Vol.5 No.4 (April 2015)
Experimental Evaluation of Vibrational Relaxation Energy Transfer in Rb-H2(N2) Mixture
Rb-H2 mixture was irradiated with pulses of 420.4nm radiation from a DYE laser. The vibrational levels of RbH(Х1Σ+ v" = 0 - 2) generated in the reaction of Rb(6P) and H2. Highly vibrationally excited RbH(X1Σ+ v" = 17 - 20) were prepared using degenerate stimulated hyper-Raman pumping. An experimental study of vibrational relaxation energy transfer in RbH(X1Σ+ v" = 17 - 20)-H2(N2) collisions and their vibrational relaxation rate coefficients had been performed. A CW laser was used to probe the prepared vibrational state. The decay signal of laser induced time-resolved flu-orescence from A1Σ+(v')→Х1Σ+(v") transition was monitored. Based on the Stern-Volmer equation, the total relaxation rate coefficient kv"(H2) had been yielded. The total pressure of H2-N2 mixture was constant and the α(mole fraction N2) changed. The values of kv"(N2) were obtained in a similar method. The direct experimental evidence of multiquantum relaxation was prepared by time pro-files of relative intensity of RbH v" = 17, 20. The initial population for RbH (v" = 17, 20) was relaxed to much lower vibrational levels (Δv = −7 and Δv= −5).
岳 江 , 刘百慧 , 范鸿梅 , 戴 康 , 刘 静 (2015) Rb-H2(N2)系统中的振动碰撞能量弛豫。 应用物理， 5， 39-45. doi: 10.12677/APP.2015.54006
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