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Modelling of K α X‐Ray Yield From a Foil Under the Vacuum Heating of Hot Electrons by a Femtosecond Laser Pulse
Author(s) -
Kostenko O. F.,
Andreev N. E.
Publication year - 2011
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.201110018
Subject(s) - foil method , laser , femtosecond , materials science , electron , atomic physics , yield (engineering) , cluster (spacecraft) , optics , physics , nuclear physics , computer science , metallurgy , composite material , programming language
Enhancement of characteristic x‐ray yield from a metal foil, coated with spherical clusters, irradiated by a p ‐polarized Gaussian femtosecond laser beam, is investigated depending on the cluster size, laser pulse intensity and the foil thickness. Simulations were carried out both for the hot electrons, accelerated in accordance with the Brunel model of vacuum heating, and for corresponding Maxwellian distribution of hot electrons. Existence of an interval of cluster sizes with respect to the laser wavelength, in which the number of emitted photons from the foil with clustered surface exceeds one from the polished foil, and increase of K α yield with growth of the laser field angle of incidence is most pronounced, is shown (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)