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X-ray and fast ion generation from metal targets by femtosecond laser irradiation

Okano, Y ; Kishimura, H ; Hironaka, Y ; Nakamura, K G ; Kondo, K-I

Applied surface science, 2001-10, Vol.197-198, p.281-284 [Periódico revisado por pares]

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Título:
X-ray and fast ion generation from metal targets by femtosecond laser irradiation
Autor: Okano, Y ; Kishimura, H ; Hironaka, Y ; Nakamura, K G ; Kondo, K-I
É parte de: Applied surface science, 2001-10, Vol.197-198, p.281-284
Notas: SourceType-Scholarly Journals-2
ObjectType-Conference Paper-1
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SourceType-Conference Papers & Proceedings-1
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ObjectType-Article-3
Descrição: X-ray and fast ion generation has been studied by femtosecond laser irradiation (52 fs, 790 nm) on metal targets (copper and iron), where hard X-ray emission takes place at power density up to 10 exp 17 W/cm exp 2 . X-ray intensities and kinetic energy distributions of ions are observed as a function of the power density. The ion energy distributions for each target show several peak components, which are fast ions (high-energy component in keV range), and additional low-energy component (a few hundreds of eV). Average fast ion energies show a strong dependence on the power density, and are comparable to ponderomotive potential.
Idioma: Inglês

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