On the exchange and overlap corrections in electron capture |
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| Affiliation: | 1. CEA, LIST, Laboratoire National Henri Becquerel (LNE-LNHB), CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France;2. CEA, DEN, DER, Laboratoire de Dosimétrie, Capteurs et Instrumentation (LDCI), Cadarache, 13108 Saint Paul-lez-Durance, France;3. CEA, DEN, DRSN, Laboratoire de Support aux Programmes d''Irradiation (LSPI), CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France;4. CEA, DEN, DEC, Laboratoire d''Analyses Radiochimiques et Chimiques (LARC), Cadarache, 13108 Saint Paul-lez-Durance, France;1. Institute of Nuclear and Particle Physics, National Centre for Scientific Research “Demokritos”, GR-15310 Aghia Paraskevi, Attiki, Greece;2. Department of Physics, Faculty of Science, University of Zagreb, HR-10000 Zagreb, Croatia;3. Physics Department, Aristotle University of Thessaloniki, Thessaloniki GR-54124, Greece;4. Department of Physics, National and Kapodistrian University of Athens, Zografou Campus, GR-15784 Athens, Greece;5. Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, 72 Tzarigrad Road, 1784 Sofia, Bulgaria;1. Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada;2. National Superconducting Cyclotron Laboratory Michigan State University, East Lansing, Michigan 48824, USA;1. Department of Physics and Astronomy, McMaster University, Hamilton, Ontario L8S 4M1, Canada;2. National Superconducting Cyclotron Laboratory Michigan State University, East Lansing, Michigan 48824, USA;1. Institute of Nuclear Physics Polish Academy of Sciences, Radzikowskiego 152, PL-31342 Krakow, Poland;2. Università degli Studi di Milano and INFN Sezione di Milano, Via Celoria 16, 20133 Milano, Italy;3. Grand Accélérateur National d''Ions Lourds, CEA/DSM-CNRS/IN2P3, BP 55027, F-14076 Caen Cedex, France;4. Nuclear Energy Group, ESRIG, University of Groningen, Zernikelaan 25, NL-9747 AA Groningen, the Netherlands;5. “Horia Hulubei” National Institute for Physics and Nuclear Engineering, RO-077125 Bucharest-Magurele, Romania;6. Institut für Kernphysik, 52425 Jülich, Germany;7. Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France;8. Université Libre de Bruxelles, B-1050 Brussels, Belgium;9. National Centre for Nuclear Research, Pasteura 7, 02-093 Warsaw, Poland |
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| Abstract: | The approximations made in the calculations of the exchange and overlap correction coefficients were investigated. It is shown that the one-electron wave functions of the final state cannot be replaced by those of the unexcited daughter atom, and that the overlap of all inner s, p and d electrons is to be taken into consideration. The new approximation gives a better agreement with the experimental K/β+, L/K and M/L capture ratios than the old approximation. |
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