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Role of surface roughness in hard x-ray emission from femtosecond laser produced copper plasmas

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arxiv physics/0101019 v2 pith:3MAJEB4B submitted 2001-01-03 physics.plasm-ph physics.optics

P. P. Rajeev , S. Banerjee , A. S. Sandhu , L. C. Tribedi , G. R. Kumar This is my paper
classification physics.plasm-phphysics.optics
keywords emissionrangeroleroughnesssurfacex-raycopperenergy
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abstract

The hard x-ray emission in the energy range of 30-300 keV 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 investigated. We demonstrate that surface roughness of the targets overrides the role of polarization state in the coupling of light to the plasma. We further show that surface roughness has a significant role in enhancing the x-ray emission in the above mentioned energy range.

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