Hard x-ray diagnostics for laser fusion plasmas analysis
- Commissariat a l'Energie Atomique, Centre de Limeil-Valenton, 94195 Villeneuve-Saint-Georges Cedex (France)
- CEA, Centre de Vaujours, B.P. 7, 77181 Courtry (France)
- CEA, CESTA, B.P. 2, 33114 Le Barp (France)
- CEA, Centre de Bruyeres-le-chatel, B.P. 12, 91680 Bruyeres-le-chatel (France)
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-{mu}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.
- OSTI ID:
- 7250766
- Journal Information:
- Review of Scientific Instruments; (United States), Journal Name: Review of Scientific Instruments; (United States) Vol. 63:10; ISSN RSINA; ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
700320* -- Plasma Diagnostic Techniques & Instrumentation-- (1992-)
ELECTROMAGNETIC RADIATION
ELECTRON MULTIPLIERS
ELECTRON TUBES
HARD X RADIATION
IMAGE SCANNERS
IONIZING RADIATIONS
LASER-PRODUCED PLASMA
MEASURING INSTRUMENTS
MICROCHANNEL ELECTRON MULTIPLIERS
PLASMA
PLASMA DIAGNOSTICS
RADIATION DETECTORS
RADIATIONS
SCINTILLATION COUNTERS
SOLID SCINTILLATION DETECTORS
SPECTROMETERS
X RADIATION
X-RAY SPECTROMETERS