Year: 1998
Type: article
Abstract: The efficiency of positron production by a 1.2-GeV electron beam incident on a tungsten single crystal oriented in an axially channeling condition has been experimentally studied. Positron yields from a 1.2-mm-thick crystal have been measured to be $\ensuremath{\sim}2.5--3.0$ times larger than those from amorphous targets with the same thickness. A simple model simulation of the positron production process shows that coherent bremsstrahlung, as well as channeling radiation, contributes to the enhancement of the positron yields.
Source: Physical Review Letters
Authors: K. Yoshida, K. Goto, T. Isshiki, I. Endo, T. Kondo, K. Matsukado, T. Takahashi, Y. Takashima, A. Potylitsin, C. Yu. Amosov, B. Kalinin, G. Naumenko, V. Verzilov, I. Vnukov, H. Okuno, K. Nakayama
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2052154231