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Australian Journal of Physics Australian Journal of Physics Society
A journal for the publication of original research in all branches of physics
RESEARCH ARTICLE

Transfer of Angular Momentum in Electron Collisions with Alkali Atoms

B. V. Hall, M. Shurgalin, A. J. Murray, W. R. MacGillivray and M. C. Standage

Australian Journal of Physics 52(3) 515 - 522
Published: 1999

Abstract

Measurements of the transfer of angular momentum to rubidium and sodium atoms in collisions with electrons are reported. For excitation of the rubidium 52S1/2–52 P3/2 transition, it is found that existing first order distorted wave Born approximation calculations show poor agreement with the data and that a model which includes the relativistic interaction between the electrons and the atoms in the potential is needed. For the de-excitation of the sodium 42S1/2 –32 P3/2 transition, a long standing proposal relating to the sign of the transferred angular momentum is not supported except at small scattering angles. A convergent close coupling calculation displays excellent agreement with the measured data.

https://doi.org/10.1071/PH98097

© CSIRO 1999

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