Angular distribution of x-ray emission from a copper target irradiated with a femtosecond laser

Hironaka, Yoichiro; Nakamura, Kazutaka G.; Kondo, Ken-ichi
December 2000
Applied Physics Letters;12/18/2000, Vol. 77 Issue 25
Academic Journal
Angular distribution of hard x rays that are generated by focusing a femtosecond (41 fs) laser with a power density of 1.3x10[sup 17] W/cm[sup 2] onto a copper target was studied. The total x rays over an energy range of 4-20 keV, which were mainly assigned to bremsstrahlung, showed forward emission particularly at s-polarized incidence and the characteristic x rays (Cu Kα emission) were almost isotropic. © 2000 American Institute of Physics.


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