) in the midwest. J Econ Entomol 2009; 102:743-749. [PMID: 19449656 DOI: 10.1603/029.102.0235] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Wireworms are a common soil-dwelling pest of maize, Zea mays L., in the midwestern United States. Wireworms are a problematic group to control and study due to the difficulty involved in identification. The objectives of this study are to identify this species complex of wireworms by using molecular diagnostic techniques and to reconstruct a phylogeny of economically important wireworm species. The cytochrome oxidase I gene of mitochondrial DNA was sequenced from > 300 individuals. The species analyzed include all economically important members of the genus Melanotus Eschscholtz as well as Conoderus lividus (De Geer). The species that are indistinguishable in the larval stage were successfully separated using nucleotide p-distances, and sequence data were then used in phylogenetic analyses. The data presented here represent an initial phylogenetic hypothesis concerning economically important wireworms. Our results indicate that the molecular phylogeny of the mitochondrial cytochrome oxidase subunit I gene provides a fast and accurate method of separating wireworm species. By increasing the ease and accuracy of identification, we hope to facilitate further investigations into their biology and control.
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Affiliation(s)
- E Lindroth
- Department of Entomology, 212 Entomology Hall, Lincoln, NE 68583, USA.
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Lestinsky M, Lindroth E, Orlov DA, Schmidt EW, Schippers S, Böhm S, Brandau C, Sprenger F, Terekhov AS, Müller A, Wolf A. Screened radiative corrections from hyperfine-split dielectronic resonances in lithiumlike scandium. Phys Rev Lett 2008; 100:033001. [PMID: 18232975 DOI: 10.1103/physrevlett.100.033001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2007] [Indexed: 05/25/2023]
Abstract
Term energies for dielectronic-recombination Rydberg resonances below 0.07 eV are determined for Sc18+ with absolute accuracies below 0.0002 eV by electron collision spectroscopy in an ion storage ring, using the twin-electron-beam technique and a cryogenic photocathode. The lithiumlike 2s_{1/2}-2p_{3/2} transition energy for Z=21 is determined to 4.6 ppm, less than 1% of the few-body effects on radiative corrections. Features from the hyperfine structure of the 2s state could be resolved in the dielectronic-recombination spectrum.
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Affiliation(s)
- M Lestinsky
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
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Schuch R, Lindroth E, Madzunkov S, Fogle M, Mohamed T, Indelicato P. Dielectronic resonance method for measuring isotope shifts. Phys Rev Lett 2005; 95:183003. [PMID: 16383901 DOI: 10.1103/physrevlett.95.183003] [Citation(s) in RCA: 2] [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: 02/28/2005] [Indexed: 05/05/2023]
Abstract
Long standing problems in the comparison of very accurate hyperfine-shift measurements to theory were partly overcome by precise measurements on few-electron highly charged ions. Still the agreement between theory and experiment is unsatisfactory. In this Letter, we present a radically new way of precisely measuring hyperfine shifts, and demonstrate its effectiveness in the case of the hyperfine shift of 4s1/2 and 4p1/2 in 207Pb53+. It is based on the precise detection of dielectronic resonances that occur in electron-ion recombination at very low energy. This allows us to determine the hyperfine constant to around 0.6 meV accuracy which is on the order of 10%.
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Affiliation(s)
- R Schuch
- Atomic Physics, Stockholm University, AlbaNova, S-106 91 Stockholm, Sweden
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Indelicato P, Lindroth E, Desclaux JP. Nonrelativistic limit of Dirac-Fock codes: the role of Brillouin configurations. Phys Rev Lett 2005; 94:013002. [PMID: 15698076 DOI: 10.1103/physrevlett.94.013002] [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: 08/10/2004] [Indexed: 05/24/2023]
Abstract
We solve a long standing problem with relativistic calculations done with the widely used multiconfiguration Dirac-Fock method. We show, using relativistic many-body perturbation theory (RMBPT), how, even for relatively high-Z, relaxation or correlation causes the nonrelativistic limit of states of different total angular momentum but identical orbital angular momentum to have different energies. We show that only large scale calculations that include all single excitations, even those obeying Brillouin's theorem, have the correct limit. We reproduce very accurately recent high-precision measurements in F-like Ar, and turn then to a precise test of QED. We obtain the correct nonrelativistic limit not only for fine structure but also for level energies and show that RMBPT calculations are not immune to this problem.
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Affiliation(s)
- P Indelicato
- Laboratoire Kastler Brossel, E'ole Normale Supérieure et Université Pierre et Marie Curie, Case 74, 4 place Jussieu, F-75252, Cedex 05, France.
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Lindroth E, Danared H, Glans P, Pesić Z, Tokman M, Vikor G, Schuch R. QED effects in Cu-like Pb recombination resonances near threshold. Phys Rev Lett 2001; 86:5027-5030. [PMID: 11384412 DOI: 10.1103/physrevlett.86.5027] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2000] [Indexed: 05/23/2023]
Abstract
In an electron-ion recombination study with Pb53+ dielectronic recombination resonances are found for as low as approximately 10(-3)-10(-4) eV relative energy. The resonances have been calculated by relativistic many-body perturbation theory and through comparison with experiment the Pb53+(4p(1/2)-4s(1/2)) energy splitting of approximately 118 eV is determined with an accuracy comparable to the position of the first few resonances, i.e., approximately 10(-3) eV. Such a precision provides a test of QED in a many-body environment at a level which can still not be reached in calculations.
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Affiliation(s)
- E Lindroth
- Department of Atomic Physics, Stockholm University, Frescativägen 24, SE-104 05 Stockholm, Sweden
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Schuch R, Madzunkov S, Lindroth E, Fry D. Unexpected x-ray emission due to formation of bound doubly excited states. Phys Rev Lett 2000; 85:5559-5562. [PMID: 11136046 DOI: 10.1103/physrevlett.85.5559] [Citation(s) in RCA: 2] [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: 08/02/2000] [Indexed: 05/23/2023]
Abstract
A strong emission of characteristic M x rays is observed, without an M vacancy initially present, when slow highly charged ions (Ta(q+), q = 39--48) capture a single electron in single collisions with rare gas atoms (He). This is explained by the formation of bound doubly excited states through electron correlation. An elaborate theoretical treatment shows that bound doubly excited states are mixed with states where a Rydberg electron is bound in the core of a highly charged ion. It is striking that this occurs with a large probability (close to unity), and one needs to assume that higher Rydberg states are populated than predicted by the overbarrier model in order to explain the experimental results.
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Affiliation(s)
- R Schuch
- Department of Atomic Physics, Stockholm University, S-104 05 Stockholm, Sweden
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Gwinner G, Hoffknecht A, Bartsch T, Beutelspacher M, Eklow N, Glans P, Grieser M, Krohn S, Lindroth E, Muller A, Saghiri AA, Schippers S, Schramm U, Schwalm D, Tokman M, Wissler G, Wolf A. Influence of magnetic fields on electron-Ion recombination at very low energies. Phys Rev Lett 2000; 84:4822-4825. [PMID: 10990807 DOI: 10.1103/physrevlett.84.4822] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/1999] [Indexed: 05/23/2023]
Abstract
Radiative recombination (inverse photoionization) is believed to be well understood since the beginning of quantum mechanics. Still, modern experiments consistently reveal excess recombination rates at very low electron-ion center-of-mass energies. In a detailed study on recombination of F6+ and C6+ ions with magnetically guided electrons we explored the yet unexplained rate enhancement, its dependence on the magnetic field B, the electron density n(e), and the beam temperatures T( perpendicular) and T( ||). The excess scales as T(-1/2)( perpendicular) and, surprisingly, as T(-1/2)( ||), increases strongly with B, and is insensitive to n(e). This puts strong constraints on explanations of the enhancement.
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Affiliation(s)
- G Gwinner
- Max-Planck-Institut fur Kernphysik, 69117 Heidelberg, Germany
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Lindroth E, Heully JL, Lindgren I, Martensson-Pendrill AM. A relativistic pair equation projected onto positive energy states. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/20/8/007] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Heully JL, Lindgren I, Lindroth E, Lundqvist S, Martensson-Pendrill AM. Diagonalisation of the Dirac Hamiltonian as a basis for a relativistic many-body procedure. ACTA ACUST UNITED AC 1999. [DOI: 10.1088/0022-3700/19/18/011] [Citation(s) in RCA: 322] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Berzinsh U, Haeffler G, Hanstorp D, Klinkmüller A, Lindroth E, Ljungblad U, Pegg DJ. Resonance structure in the Li- photodetachment cross section. Phys Rev Lett 1995; 74:4795-4798. [PMID: 10058601 DOI: 10.1103/physrevlett.74.4795] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Mårtensson-Pendrill A, Lindgren I, Lindroth E, Salomonson S, Staudte DS. Convergence of relativistic perturbation theory for the 1s2p states in low-Z heliumlike systems. Phys Rev A 1995; 51:3630-3635. [PMID: 9912029 DOI: 10.1103/physreva.51.3630] [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: 05/22/2023]
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Indelicato P, Lindroth E. Relativistic effects, correlation, and QED corrections on K alpha transitions in medium to very heavy atoms. Phys Rev A 1992; 46:2426-2436. [PMID: 9908399 DOI: 10.1103/physreva.46.2426] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Lindroth E, Hvarfner J. Relativistic calculation of the 2 (1)S0-2 (1),3P1 transitions in berylliumlike molybdenum and berylliumlike iron. Phys Rev A 1992; 45:2771-2776. [PMID: 9907307 DOI: 10.1103/physreva.45.2771] [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: 05/22/2023]
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Mooney T, Lindroth E, Indelicato P, Kessler EG, Deslattes RD. Precision measurements of K and L transitions in xenon: Experiment and theory for the K,L, and M levels. Phys Rev A 1992; 45:1531-1543. [PMID: 9907136 DOI: 10.1103/physreva.45.1531] [Citation(s) in RCA: 41] [Impact Index Per Article: 1.3] [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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Lindroth E, Persson H, Salomonson S, Mårtensson-Pendrill AM. Corrections to the beryllium ground-state energy. Phys Rev A 1992; 45:1493-1496. [PMID: 9907130 DOI: 10.1103/physreva.45.1493] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Lindroth E, Salomonson S. Relativistic calculation of the 2 (3)S1-1 (1)S0 magnetic dipole transition rate and transition energy for heliumlike argon. Phys Rev A 1990; 41:4659-4669. [PMID: 9903684 DOI: 10.1103/physreva.41.4659] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Heully J, Lindgren I, Lindroth E, Mrtensson-Pendrill A. Comment on relativistic wave equations and negative-energy states. Phys Rev A Gen Phys 1986; 33:4426-4429. [PMID: 9897198 DOI: 10.1103/physreva.33.4426] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Lindroth E, Mårtensson-Pendrill AM, Salomonson S. Specific mass shift of the (4s4p) 1,3P states in calcium studied with many-body perturbation theory. Phys Rev A Gen Phys 1985; 31:58-66. [PMID: 9895453 DOI: 10.1103/physreva.31.58] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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