Positron Production in Tungsten Crystals by 1.2-GeV Channeling Electrons

Physical Review Letters Volume 80 Issue 7 Page 1437-1440 published_at 1998-02-16
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Title ( eng )
Positron Production in Tungsten Crystals by 1.2-GeV Channeling Electrons
Creator
Yoshida Katsuhide
Goto Kiminori
Isshiki Tetsuya
Endo Ichita
Kondo Toshihisa
Matsukado Koji
Takashima Yoshifumi
Potylitsyn Alexander P.
Amosov C. Yu.
Kalinin B. N.
Naumenko Gennady A.
Verzilov V. A.
Vnukov I. E.
Okuno Hideki
Nakayama Koichi
Source Title
Physical Review Letters
Volume 80
Issue 7
Start Page 1437
End Page 1440
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 ∼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.
Language
eng
Resource Type journal article
Publisher
American Physical Society
Date of Issued 1998-02-16
Rights
Copyright (c) 1998 American Physical Society.
Publish Type Version of Record
Access Rights open access
Source Identifier
[ISSN] 0031-9007
[DOI] 10.1103/PhysRevLett.80.1437
[NCID] AA00773679
[DOI] http://dx.doi.org/10.1103/PhysRevLett.80.1437