Positronium formation in <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup></mrow><mo>−</mo><mi mathvariant="normal">Li</mi></math></span> and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi>e</mi></mrow><mrow><mo>+</mo></mrow></msup></mrow><mo>−</mo><mi mathvariant="normal">Na</mi></math></span> collisions at low energies

E. Surdutovich; J. M. Johnson; W. E. Kauppila; C. K. Kwan; T. S. Stein

doi:10.1103/PhysRevA.65.032713

Positronium formation in $e^{+} - Li$ and $e^{+} - Na$ collisions at low energies

E. Surdutovich, J. M. Johnson, W. E. Kauppila, C. K. Kwan, and T. S. Stein

Phys. Rev. A 65, 032713 – Published 20 February 2002

Abstract

Measurements of positronium formation cross sections for positrons in the energy range down to a few tenths of one electron volt scattered by Li and Na atoms are reported. The reasonable agreement of the measured cross sections for Li with theoretical predictions is in striking contrast to the case for Na where there is a pronounced divergence between calculated and measured values below 1 eV.

Received 10 September 2001

DOI:https://doi.org/10.1103/PhysRevA.65.032713

Authors & Affiliations

E. Surdutovich, J. M. Johnson, W. E. Kauppila, C. K. Kwan, and T. S. Stein

Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48202

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Vol. 65, Iss. 3 — March 2002

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