EDP Sciences
Free access
Volume 406, Number 1, July IV 2003
Page(s) 31 - 35
Section Cosmology
DOI http://dx.doi.org/10.1051/0004-6361:20030782

A&A 406, 31-35 (2003)
DOI: 10.1051/0004-6361:20030782

Proton-electron bremsstrahlung

E. Haug

Institut für Astronomie und Astrophysik, Universität Tübingen, 72076 Tübingen, Auf der Morgenstelle 10, Germany
(Received 16 May 2003 / Accepted 22 May 2003 )

The collision of energetic protons with free electrons is accompanied by the emission of bremsstrahlung. If the target electrons are approximately at rest, this process is designated electron-proton bremsstrahlung or suprathermal proton bremsstrahlung. The kinematics and the fully relativistic cross section of proton-electron bremsstrahlung in Born approximation is given. The X-ray spectrum produced by protons with a power-law spectrum is calculated for thin and thick targets.

Key words: radiation mechanisms: nonthermal -- X-rays: general

© ESO 2003