高压下振转激发的分子H₂的能量转移动力学

Energy-transfer dynamics of high-pressure rovibrationally excited molecular H2.

作者信息

Saiki David J, Cureton-Chinn Sarah, Kelly Peter B, Augustine Matthew P

机构信息

Department of Chemistry, University of California, Davis, 95616, USA.

出版信息

J Chem Phys. 2005 Sep 8;123(10):104311. doi: 10.1063/1.2012307.

DOI:10.1063/1.2012307

PMID:16178601

Abstract

The energy-transfer dynamics of high-pressure molecular H(2) gas initially prepared in the |X (1)Sigma(g) (+),v = 1,J = 1 state using stimulated Raman pumping are probed with rotational Raman scattering. A computer simulation that incorporates the effects of collision-induced vibrational energy transfer is described and used to fit the experimental Raman scattering results obtained as a function of the pump/probe delay time. The 4.78 x 10(-14) +/- 3.85 x 10(-16) cm(3) s(-1) molecule(-1) vibrational energy-transfer rate for decay from the |X (1)Sigma(g) (+),v = 1,J = 1 >state compares well with other lower-pressure studies.

摘要

利用受激拉曼泵浦技术，对初始制备于|X (1)Σ(g) (+), v = 1, J = 1态的高压分子氢气的能量转移动力学进行了旋转拉曼散射探测。描述了一个包含碰撞诱导振动能量转移效应的计算机模拟，并用于拟合作为泵浦/探测延迟时间函数获得的实验拉曼散射结果。从|X (1)Σ(g) (+), v = 1, J = 1>态衰变的振动能量转移速率为4.78×10(-14)±3.85×10(-16) cm(3) s(-1) 分子(-1)，与其他低压研究结果相当。