Spin violation in double-electron capture by Ar4+ ions |
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| Institution: | 1. Istituto Officina dei Materiali del Consiglio Nazionale delle Ricerche (IOM-CNR), Sede di Perugia, c/o Dipartimento di Fisica e Geologia, Via A. Pascoli, I-06123 Perugia, Italy;2. Dipartimento di Fisica e Geologia, Università di Perugia, Via A. Pascoli, I-06123 Perugia, Italy;3. School of Physics, University of Western Australia, Crawley 6009, WA, Australia;4. Information Storage Materials Laboratory, Department of Electrical and Computer Engineering, National University of Singapore, 117576 Singapore, Singapore;1. LPMMAT, Faculté des Sciences Ain chock, Université Hassan II de Casablanca, B.P. 5366 Casablanca, Morocco;2. Institut Néel, CNRS, Université Joseph Fourier, BP 166, 38042 Grenoble Cedex 9, France;3. Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), UMR 7504 UDS-CNRS (UDS-ECPM), 23 rue du Loess, BP 43, F-67034 Strasbourg Cedex 2, France |
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| Abstract: | Translational energy spectroscopy has been employed to study state-selective double-electron capture by 8 keV Ar4+ in He and Ne targets, and 12 keV Ar4+ in He. The capture spectra are dominated by reaction channels which violate spin conservation. The double capture spectra for Ar4+ in He contain intense peaks which involve capture from the metastable quintet 5S0 state of Ar4+, recently identified in single capture spectra for Ar4+ in He and Ne. |
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