X-ray continuum emission spectroscopy from hot dense matter at Gbar pressures

Journal Article · Sat Nov 15 00:00:00 EST 2014 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.4890263· OSTI ID:22308589

Falcone, R. W. ^[1]; Döppner, T.; Kritcher, A. L.; Bachmann, B.; Collins, G. W.; Hawreliak, J. A.; Landen, O. L.; Ma, T.; Le Pape, S.; Swift, D. C. ^[2]; Chapman, D. A. ^[3]; Glenzer, S. H. ^[4]; Neumayer, P. ^[5]

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1. Department of Physics, University of California, Berkeley, California 94720 (United States)
2. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)
3. Plasma Physics Group, Radiation Physics Department, AWE plc, Reading RG7 4PR, United Kingdom and Centre for Fusion, Space and Astrophysics, University of Warwick, Coventry CV4 7AL (United Kingdom)
4. SLAC National Accelerator Laboratory, Menlo Park, California 94309 (United States)
5. GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt (Germany)

We have measured the time-resolved x-ray continuum emission spectrum of ∼30 times compressed polystyrene created at stagnation of spherically convergent shock waves within the Gbar fundamental science campaign at the National Ignition Facility. From an exponential emission slope between 7.7 keV and 8.1 keV photon energy and using an emission model which accounts for reabsorption, we infer an average electron temperature of 375 ± 21 eV, which is in good agreement with HYDRA-1D simulations.

• OSTI ID: 22308589
• Journal Information: Review of Scientific Instruments, Vol. 85, Issue 11; Other Information: (c) 2014 AIP Publishing LLC; 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
COMPUTERIZED SIMULATION
ELECTRON TEMPERATURE
EMISSION SPECTRA
EMISSION SPECTROSCOPY
EV RANGE
KEV RANGE
PHOTONS
POLYSTYRENE
PRESSURE RANGE MEGA PA 10-100
SHOCK WAVES
SPHERICAL CONFIGURATION
TIME RESOLUTION
US NATIONAL IGNITION FACILITY
X-RAY SPECTRA