Positron production in tungsten crystals by 1.2-GeV channeling electrons

K. Yoshida, K. Goto, T. Isshiki, I. Endo, T. Kondo, K. Matsukado, T. Takahashi, Y. Takashima, A. Potylitsin, C. Y.U. Amosov, B. Kalinin, G. Naumenko, V. Verzilov, I. Vnukov, H. Okuno, K. Nakayama

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)1437-1440
Number of pages4
JournalPhysical Review Letters
Issue number7
Publication statusPublished - 16 Feb 1998

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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