Rovibrational excitation of a diatomic molecule due to ion impact in the presence of IR laser beam

Abstract

Abstract.A theoretical study is made of rovibrational excitation of a CO molecule due to proton impact in the presence of an infrared laser beam taken in the electric dipole approximation. Non-perturbative quasi-energy method has been applied to describe laser-molecule interaction. Effect of laser and collision parameters on crosssection is investigated. To show the effect of laser on collision process we have compared our results with field free results.

Orientation and Alignment Dynamics of Polar Molecule Driven by Shaped Laser Pulses

“…When laser parameters like, field strength and pulse duration are made comparable with collisional interaction parameters better insight into reaction dynamics is achieved due to coherence effects taking place during collision process [26]. Laser assisted molecular excitations in ion-molecule collisions are important tool for understanding various molecular properties in depth [27][28][29]. Vibrational collisional excitations of He + + CO, system in presence of IR laser pulse have been studied theoretically [30] .…”

Rotational Excitation of Diatomic Molecule: Time Dependent Study

“…(14) using fourth-order Runge-Kutta method [30][31][32] with the initial condition taken as molecule being in the ground rotational J = M = 0 state at t = 0 state. This method is quite suitable in obtaining rotational probabilities as their is no dressing by the continuous laser field (which require alternate methods like quasi-energy technique as used by other groups [2][3][4]). In fact, we have applied a laser pulse of short duration.…”

“…The laser-induced collisions leading to energy transfer is an optical process where the laser field is applied during the collision between the two particles which could be the combination of ion with atoms or molecules [1][2][3][4][5][6][7][8], atom with atom [9][10][11] etc. The laser-induced collision was proposed in the 1970s [12,13].…”