Dependence of x-ray yield from aluminum plasma produced by a pair of femtosecond Ti:sapphire laser pulses on pulse time separation

Journal Article · Wed May 01 00:00:00 EDT 1996 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.50542· OSTI ID:397287

Nakano, H; Nishikawa, T; Ahn, H; Uesugi, N ^[1]

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1. NTT Basic Research Laboratories 3-1, Morinosato Wakamiya, Atsugi-shi, Kanagawa Pref. 243-01 (Japan)

The influence of a prepulse on soft x-ray emission in the range of 50{approximately}200 A from Al plasma produced by 130-fs Ti:sapphire laser pulses was studied at an intensity of 10{sup 14} W/cm{sup 2} at normal incidence. A prepulse with an intensity of 10{sup 13} W/cm{sup 2} caused enhancement of soft x-ray emission with a large time separation between prepulse and an intense main pulse. However at 800 nm, a prepulse resulted in reduction with small pulse time separation, contrary to previous reports. This observed trends were qualitatively explained in terms of the absorption dependence on scale length. {copyright} {ital 1996 American Institute of Physics.}

• OSTI ID: 397287
• Report Number(s): CONF-950476-; ISSN 0094-243X; TRN: 96:029374
• Journal Information: AIP Conference Proceedings, Vol. 369, Issue 1; Conference: 12. international conference on laser interaction and related plasma phenomena, Osaka (Japan), 24-28 Apr 1995; Other Information: PBD: May 1996
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
LASER-PRODUCED PLASMA
SOFT X RADIATION
ALUMINIUM
LASER TARGETS
PULSES
X-RAY SPECTRA
FS RANGE