Astrophysics (index)

Bremsstrahlung

(Breaking Radiation, Free-Free Radiation)
(photon emission when a charged particle is decelerated)

Bremsstrahlung (Braking Radiation) is Electromagnetic Radiation (EMR) produced when a charged particle decelerates, when its course is deflected by another charged particle. A photon is emitted that balances the energy equation. The resulting radiation Emission has a Continuous Spectrum (Continuum Emission), as opposed, for example, to Emission Lines. It is also called Free-Free Radiation in expressing the point that it is not from an electron bound to an atom.

An astronomical source of Bremsstrahlung is the Intracluster Medium (ICM) associated with a Galaxy Clusters (CL).

The reverse of Bremsstrahlung radiation is also possible, called Free-Free Absorption, where an electron and another particle interact and a photon is absorbed. Free-Free Absorption occurs in HII Regions (HII), affecting their spectrum.


(EMR)
http://en.wikipedia.org/wiki/Bremsstrahlung

Referenced by:
Continuum Emission
Kramers' Opacity Law
Synchrotron Radiation

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