Abstract Femtosecond laser-induced dissociation and Coulomb explosion of polyatomic molecule C$_2$H$_6$ were systematically investigated using a time-of-flight mass spectrometer and a chirped pulse amplifier laser. With the laser intensity varying from $2.4\times10^{15}$W/cm$^{2}$ to $1.2\times10^{16}$W/cm$^2$, strong molecular ions C$_2$H$_n^+$ ($n$=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.
Received: 09 January 2004
Revised: 10 May 2004
Accepted manuscript online:
(General molecular conformation and symmetry; stereochemistry)
Fund: Project supported by the National Key Basic Research Special Foundation of China (Grant No TG1999075207), and the National Natural Science Foundation of China (Grant Nos 60378012, 10104003, 10328407 and 90101027).
Cite this article:
Li Xia (李霞), Ren Hai-Zhen (任海振), Ma Ri (马日), Chen Jian-Xin (陈建新), Yang Hong (杨宏), Gong Qi-Huang (龚旗煌) The dissociative ionization and Coulomb explosion of ethane by a femtosecond laser field 2004 Chinese Physics 13 1564
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