碰撞振动能量转移:Li2[A1∑u~+(v′=7)]+He→Li2[A1∑u~+(v''=6,8)]+He

吉旭; 戴康; 王倩

doi:10.13568/j.cnki.651094.2016.04.008

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碰撞振动能量转移:Li₂[A¹∑_u~+(v′=7)]+He→Li₂[A¹∑_u~+(v''=6,8)]+He

更新时间：2026-01-21

- 碰撞振动能量转移:Li₂[A¹∑_u~+(v′=7)]+He→Li₂[A¹∑_u~+(v''=6,8)]+He
- Journal of Xinjiang University (Natural Science Edition in Chinese and English) Vol. 33, Issue 4, Pages: 417-420(2016)
- 作者机构：
  
  新疆大学物理科学与技术学院
- 作者简介：
- 基金信息：
- DOI：10.13568/j.cnki.651094.2016.04.008
  CLC： O561.5
- Published：2016
- 稿件说明：
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[1]吉旭,戴康,王倩.碰撞振动能量转移:Li_2[A~1∑_u~+(v′=7)]+He→Li_2[A~1∑_u~+(v''=6,8)]+He[J].新疆大学学报(自然科学版),2016,33(04):417-420.
[1]吉旭,戴康,王倩.碰撞振动能量转移:Li_2[A~1∑_u~+(v′=7)]+He→Li_2[A~1∑_u~+(v''=6,8)]+He[J].新疆大学学报(自然科学版),2016,33(04):417-420. DOI： 10.13568/j.cnki.651094.2016.04.008.

DOI：10.13568/j.cnki.651094.2016.04.008.

摘要

利用激光诱导荧光方法研究了Li2[A1∑u~+(v′=7)]与He的碰撞能量转移.脉冲激光激发Li2基态至Li2[A1∑u~+(v″=7)]态

池温保持在623K

He气压在1Torr至10Torr之间变化

在He气体不同压强下

测量了转移荧光和直接荧光的时间积分荧光强度比.结合能级的速率方程分析

得到了v′=7的单量子驰豫转移速率系数和总去布居速率系数如下:k67=(1.20±0.48)×10-8cm3·s-1;k6=(0.88±0.26)×10-8cm3·s-1;k78=(2.52±0.63)×10-9cm3·s-1;k8=(1.00±0.30)×10-8cm3·s-1.

Abstract

Collisional energy transfer Li2[A1∑u~+(v′= 7)]with He has been studied by laser induced fluorescence.Li2 molecules were irradiated in a cell with pulses of radiation from a dye laser

populating Li2[A1∑u~+(v′=7)]by photon absorption.During the experiment

the cell temperature was kept constant at 623 K.The He pressure was varied between ITorr and lOTorr

Under different pressures of He gas

we have measured the time-integrated fluorescence intensity ratio of transfer fluorescence and direct fluorescence of Li2[A1∑u~+(v'= 7)].Using the method of molecular fluorescence spectrometry with level rate equation model analysis

single quantum relaxation transfer rate coefficient and total depopulation rate coefficients of Li2 of v'=7are as follows:k67=(1.20 ± 0.48)×10-8 cm3 ·s-1;k6=(0.88 ± 0.26)×10-8 cm3·s-1;k78=(2.52 ± 0.63)×10-9cm3 ·s-1;k8=(1.00 ±0.30)×10-8cm3·s-1.

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references

Yang X M,Kim E H,Wodtke A M.Vibration energy transfer of very highly vibrationally excited NO[J].J Chem Phys,1992,96(7):5111-5122.

Mach J A,Mikulecky K,Wodtke A M.Resonant vibration-vibration energy transfer between highly vibrationally excited O_2X~3∑_9~+(v=15-26),and CO_2,N_2O,N_2 and O_3[J].J Chem Phys,1996,105(10):4105-4116.

Flynn G W,Parmenter C S,Wodtke A M.Vibrational Energy Transfer[J].J Phys Chem,1996,100(31):12817.

Hutchson J M,Ohern R R,Stephenson T A,et al.Theoretical and experimental studies of collision-induced electronic energy transfer from v=0-3 of the E(0_g~+)ion-pair state of Br_2:Collisions with He and Ar[J].J Chem Phys,2008,128(18):184311.

Chandra P P,Stephenson T A.Franck-Condon effects in Collision-induced electronic energy transfer:I_2(E,V)+He,Ar[J].J Chem Phys,2008,128(7):184311.

Watanabe S,Usuda S,Fujii H,et al.Vibrational relaxation of O_2(X~3∑_g~+,v=9-13)by collisions with O_2[J].J Phys Chem A,2008,112(39):9290.

Dayou F,Hernandez M I,Campos-martinez J.Nonadiabatic couplings in the collisional removal of O_2(b~1∑_9~+)by O_2[J].J Chem Phys,2010,132(4):044313.

Kabir M H,Antonov I O,Merritt J M.Experimental and theoretical investigations of rotational energy transfer in HBr+He collisions[J].J Phys Chem A,2010,114(42):11109-11116.

Astill A G.Electronic energy transfer in Na_2[J].J Chem Phys,1986,125(1):33.

Polly R,Gruber D,Windholz L,et al.Collision-induced fluorescence of Cs_2 the 3~1∑_u~+→X~1∑_g~+system[J].J Chem Phys Lett,1996,249(3-4):174.

Chen H M,Li J.Quantum interference effect on collisional energy transfer within singlet-triplet mixed states of Na_2A~1∑_u~+(v=8)~b~3∏_(on)(v=14)[J].Chem Phys Lett,2000,31(1):107.

Stewart B,Magill D,Pritchard E.Quasi-Resonant Vibration-Rotation Transfer in Inelastic Li_2~*-Ne Collisions[J].J Phys Chem A 2000,104(45):10565.

Wang S Y,Zhang B,Zhu D H.Energy-dependence of vibrational relaxation between highly vibrationally excited KH(X~1∑,v″=14—23)and H_2,and N_2[J].Spectrochimica Acta Part A:Molecular and Biomolecular Spectroscopy,2012,96:517-525.

Chung H K,Kirby K,Babb J F.Theoretical study of the absorption spectra of the lithium dimmer[J].J Phys Rev A 1999,60(3):2002.

Ottinger C,Schroder M.Collision-induced rotational transitions of dye laser excited Li_2(A~1∑~+_u)molecules:cross sections and their+A J/-A J asymmetry[J].J Phys B:Atom Molec Phys 1980,13(21):4163.

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