THE RANGE OF ALKALI METAL IONS OF KILOELECTRON VOLT ENERGIES IN ALUMINUM

1 September 1960

journal article
Published by Canadian Science Publishing in Canadian Journal of Chemistry

Vol. 38 (9) , 1535-1546
https://doi.org/10.1139/v60-214

Abstract

A simple electrostatic accelerator capable of producing a monoenergetic beam of alkali metal ions at energies up to 100 kev has been used to study the range of Cs¹³⁷ ions in aluminum as a function of energy. The median range (R_M) increases linearly with energy as predicted from the Bohr–Nielsen equation, but has a value about twice that predicted by this equation. Furthermore, the observed straggling about the mean value is not Gaussian in shape, but consists of an asymmetric peak with a pronounced exponential "tail". The possible significance of these results is discussed. Preliminary results are given for the range of 30-kev Rb⁸⁶ and Na²¹ ions in aluminum.

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