Acta Phys. -Chim. Sin. ›› 2005, Vol. 21 ›› Issue (03): 250-254.doi: 10.3866/PKU.WHXB20050305

• ARTICLE • Previous Articles     Next Articles

Theoretical Studies of Rotationally Inelastic Collisions of LiH with He

FENG Er-Yin; HUANG Wu-Ying; DONG Shu-Bao; CUI Zhi-Feng   

  1. Department of Physics, Anhui Normal University, Wuhu 241000; Anhui Institute of Optics & Fine Mechanics, Chinese Academy of Sciences, Hefei 230031
  • Received:2004-07-13 Revised:2004-09-29 Published:2005-03-15
  • Contact: FENG Er-Yin

Abstract: The process of rotationally inelastic collision of He-LiH complex has been discussed with close-coupling method based on the CCSD(T) potential energy surface. State-to-state partial and integral cross sections are calculated. The partial cross sections show that the transition cross sections of j=0→j′originate from the contributions of both the anisotropic short-range interaction and the long-range “soft” repulsion, while there is no evident for the long-range attraction. The state-to-state integral cross sections display an oscillatory structure. The long-range “soft” repulsion partial cross sections have only an effect on the integral cross sections for j=0→j′=1,2,3,and the cross sections for j′≥ 4 are almost decided by the anisotropic short-range partial.

Key words: He-LiH complex, Rotationally inelastic collision, Close-coupling method, Potential energy surface