Centre for Antimatter-Matter Studies, Research School of Physics and Engineering, Australian National University, Canberra ACT 0200, Australia.
J Chem Phys. 2012 Nov 28;137(20):204307. doi: 10.1063/1.4767570.
We report on new measurements for elastic electron scattering from pyrazine. Absolute differential cross sections (DCSs) at seven discrete energies in the range 3-50 eV, and over the scattered electron angular range 10°-129°, were determined using a crossed electron-molecular beam spectrometer in conjunction with the well-established relative flow technique. Integral elastic cross sections were subsequently derived from those DCS data at each energy. Where possible comparison between the present results and those from sophisticated Schwinger multichannel and R-matrix computations is made, with generally quite good quantitative accord being found. Finally, in order to better study some of the rich resonance structure predicted by theory, results from elastic electron excitation functions are presented.
我们报告了从吡嗪中进行弹性电子散射的新测量结果。使用交叉电子分子束光谱仪结合成熟的相对流动技术，在 3-50 eV 的范围内的七个离散能量以及散射电子角度范围 10°-129°，测量了绝对微分截面 (DCS)。随后，从每个能量的 DCS 数据中推导出积分弹性截面。在可能的情况下，将本研究结果与复杂的 Schwinger 多通道和 R 矩阵计算结果进行了比较，发现具有相当好的定量一致性。最后，为了更好地研究理论预测的一些丰富的共振结构，给出了弹性电子激发函数的结果。
