Low-energy electron scattering from Mg, Zn, Cd and Hg: shape resonances and electron affinities

Authors

• Paul Burrow, University of Nebraska - LincolnFollow
• J.A. Michejda, Mason Laboratory, Yale University, New Haven, Connecticut
• J. Comer, The University, Manchester

Document Type

Article

Date of this Version

1976

Citation

Published in Journal of Physics B: Atomic and Molecular Physics, Vol. 9, No. 18 (1976), pp. 3225–3236.

Comments

Copyright © 1976 IOP Publishing. Used by permission.

Abstract

Measurements of electron scattering at low energy from Mg, Zn, Cd and Hg have been carried out using the electron transmission method. A large shape resonance is observed for each element which we identify with the (ns²np)²P ground state of the negative ion. The electron affinities in eV are found to be Mg(–0.15), Zn(–0.49), Cd(–0,33) and Hg(–0.63) with an error of ±0.03 eV. The results are compared with the available theoretical predictions.