%0 Journal Article
%T The dissociative ionization and Coulomb explosion of ethane by a femtosecond laser field<br>The　dissociative　ionization　and　Coulomb　explosion　of　ethane　by　a　femtosecond　laser　field
%A Li Xi
%A Ren Hai-Zhen
%A Ma Ri
%A Chen Jian-Xin
%A Yang Hong
%A Gong Qi-Huang
%A <br>李霞
%A 任海振
%A 马日
%A 陈建新
%A 杨宏
%A 龚旗煌
%J 中国物理 B
%D 2004
%I 
%X Femtosecond laser-induced dissociation and Coulomb explosion of polyatomic molecule C_2H_6 were systematically investigated using a time-of-flight mass spectrometer and a chirped pulse amplifier laser. With the laser intensity varying from 2.4×10^{15}W/cm^{2} to 1.2×10^{16}W/cm^2, strong molecular ions C_2H_n^+ (n=0－6) and atomic ions C^{m+} (m=1－3) signals were observed. The double-peak structure of atomic ions indicated the occurrence of Coulomb explosion. Compared with the nearly isotropic distribution of C^{+}, highly charged ions C^{m+} (m=2－3) exhibited a sharply anisotropic angular distribution, which was attributed to the geometric alignment.
%K field ionization
%K multiphoton processes
%K mass spectra<br>电离场
%K 多光子加工
%K 飞秒激光器
%K 乙烷
%K 托马斯-费米-狄拉克模型
%K 分子物理学
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=CD8D6A6897B9334F09D8D1648C376FB4&aid=5DF89F60ECEE7C139F4B54A2CD0E6035&yid=D0E58B75BFD8E51C&vid=FC0714F8D2EB605D&iid=9CF7A0430CBB2DFD&sid=FDE90279419513E0&eid=E826542BD0A89666&journal_id=1009-1963&journal_name=中国物理&referenced_num=0&reference_num=36