Calibration of a flat field soft x-ray grating spectrometer for laser produced plasmas

Journal Article · Fri Oct 15 00:00:00 EDT 2010 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.3495790· OSTI ID:22055872

Park, J; Cone, K V ^[1]; Brown, G V; Schneider, M B; Beiersdorfer, P; Magee, E W; May, M J ^[1]; Baldis, H A ^[2]; Kelley, R L; Kilbourne, C A; Porter, F S ^[3]

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1. Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94551-0808 (United States)
2. University of California, Davis, One Shields Avenue, Davis, California 95616 (United States)
3. NASA Goddard Space Flight Center, Greenbelt, Maryland 20770 (United States)

We have calibrated the x-ray response of a variable line spaced grating spectrometer, known as the VSG, at the Fusion and Astrophysics Data and Diagnostic Calibration Facility at the Lawrence Livermore National Laboratory (LLNL). The VSG has been developed to diagnose laser produced plasmas, such as those created at the Jupiter Laser Facility and the National Ignition Facility at LLNL and at both the Omega and Omega EP lasers at the University of Rochester's Laboratory for Laser Energetics. The bandwidth of the VSG spans the range of {approx}6-60 A. The calibration results presented here include the VSG's dispersion and quantum efficiency. The dispersion is determined by measuring the x rays emitted from the hydrogenlike and heliumlike ions of carbon, nitrogen, oxygen, neon, and aluminum. The quantum efficiency is calibrated to an accuracy of 30% or better by normalizing the x-ray intensities recorded by the VSG to those simultaneously recorded by an x-ray microcalorimeter spectrometer.

• OSTI ID: 22055872
• Journal Information: Review of Scientific Instruments, Vol. 81, Issue 10; Other Information: (c) 2010 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALUMINIUM IONS
CALIBRATION
CARBON IONS
LASER-PRODUCED PLASMA
LASERS
LAWRENCE LIVERMORE NATIONAL LABORATORY
NEON IONS
NITROGEN IONS
OXYGEN IONS
PLASMA DIAGNOSTICS
QUANTUM EFFICIENCY
SHOWER COUNTERS
SOFT X RADIATION
US NATIONAL IGNITION FACILITY
X-RAY SPECTROMETERS