High resolution soft x-ray spectroscopy of low Z K-shell emission from laser-produced plasmas
A large radius, R = 44.3 m, High Resolution Grating Spectrometer (HRGS) with 2400 line/mm variable line spacing has been designed for laser-produced plasma experiments conducted at the Lawrence Livermore National Laboratory Jupiter Laser Facility. The instrument has been run with a low-noise, charge-coupled device detector to record high signal-to-noise spectra in the 10-50 {angstrom} wavelength range. The instrument can be run with a 10-20 {micro}m wide slit to achieve the best spectral resolving power, approaching 1000 and similar to crystal spectrometers at 12-20 {angstrom}, or in slitless operation with a small symmetrical emission source. We describe preliminary spectra emitted from various H-like and He-like low Z ion plasmas heated by 100-500 ps (FWHM), 527 nm wavelength laser pulses. This instrument can be developed as a useful spectroscopy platform relevant to laboratory-based astrophysics as well as high energy density plasma studies.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 965088
- Report Number(s):
- LLNL-JRNL-404496; RSINAK; TRN: US0903576
- Journal Information:
- Review of Scientific Instruments, Vol. 79; ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
42 ENGINEERING
74 ATOMIC AND MOLECULAR PHYSICS
70 PLASMA PHYSICS AND FUSION
ASTROPHYSICS
CHARGE-COUPLED DEVICES
ENERGY DENSITY
K SHELL
LASER-PRODUCED PLASMA
LASERS
LAWRENCE LIVERMORE NATIONAL LABORATORY
PLASMA
RESOLUTION
SPECTRA
SPECTROMETERS
SPECTROSCOPY
WAVELENGTHS
X-RAY SPECTROSCOPY