Vinylidene dissociation following the Auger-electron decay of inner-shell ionized acetylene

被引：22
|
作者：
Flammini, R. [1 ]
Fainelli, E. [1 ]
Maracci, F. [1 ]
Avaldi, L. [1 ]
机构：
[1] CNR, IMIP, I-00016 Monterotondo, RM, Italy
来源：
PHYSICAL REVIEW A | 2008年 / 77卷 / 04期
关键词：
D O I：
10.1103/PhysRevA.77.044701
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The acetylene-vinylidene isomerization and the dissociation of the C2H22+ dication formed in the inner-shell ionization by electron impact have been studied via Auger-electron-ion and Auger-electron-ion-ion coincidence experiments. The occurrence of the isomerization is proved by measuring the production of the CH2+ fragment ion as well as by detecting the C+-CH2+ ion pair in coincidence. The state selectivity of the technique shows that isomerization mainly takes place in the three 1 pi(-2)(u) lower states of the acetylene dication.
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页数：4
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