Molecular alignment induced by a collision with the regulation of super-Gaussian laser pulse

We present a theoretical research of ion collision influence on molecular alignment regulated by the super-Gaussian laser pulse. Relevant results show that the super-Gaussian laser pulse is superior to the Gaussian laser pulse in improving the degree of collision-induced alignment. The influence of impact parameter and collisional velocity on maximal alignment degree in both the in- and post-pulse cases is discussed. As a whole, the maximal alignment degree is decreasing with the increase of the collision interaction parameters. With the increase of laser intensity and duration time, the maximal alignment degree of both in- and post-pulse cases shows the oscillation characteristic. Appropriate laser shape parameter can enhance the alignment degree, which is more obvious during the pulse. Moreover, the influence of temperature on collision-induced molecular alignment degree is also analysed.