Elastic electron scattering from Be, Mg, and Ca

TL;DR

This paper provides detailed theoretical calculations of elastic electron scattering cross sections and Sherman functions for Be, Mg, and Ca at energies below 1 keV, extending previous methods to alkaline-earth metals.

Contribution

It applies a semi-empirical calculation method to new alkaline-earth metals, offering high-accuracy scattering data similar to prior results for barium and inert gases.

Findings

Accurate differential and integrated cross sections for Be, Mg, and Ca.

Sherman function values for calcium scattering.

Extension of previous methods to alkaline-earth metals.

Abstract

We present a comprehensive set of theoretical results for differential, integrated, and momentum transfer cross sections for the elastic scattering of electrons by beryllium, magnesium and calcium, at energies below 1 keV. In addition, we provide Sherman function values for elastic electron scattering from calcium in the same energy range. This study extends the application of our method of calculations, already employed for barium and strontium, to all stable alkaline-earth-metal atoms. Our semi-empirical approach to treating target polarization has produced in our earlier work a satisfactory agreement with experimental values and precise theoretical results such as convergent close-coupling calculations for barium. The present data are expected to be of similar high accuracy, based on our previous success in similar calculations for barium and all inert gases.