A study of picosecond laser{endash}solid interactions up to 10{sup 19} Wcm{sup {minus}2}

Journal Article · Sat Feb 01 04:00:00 EST 1997 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.872103· OSTI ID:466908

Beg, F N; Bell, A R; Dangor, A E; Danson, C N; Fews, A P; Glinsky, M E; Hammel, B A; Lee, P; Norreys, P A; Tatarakis, M ^[1]

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1. Imperial College of Science, Technology Medicine, Prince Consort Road, London, SW7 2AZ (United Kingdom)

The interaction of a 1053 nm picosecond laser pulse with a solid target has been studied for focused intensities of up to 10{sup 19} Wcm{sup {minus}2}. The maximum ion energy cutoff E{sub max} (which is related to the hot electron temperature) is in the range 1.0{endash}12.0 MeV and is shown to scale as E{sub max}{approx}I{sup 1/3}. The hot electron temperatures were in the range 70{endash}400 keV for intensities up to 5{times}10{sup 18} Wcm{sup {minus}2} with an indication of a high absorption of laser energy. Measurements of x-ray/{gamma}-ray bremsstrahlung emission suggest the existence of at least two electron temperatures. Collimation of the plasma flow has been observed by optical probing techniques. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 466908
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 2 Vol. 4; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
AMPLITUDES
BREMSSTRAHLUNG
ELECTRON TEMPERATURE
GAMMA RADIATION
LASER RADIATION
LASER-PRODUCED PLASMA
PLASMA DIAGNOSTICS
X RADIATION