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Electron-positron pair production by ultrarelativistic electrons in a soft photon fieldThe fully differential cross section for photon-electron pair production is integrated numerically over phase space. Results are obtained for the astrophysically interesting case in which the interaction between an ultrarelativistic electron and a soft photon results in electron-positron pair production. The positron spectrum is a function of the energies of both the photon and the electron, as well as the angle of interaction. It is found that the energy at which the positron distribution peaks is inversely proportional to the photon energy and independent of the electron energy. The positron spectrum is integrated once more over initial electron energies for a power-law energy distribution of primary electrons. The same procedure is repeated for the recoil particle; it is shown that the peak of the recoil energy distribution depends linearly on the energy of the primary electron. Finally, semianalytical expressions are obtained for the energy losses of the primary electrons.
Document ID
19860040402
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Mastichiadis, A.
(Boston Univ. Boston, MA, United States)
Marscher, A. P.
(Boston Univ. Boston, MA, United States)
Brecher, K.
(Boston University MA, United States)
Date Acquired
August 12, 2013
Publication Date
January 1, 1986
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 300
ISSN: 0004-637X
Subject Category
Astrophysics
Accession Number
86A25140
Funding Number(s)
CONTRACT_GRANT: NAG8-467
Distribution Limits
Public
Copyright
Other

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