Roughness enhanced K x-ray emission from femtosecond laser produced copper plasmas

Details Roughness enhanced K x-ray emission from femtosecond laser produced copper plasmas Roughness enhanced K x-ray emission from femtosecond laser produced copper plasmas

2001-07-12

arxiv.org/abs/physics/0107022v1

Physics

Plasma Physics

6 pages, 2 figures, submitted to Applied Physics Letters

Scientific paper

K x-ray emission from copper plasmas produced by 100 fs, 806 nm laser pulses at intensities in the range of 10^15-10^16 W cm^-2 is studied with respect to input laser polarization and target surface conditions. We demonstrate that even moderate surface roughness enhances the characteristic x-ray yield by as much as 70 %. We further show that surface roughness of the targets overrides the effect of polarization state in light coupling to the plasma.

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