Stopping Powers for Positrons and Electrons

Autor:	Peter J. Simpson, G. C. Aers, Peter J. Schultz, G.R. Massoumi, W.N. Lennard
Rok vydání:	1995
Předmět:	Physics Energy loss Positron Yield (chemistry) Monte Carlo method General Physics and Astronomy Electron Atomic physics Stopping power Electrostatic analyzer
Zdroj:	Physical Review Letters. 74:3947-3950
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.74.3947
Popis:	Stopping cross sections for 20 keV positrons ({ital S}{sup +}) and electrons ({ital S}{sup {minus}}) in a thin (61 {mu}g/cm{sup 2}) Al target have been measured using an electrostatic analyzer. The results yield a ratio {ital S}{sup +}/{ital S}{sup {minus}}=1.15{plus_minus}0.08, in good agreement with the theoretically calculated value of 1.097. A marked dependence of the mean energy loss on an emergence angle has been observed for a thin target, and its origin is interpreted with the aid of Monte Carlo simulations.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::adfead9cdab8d91f271b7c18d7fa258c https://doi.org/10.1103/physrevlett.74.3947 Zobrazit plný text záznamu