EDP Sciences
Free access
Volume 416, Number 2, March III 2004
Page(s) 437 - 440
Section Astrophysical processes
DOI http://dx.doi.org/10.1051/0004-6361:20034455

A&A 416, 437-440 (2004)
DOI: 10.1051/0004-6361:20034455

Research Note

Pair production by photons in a hot Maxwellian plasma

E. Haug

Institut für Astronomie und Astrophysik, Universität Tübingen, 72076 Tübingen, Auf der Morgenstelle 10, Germany

(Received 6 October 2003 / Accepted 22 December 2003)

The production of electron-positron pairs by photons in the Coulomb field of electrons and positrons (triplet production) in hot thermal plasmas is investigated. The pair production rate for this process is calculated as a function of the photon energy and compared with the rate of photon-nucleus pair production for semirelativistic and relativistic plasma temperatures.

Key words: gamma rays: theory -- plasmas

© ESO 2004