Abstract
Absorption and averaged energy absorption are studied in a plasma system comprising of Kappa distributed electrons. Electrons temperature and Kappa parameter influences on the absorption and the averaged energy absorption. The increase in the electron kappa parameters causes the absorption to increase. Results may be helpful, in understanding the absorption phenomena in laser plasma interaction in the presence of Kappa distributed electrons.
Highlights
The collisional absorption or inverse bremsstrahlung absorption of laser-light is one of the main heating mechanisms in laser-driven plasmas
Kundu[1] has studied this anomalous observation and gave partial explanation for the low intensity part. He has used the concept of Rutherford scattering and followed the ballistic model (BM) that it given by Mulser et al.,[3,11] where time-dependent collision frequency νei(t) was derived in strong laser field using the model under consideration of the electron velocity distribution function f (v) as a Maxwellian distribution.[1]
III, we show the results for investigating of fractional absorption by using Kappa distribution function and comparing those results with the Maxwellian function results
Summary
The collisional absorption or inverse bremsstrahlung absorption of laser-light is one of the main heating mechanisms in laser-driven plasmas. Kundu[1] has studied this anomalous observation and gave partial explanation for the low intensity part He has used the concept of Rutherford scattering and followed the ballistic model (BM) that it given by Mulser et al.,[3,11] where time-dependent (unlike the other works in which the time dependency was ignored4,6,7,12,13) collision frequency νei(t) was derived in strong laser field using the model under consideration of the electron velocity distribution function f (v) as a Maxwellian distribution.[1].
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