A&A 406, 31-35 (2003)
Proton-electron bremsstrahlungE. 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
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