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Title: | Compton cross sections in highly dense plasmas |
Authors: | Krishan, V |
Keywords: | Compton Cross Electromagnetic Radiation Dense Plasmas |
Issue Date: | 2002 |
Publisher: | Astronomical Society of India |
Citation: | BASI, Vol. 30, No. 1, pp. 261 - 268 |
Abstract: | The properties of the electromagnetic radiation undergo a fundamental change in the presence of a medium in general and a plasma in particular. Specially the dispersion relation is modified in a way that in a plasma, the square of the four-momentum of a photon is not zero. In an unmagnetized plasma, it is equal to the square of the plasma frequency. Further, the electron-photon coupling vertex along with the energy momentum conservation laws are also modified if the Compton processes occur in a plasma. As a result the cross sections of the three Compton processes, viz., the Compton scattering, the electron-positron pair annihilation and production become functions of the plasma density. The cross sections are found to change significantly in highly dense plasmas. |
URI: | http://hdl.handle.net/2248/2415 |
Appears in Collections: | BASI Publications |
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