Open AccessTheoretical calculation of integral cross sections of rotational excitation for collisions in isotopes of He atom with Na2 molecule
Author(s) -
Wenfeng Li,
Linghu Rong-Feng,
Xinlu Cheng,
Xiangdong Yang
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.4591
Subject(s) - excitation , ellipsoid , physics , atomic physics , atom (system on chip) , quantum mechanics , embedded system , astronomy , computer science
Multiple hard-ellipsoid model is a theoretical model which can more accurately decribe collisions between He atom and Na2 molecule. In this paper, we adopted the multiple hard-ellipsoid model to calculate the integral cross sections of rotational excitation for collisions in 3He,4He,7He,10He-Na2 systems at different relative incidence energies. This study shows that we can improve the accuracy of the results by increasing the number of equipotential ellipsoid surfaces. Moreover, we find that the integral cross sections of rotational excitation change with the relative incidence energy and reduced mass of the system. Finally, at relative incidence energy of 100 meV, we investigate the influence of different regions of the intermolecular potential on integral cross sections of rotational excitation in 4He-Na2 collisions.