Astronomy and Astrophysics – Astrophysics
Scientific paper
Oct 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...273..761d&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 273, Oct. 15, 1983, p. 761-773. Research supported by the Research Corp.
Astronomy and Astrophysics
Astrophysics
149
Electron-Positron Pairs, Elementary Particles, Pair Production, Particle Acceleration, Photons, Stellar Magnetic Fields, Electron Energy, Energy Distribution, Pulsars, Stellar Models
Scientific paper
The production of electron-positron pairs by single photons in magnetic fields of not less than about 10 to the 12th gauss has been investigated in detail for photon energy. The exact attenuation coefficient, which is derived and then evaluated numerically, is strongly influenced by the discrete energy states of the electron and positron. Near threshold, it exhibits a 'sawtooth' pattern as a function of photon energy and its value is significantly below that predicted by the asymptotic expression for the attenuation coefficient. The energy distributions of the created pair are computed numerically near threshold, and analytic expressions are derived in the asymptotic limit. These results indicate that as field strength and photon energy increase, it becomes increasingly probable for the pair to divide strength energy unequally. This effect, as well as the threshold behavior of the attenuation coefficient, could have important consequences to pulsar models.
Daugherty Joseph K.
Harding Alice K.
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