Abstract The kinetic energy release of fragment ions produced by the interaction of femtosecond laser pulse radiation with diatomic and linear triatomic molecules N$_2$, CO, CO$_2$ and CS$_2$ is investigated. In the case of linear polarization, angles at which the kinetic energy release of ions has the maximum value are different from the alignment of molecules though the kinetic energy release of fragment atomic ions depends on the angle between the laser polarization vector and the detection axis of the time-of-flight. For the diatomic molecules, the critical internuclear distance in multielectron dissociative ionization with a circularly polarized light is larger than that with a linearly polarized light. For linear triatomic molecules, our data indicate that a concerted Coulomb explosion process is a universal phenomenon in the interaction of molecules with intense laser fields, even in the circularly polarized regime. During two C－O (or C－S) bonds breaking simultaneously, the C ion obtained larger energy in circular polarization than that in the linear polarization. Different variations of kinetic energy release between the diatomic and the linear triatomic molecules are discussed.
Received: 29 May 2003
Revised: 13 August 2003
Accepted manuscript online:
Fund: Project supported by the National Key Basic Research Special Foundation of China (Grant No G1999075207), and the National Natural Science Foundation of China (Grant No 10104003, 90206003 and 90101027).
Cite this article:
Chen Jian-Xin (陈建新), Ma Ri (马日), Ren Hai-Zhen (任海振), Li Xia (李霞), Wu Cheng-Yin (吴成印), Yang Hong (杨宏), Gong Qi-Huang (龚旗煌) Kinetic energy release of diatomic and linear triatomic molecules in intense femtosecond laser fields 2004 Chinese Physics 13 24
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
