Forward scattering in the H+D2→HD+D reaction: Comparison between experiment and theoretical predictions
Forward scattering in the H+D2→HD+D reaction: Comparison between experiment and theoretical predictions
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H+D2→HD+D 反应中的前向散射：实验与理论预测的比较
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
J. Castillo
中科院分区：
文献类型：
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作者：
F. Fernandez;B. D. Bean;R. Zare;F. Aoiz;L. Bañares;J. Castillo
我们调查的灵敏度光引发实验前向散射功能的实验角分布与量子力学计算的直接比较，以及通过前向卷积的理论和模型的质心微分截面。我们发现，前向散射角的实验灵敏度取决于仪器的速度分辨率，以及检测到的产品通道的运动学。明确的比较实验HD（v′= 1，2;j′）的质心角分布在碰撞能量<$1.6 eV（推导出的飞行时间的轮廓，使用单激光，光解探针的方法）和量子力学计算的BKMP 2势能面。该比较考虑了来自HBr的光解的慢H原子和快H原子的贡献。我们发现，慢H原子的贡献，这是实验不确定性的主要来源，并没有很大影响提取…
We investigate the sensitivity of photoinitiated experiments to forward-scattering features by direct comparison of experimental angular distributions with quantum-mechanical calculations as well as by forward-convolution of theoretical and model center-of-mass differential cross sections. We find that the experimental sensitivity to forward-scattering angles depends on the instrumental velocity resolution as well as on the kinematics of the detected product channel. Explicit comparison is made between experimental HD(v′=1,2;j′) center-of-mass angular distributions at collision energies ≈1.6 eV (deduced from time-of-flight profiles using a single-laser, photolysis-probe approach) and quantum-mechanical calculations on the BKMP2 potential energy surface. The comparison takes into account the contributions from both slow and fast H atoms from the photolysis of HBr. We find that the contribution of the slow H atoms, which is the major source of experimental uncertainty, does not greatly affect the extraction...