Electron-ion-coincidence spectra of K -shell excited Ne, Ar, and Kr clusters

Electron-ion-coincidence spectra were recorded for K -shell excited krypton, argon, and neon clusters covering the size range from 1 atom to about 3000 atoms by utilizing hard x-ray undulator beamlines. Multiply charged ions R z + ( z ⩾ 2 ) and singly charged ions R n + ( n ⩾ 1 ) are observed as clu...

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Bibliographic Details
Published in:The Journal of chemical physics 2007-02, Vol.126 (5), p.054306-054306-7
Main Authors: Murakami, H., Nagaya, K., Ohmasa, Y., Iwayama, H., Yao, M.
Format: Article
Language:English
Subjects:
Argon - chemistry
Cluster Analysis
Electrons
Ions
Krypton - chemistry
Neon - chemistry
Radon - chemistry
Spectrum Analysis
Time Factors
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Summary:Electron-ion-coincidence spectra were recorded for K -shell excited krypton, argon, and neon clusters covering the size range from 1 atom to about 3000 atoms by utilizing hard x-ray undulator beamlines. Multiply charged ions R z + ( z ⩾ 2 ) and singly charged ions R n + ( n ⩾ 1 ) are observed as cluster fragments, and their relative abundance exhibits a characteristic dependence on the average cluster size ⟨ N ⟩ . It is expected from these results that the charges generated on the cluster surface are strongly localized while those in the cluster core are more delocalized. The estimated charge separation distance increases with ⟨ N ⟩ , and it is longer for lighter elements.
ISSN:0021-9606
1089-7690
DOI:10.1063/1.2430706