Hard x‐ray diagnostics for laser fusion plasmas analysis
作者:
J‐L. Miquel,
J‐L. Bourgade,
D. Schirmann,
J. Veaux,
J‐P. Gex,
C. Cavailler,
J. de Mascureau,
V. Frotte´,
R. Trochet,
期刊:
Review of Scientific Instruments
(AIP Available online 1992)
卷期:
Volume 63,
issue 10
页码: 5097-5100
ISSN:0034-6748
年代: 1992
DOI:10.1063/1.1143450
出版商: AIP
数据来源: AIP
摘要:
Two diagnostics for the study of hard x‐ray emission produced by plasmas during inertial confinement fusion experiments, are described: (i) a hard x‐ray spectrometer to measure the high‐energy tail of the spectrum, with eight spectral bands in the 50–400‐keV range, by fluorescence and simple filter techniques; (ii) a time‐integrated pinhole imaging device using a microchannel plate converter tube and a 7.5‐&mgr;m‐thick tantalum photocathode adjusted for a mean spectral sensitivity around 200 keV. Adjustment and test of these diagnostics have been performed with a pulsed hard x‐ray generator using a plasma focus device. Absolute calibration of the spectrometer detectors (scintillator Photomultiplier) was obtained on an x‐ray tube with fluorescent emission lines (10–100 keV) and with a cobalt radioactive source at 1.23 MeV.
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