Dissociation of H2+ by Electron Impact: Calculated Angular Distribution

作者: Richard N. Zare

DOI: 10.1063/1.1711847

关键词: Born approximationDipoleMomentum transferAnisotropyRotational energyKinetic energyMultipole expansionAtomic physicsRecoilChemistryPhysical and Theoretical ChemistryGeneral 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...

参考文章(20)
John Clarke Slater, Electronic structure of molecules McGraw-Hill. ,(1963)
Nevill Francis Mott, Harrie Stewart Wilson Massey, The theory of atomic collisions The theory of atomic collisions. ,(1949)
C. F. Curtiss, J. O. Hirschfelder, R. B. Bird, Molecular theory of gases and liquids ,(1954)
J. K. Cashion, Vibration—Rotation Interaction Factors for Diatomic Molecules Calculated by Numerical Methods Journal of Chemical Physics. ,vol. 41, pp. 3988- 3994 ,(1964) , 10.1063/1.1725846
Eugene V. Ivash, Dissociation of the Hydrogen Molecule Ion by Electron Impact Physical Review. ,vol. 112, pp. 155- 158 ,(1958) , 10.1103/PHYSREV.112.155
R.N. Zare, D.R. Herschbach, Doppler line shape of atomic fluorescence excited by molecular photodissociation Proceedings of the IEEE. ,vol. 51, pp. 173- 182 ,(1963) , 10.1109/PROC.1963.1676
G. Breit, H. A. Bethe, Ingoing Waves in Final State of Scattering Problems Physical Review. ,vol. 93, pp. 888- 890 ,(1954) , 10.1103/PHYSREV.93.888
L. J. Kieffer, R. J. Van Brunt, Energetic Ions from N2Produced by Electron Impact The Journal of Chemical Physics. ,vol. 46, pp. 2728- 2734 ,(1967) , 10.1063/1.1841104