Positron Production in Tungsten Crystals by 1.2-GeV Channeling Electrons | Zendy

K. Yoshida | Zendy; Kazuki Goto | Zendy; T. Isshiki | Zendy; I. Endo | Zendy; T. Kondo | Zendy; Koji Matsukado | Zendy; Tohru Takahashi | Zendy; Yoshinori Takashima | Zendy; A.P. Potylitsin | Zendy; C. Yu. Amosov | Zendy; B. N. Kalinin | Zendy; G. A. Naumenko | Zendy; V. Verzilov | Zendy; И. Е. Внуков | Zendy; H. Okuno | Zendy; K. Nakayama | Zendy

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Positron Production in Tungsten Crystals by 1.2-GeV Channeling Electrons

Author(s) -

K. Yoshida,

Kazuki Goto,

T. Isshiki,

I. Endo,

T. Kondo,

Koji Matsukado,

Tohru Takahashi,

Yoshinori Takashima,

A.P. Potylitsin,

C. Yu. Amosov,

B. N. Kalinin,

G. A. Naumenko,

V. Verzilov,

И. Е. Внуков,

H. Okuno,

K. Nakayama

Publication year - 1998

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.80.1437

Subject(s) - tungsten , positron , electron , nuclear physics , physics , atomic physics , production (economics) , materials science , metallurgy , economics , macroeconomics

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. [S0031-9007(98)05357-5]

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