Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5395583 | Journal of Electron Spectroscopy and Related Phenomena | 2016 | 16 Pages |
Abstract
Coulomb explosion of CO2, CO2 â CO22+ + 2eâ â CO+ + O+ + 2eâ, in phase-locked two-color ultrashort intense laser fields (800 nm and 400 nm, â¼1014 W/cm2) has been investigated by coincidence momentum imaging. The momentum images of the O+ and CO+ fragments show asymmetric distributions along the laser polarization direction depending on the relative phase of the two-color laser fields. The fragment asymmetry becomes most prominent (â¼4%) at the relative phases providing the largest asymmetry of the electric field amplitude, with the O+ fragments preferentially ejected to the stronger field side. The mechanism of the asymmetric bond breaking of the two equivalent CO bonds is discussed in terms of the nuclear dynamics in CO22+.
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Chemistry
Physical and Theoretical Chemistry
Authors
Tomoyuki Endo, Hikaru Fujise, Akitaka Matsuda, Mizuho Fushitani, Hirohiko Kono, Akiyoshi Hishikawa,