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

The volumetric heating of a thin copper target has been studied with time resolved x-ray spectroscopy. The copper target was heated by a plasma produced using the Lawrence Livermore National Laboratory's Compact Multipulse Terawatt (COMET) laser. A variable spaced grating spectrometer coupled t...

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Bibliographic Details
Published in:Review of scientific instruments 2012-10, Vol.83 (10), p.10E138-10E138
Main Authors: Cone, K V, Baldis, H A, Dunn, J, May, M J, Purvis, M A, Schneider, M B, Scott, H A
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Computer simulation
COPPER
Density
ELECTRON TEMPERATURE
EMISSION SPECTRA
HEATING
HYDRA
HYDRODYNAMICS
IONIZATION
KINETICS
LASER-PRODUCED PLASMA
PLASMA DIAGNOSTICS
RADIATIONS
Soft x-rays
SPECTRA
SPECTROMETERS
STREAK CAMERAS
TARGETS
X-RAY SPECTRA
X-RAY SPECTROSCOPY
X-rays
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Summary:The volumetric heating of a thin copper target has been studied with time resolved x-ray spectroscopy. The copper target was heated by a plasma produced using the Lawrence Livermore National Laboratory's Compact Multipulse Terawatt (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 two-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.
ISSN:0034-6748
1089-7623
DOI:10.1063/1.4739071