中国物理B ›› 2011, Vol. 20 ›› Issue (6): 63202-063202.doi: 10.1088/1674-1056/20/6/063202

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Laser-induced quadrupole–quadrupole collisional energy transfer in Xe–Kr

鲁振中, 陈德应, 樊荣伟, 夏元钦   

  1. National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150080, China
  • 收稿日期:2010-11-23 修回日期:2010-12-27 出版日期:2011-06-15 发布日期:2011-06-15

Laser-induced quadrupole–quadrupole collisional energy transfer in Xe–Kr

Lu Zhen-Zhong (鲁振中), Chen De-Ying (陈德应), Fan Rong-Wei (樊荣伟), Xia Yuan-Qin (夏元钦)   

  1. National Key Laboratory of Science and Technology on Tunable Laser, Harbin Institute of Technology, Harbin 150080, China
  • Received:2010-11-23 Revised:2010-12-27 Online:2011-06-15 Published:2011-06-15

摘要: By considering the relative velocity distribution function and multipole expansion interaction Hamiltonian, a three-state model for calculating the cross section of laser-induced quadrupole-quadrupole collisional energy transfer is presented. Calculated results in Xe-Kr system show that in the present system, the laser-induced collision process occurs for ~4 ps, which is much shorter than the dipole-dipole laser-induced collisional energy transfer (LICET) process. The spectrum of laser-induced quadrupole-quadrupole collisional energy transfer in Xe-Kr system has wider tunable range in an order of magnitude than the dipole-dipole LICET spectra. The peak cross section decreases and moves to the quasi-static wing with increasing temperature and the full width at half peak of the profile becomes larger as the system temperature increases.

Abstract: By considering the relative velocity distribution function and multipole expansion interaction Hamiltonian, a three-state model for calculating the cross section of laser-induced quadrupole-quadrupole collisional energy transfer is presented. Calculated results in Xe-Kr system show that in the present system, the laser-induced collision process occurs for ~4 ps, which is much shorter than the dipole-dipole laser-induced collisional energy transfer (LICET) process. The spectrum of laser-induced quadrupole-quadrupole collisional energy transfer in Xe-Kr system has wider tunable range in an order of magnitude than the dipole-dipole LICET spectra. The peak cross section decreases and moves to the quasi-static wing with increasing temperature and the full width at half peak of the profile becomes larger as the system temperature increases.

Key words: laser-induced collisional energy transfer, collisional cross section, Xe-Kr system

中图分类号:  (Line shapes, widths, and shifts)

  • 32.70.Jz
34.50.-s (Scattering of atoms and molecules)