Two-photon coincidence studies of highly-charged ion relaxation in solids |
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| Authors: | Z D?Pe?i? Gy?Vikor H?Hanafy A?Enulescu R?Schuch |
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| Institution: | (1) Department of Atomic Physics, Stockholm University, 10405 Stockholm, Sweden;(2) Horia Hulubei National Institute for Physics and Nuclear Engineering, Bucharest, Romania;(3) Present address: Forschungszentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, 01328 Dresden, Germany |
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| Abstract: | We studied the relaxation of hollow atoms by two-photon transitions during the stopping of slow (E=8.5q keV) highly charged
Pbq+ (q=53–58) ions in a thin Ta foil. The X-rays emitted during the relaxation process were detected in coincidence with two
Si(Li) detectors. Particular attention was paid to the role of the internal dielectronic excitation (IDE) in the relaxation
dynamics. We found a clear contribution to relaxation by the IDE process also for projectiles with initial M-shell vacancies
and IDE speeds up relaxation of electrons from high Rydberg states by directly filling vacancies in the N-shell that is accompanied
with the excitation of M-shell electrons. We discuss the relaxation mechanism, and present results for the fluorescence yield
and the IDE probability of highly charged Pb ions in a solid. |
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| Keywords: | PACS" target="_blank">PACS 32 30 Rj X-ray spectra 34 70 +e Charge transfer |
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