Open AccessTracer spectroscopy diagnostics of doped ablators in inertial confinement fusion experiments on OMEGA
Author(s) -
David H. Cohen,
J. J. MacFarlane,
P. A. Jaanimagi,
O. L. Landen,
Donald Haynes,
David S. Conners,
Katherine L. Penrose,
Nathan C. Shupe
Publication year - 2004
Publication title -
physics of plasmas
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.75
H-Index - 160
eISSN - 1089-7674
pISSN - 1070-664X
DOI - 10.1063/1.1647135
Subject(s) - hohlraum , inertial confinement fusion , physics , omega , spectroscopy , laser , optics , spectral line , absorption (acoustics) , plasma , plasma diagnostics , radiation , atomic physics , tracer , computational physics , nuclear physics , astronomy , quantum mechanics
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.
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