Suits Arthur G, Bishwakarma Chandan Kumar, Song Lei, Groenenboom Gerrit C, van der Avoird Ad, Parker David H
†Institute for Molecules and Materials, Radboud University, 6525, Nijmegen, The Netherlands.
‡Department of Chemistry, Wayne State University, Detroit, Michigan 48202, United States.
J Phys Chem A. 2015 Jun 11;119(23):5925-31. doi: 10.1021/jp509381q. Epub 2014 Nov 25.
We present a novel means of analyzing velocity-map images of angular momentum polarization in inelastic scattering. In this approach, linear combinations of angular distributions obtained by integrating select regions of images for two probe laser polarizations directly yield the alignment-free differential cross sections and the differential alignment moments. No fitting is needed in the analysis. The method relies on the fact that the angular distribution for out-of-plane scattering is encoded in the distribution along the relative velocity vector, and this may be recovered quantitatively owing to the redundancy of the in-plane and out-of-plane scattering for the horizontal polarization case.
我们提出了一种分析非弹性散射中角动量极化速度映射图像的新方法。在这种方法中，通过对两个探测激光偏振的图像选定区域进行积分得到的角分布的线性组合，直接产生无取向微分截面和微分取向矩。分析过程无需拟合。该方法基于这样一个事实，即面外散射的角分布编码在沿相对速度矢量的分布中，并且由于水平偏振情况下面内和面外散射的冗余性，可以定量恢复这种角分布。
