Development of a time-resolved soft x-ray spectrometer for laser produced plasma experiments

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

DOI:https://doi.org/10.1063/1.3492407· OSTI ID:22055871

Cone, K V; Park, J ^[1]; Dunn, J; Schneider, M B; Brown, G V; Emig, J; James, D L; May, M J; Shepherd, R; Widmann, K ^[1]; Baldis, H A ^[2]

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1. Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
2. University of California at Davis, Davis, California 95616 (United States)

A 2400 lines/mm variable-spaced grating spectrometer has been used to measure soft x-ray emission (8-22 A) from laser-produced plasma experiments at Lawrence Livermore National Laboratory's Compact Multipulse Terrawatt (COMET) Laser Facility. The spectrometer was coupled to a Kentech x-ray streak camera to study the temporal evolution of soft x rays emitted from the back of the Mylar and the copper foils irradiated at 10{sup 15} W/cm{sup 2}. The instrument demonstrated a resolving power of {approx}120 at 19 A with a time resolution of 31 ps. The time-resolved copper emission spectrum was consistent with a photodiode monitoring the laser temporal pulse shape and indicated that the soft x-ray emission follows the laser heating of the target. The time and spectral resolutions of this diagnostic make it useful for studies of high temperature plasmas.

• OSTI ID: 22055871
• 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
COPPER
EMISSION SPECTRA
FOILS
GRATINGS
HOT PLASMA
LASER-PRODUCED PLASMA
LASER-RADIATION HEATING
LAWRENCE LIVERMORE NATIONAL LABORATORY
MYLAR
PULSE SHAPERS
SOFT X RADIATION
STREAK CAMERAS
TIME RESOLUTION
X-RAY EMISSION ANALYSIS
X-RAY SPECTROMETERS