Chinese Journal of Lasers, Volume. 31, Issue s1, 195(2004)
Coulomb Explosion and Angular Distribution of Ions in Intense Femtosecond Laser
Mass spectras of CS2, CH, and CH3OH were measured with a time-of-flight (TOF) under conditions with laser intensity varying from 1013 W/cm2 to 1016 W/cm2 and a pulse duration of 110 fs. Different mass spectras with linear polarization and circularly polarization were observed The angular distribution of ions of CS2 indicated a spatial alignment from the coulomb explosion of highly charged parent ion. Moreover, the comparision of mass spectra with CH4 and CH3OH does not exhibit a feature of the double peak splited from C ions, which manifestes a concerted explosive process of CH4 This is consistent with the results of CS2 analysed by the method of the kinetic energy release(KER).
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MA Ri, REN Hai-zhen, CHEN Jian-xin, LI Xia, WU Cheng-yin, YANG Hong, GONG Qi-huang. Coulomb Explosion and Angular Distribution of Ions in Intense Femtosecond Laser[J]. Chinese Journal of Lasers, 2004, 31(s1): 195
Category: laser devices and laser physics
Received: --
Accepted: --
Published Online: Jan. 29, 2013
The Author Email: Ri MA (mari@pku.edu.cn)
CSTR:32186.14.