Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5396794 | Journal of Electron Spectroscopy and Related Phenomena | 2009 | 5 Pages |
Abstract
An electron-ion coincidence momentum imaging apparatus has been developed and applied to dissociative ionization of CS2 in ultrashort intense laser fields. Photoelectron images of CS2 in 35Â fs intense laser fields (2Â ÃÂ 1013Â W/cm2, 800Â nm, linearly polarized) recorded in coincidence with the parent ion, CS2+, show clear concentric ring patterns due to the above-threshold ionization (ATI) process. On the other hand, broad structureless distributions elongated along the direction of the laser polarization are observed in the coincidence electron images for the CS+ and S+ fragment ions. The difference in the electron images indicates that the dissociative ionization does not proceed sequentially by the formation and photodissociation of CS2+ in intense laser fields.
Related Topics
Physical Sciences and Engineering
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Physical and Theoretical Chemistry
Authors
Akitaka Matsuda, Mizuho Fushitani, Akiyoshi Hishikawa,