Tracer spectroscopy diagnostics of doped ablators in inertial confinement fusion experiments on OMEGA

A technique has been developed for studying the time-dependent, local physical conditions in ablator samples in an inertial confinement fusion (ICF) hohlraum environment. This technique involves backlit point-projection absorption spectroscopy of thin tracer layers buried in the interior of solid sa...

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Veröffentlicht in:Physics of Plasmas 2004-05, Vol.11 (5), p.2702-2708
Hauptverfasser: Cohen, David H., MacFarlane, Joseph J., Jaanimagi, Paul, Landen, Otto L., Haynes, Donald A., Conners, David S., Penrose, Katherine L., Shupe, Nathan C.
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Sprache:eng
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Zusammenfassung:A technique has been developed for studying the time-dependent, local physical conditions in ablator samples in an inertial confinement fusion (ICF) hohlraum environment. This technique involves backlit point-projection absorption spectroscopy of thin tracer layers buried in the interior of solid samples mounted on laser-driven hohlraums. It is shown how detailed view-factor, atomic, hydrodynamics, and radiation-transport modeling can be used to infer time-dependent physical conditions in the interiors of these samples from the observed absorption spectra. This modeling is applied to the results of an experimental campaign on the OMEGA laser [T. R. Boehly et al., Opt. Commun. 133, 495 (1997)] designed to compare radiation-wave velocities in doped and undoped ICF ablator materials.
ISSN:1070-664X
1089-7674
DOI:10.1063/1.1647135