Two-photon decay of K-shell vacancy states in heavy atoms (CROSBI ID 511714)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Ilakovac, Ksenofont ; Uroić, Milivoj ; Majer, Marija ; Pašić, Selim ; Vuković, Branko
engleski
Two-photon decay of K-shell vacancy states in heavy atoms
Two-photon decay has been extensively studied in atomic, nuclear and particle physics since the 1930s when the problem of stability of the 2s state of the hydrogen atom emerged. Since then, many theoretical and experimental investigations have been made on hydrogen and one-electron (H- like) ions and on helium and two-electron (He- like) ions. The work on two-photon decay in many- electron systems involving inner shells started about thirty years ago and, in the meantime, two- photon decay of the K-shell vacancy state has been the subject of many theoretical and experimental studies. Experimental results have been obtained for for 2s -> 1s and higher-state electron -> 1s two-photon transitions in molybdenum, and for 2s -> 1s, 3s -> 1s, 3d -> 1s and 4sd -> 1s two-photon transitions in silver, xenon, hafnium and mercury. Nonrelativistic and relativistic calculations of the processes have been made. The relativistic calculations for transitions in molybdenum, silver and xenon atoms are in a reasonable agreement with the experimental results, but some problems remain to be solved. A review of investigations of two- photon transitions in atomic systems is presented.
Two-photon decay ; H-like and He-like systems ; Decay of K-shell vacancy states in heavy atoms ; Resonance effect in 3d -> 1s two-photon transitions.
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Podaci o prilogu
2005.
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Podaci o matičnoj publikaciji
Podaci o skupu
X05: X-ray and Inner-Shell Processes
pozvano predavanje
04.07.2005-08.07.2005
Melbourne, Australija