Electronic Resource
College Park, Md.
:
American Institute of Physics (AIP)
The Journal of Chemical Physics
109 (1998), S. 9280-9287
ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
Synchrotron radiation from the storage ring BESSY-I is used to excite the S 2p regime (150–190 eV) of sulfur aggregates Sn, n=2–8. Valence states are identified in photoion yield spectra of mass selected Sn+ cations in combination with extended Hückel calculations. Mass spectra, partial ion yields, and photoelectron–photoion–photoion (PEPIPICO) coincidence spectra are reported, yielding a consistent picture of massive decay processes occurring in the S 2p regime. PEPIPICO spectra especially give detailed information on the fragmentation mechanisms of doubly charged aggregates. It is shown that most cation pairs are formed via charge separation originating from S8++. We derive values for the kinetic energy releases in multistep fragmentations assuming that charge separation is driven by Coulomb explosion. © 1998 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.477589
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