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Radiation Emission of Fast Electrons in Collisions with “Ion‐Sphere” in Dense Plasmas
Author(s) -
Astapenko V. A.,
Rosmej F. B.,
Lisitsa V. S.,
Li Xiangdong
Publication year - 2013
Publication title -
contributions to plasma physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0863-1042
DOI - 10.1002/ctpp.201300002
Subject(s) - bremsstrahlung , atomic physics , electron , plasma , physics , ion , ionization , polarization (electrochemistry) , radiative transfer , nuclear physics , optics , chemistry , quantum mechanics
Radiative emission of fast electrons in collision with an “ion‐sphere” electron distribution in dense plasmas is under consideration. The electron structure of the ion sphere is calculated ab initio using self‐consistent solution of both bound and free electron distribution inside the sphere. Two radiation channels are included: emission of the colliding electron itself in static potential (conventional or static Bremsstrahlung) and the emission of “ion sphere” medium due to its polarization by the colliding electron (polarization Bremsstrahlung). The last one is calculated in the frame of local plasma density approximation. Interference between conventional and polarization Bremsstrahlung is taken into account. It is shown that spectral cross section of the process has characteristic features depending on plasma density and ionization stage of plasma ions. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)