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Time-resolved soft x-ray spectra from laser-produced Cu plasma

Conference ·
DOI:https://doi.org/10.1063/1.4739071· OSTI ID:1043659
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The volumetric heating of a thin copper target has been studied with time resolved x-ray spectroscopy. The copper target was heated from a plasma produced using the Lawrence Livermore National Laboratory's Compact Multipulse Terrawatt (COMET) laser. A variable spaced grating spectrometer coupled to an x-ray streak camera measured soft x-ray emission (800-1550 eV) from the back of the copper target to characterize the bulk heating of the target. Radiation hydrodynamic simulations were modeled in 2-dimensions using the HYDRA code. The target conditions calculated by HYDRA were post-processed with the atomic kinetics code CRETIN to generate synthetic emission spectra. A comparison between the experimental and simulated spectra indicates the presence of specific ionization states of copper and the corresponding electron temperatures and ion densities throughout the laser-heated copper target.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
1043659
Report Number(s):
LLNL-CONF-555312
Country of Publication:
United States
Language:
English

References (6)

Cretin—a radiative transfer capability for laboratory plasmas journal October 2001
Development of a time-resolved soft x-ray spectrometer for laser produced plasma experiments journal October 2010
A comparison of three-dimensional multimode hydrodynamic instability growth on various National Ignition Facility capsule designs with HYDRA simulations journal April 1998
Calibration of a flat field soft x-ray grating spectrometer for laser produced plasmas journal October 2010
Collimation of dense plasma jets created by low-energy laser pulses and studied with soft x-ray laser interferometry journal March 2010
Demonstration of transient gain x-ray lasers near 20??nm for nickellike yttrium, zirconium, niobium, and molybdenum journal January 1999

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Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COPPER
ELECTRON TEMPERATURE
EMISSION SPECTRA
HEATING
HYDRA
HYDRODYNAMICS
IONIZATION
KINETICS
LASER-PRODUCED PLASMA
PLASMA DIAGNOSTICS
RADIATIONS
SPECTRA
SPECTROMETERS
STREAK CAMERAS
TARGETS
X-RAY SPECTRA
X-RAY SPECTROSCOPY