作者: Richard N. Zare
DOI: 10.1063/1.1711847
关键词: Born approximation 、 Dipole 、 Momentum transfer 、 Anisotropy 、 Rotational energy 、 Kinetic energy 、 Multipole expansion 、 Atomic physics 、 Recoil 、 Chemistry 、 Physical and Theoretical Chemistry 、 General Physics and Astronomy
摘要: The angular distribution of products in the electron impact dissociation H2+ has been calculated following closely Born approximation treatment E. H. Kerner [Phys. Rev. 92, 1441 (1953)]. When translational kinetic energy separation greatly exceeds initial rotational molecule, as is normally case, fragments are ejected nearly along molecular axis. For ``axial recoil'' leading term differential cross section shows a cosine‐squared anisotropy peaked about momentum‐transfer vector, independent state molecule. This contrast to findings Kerner. inclusion higher‐order terms produces interference effects which shift maximum away from momentum transfer vector towards larger angles. However, contribution dipole strongly overshadows these multipole except certain cases quite...