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Title: Mathematical modeling of gas-dynamic and radiative processes in experiments with the use of laser and heavy-ion beams

Results are presented from theoretical and experimental studies of gas-dynamic and radiative processes in the plasma that is planned to be used in future experiments on the stopping of fast heavy-ion beams. These experiments are aimed at measuring the enhanced (as compared to cold substance) plasma stopping power. To reliably interpret the experimental results, it is necessary to create a hydrodynamically stable homogeneous plasma with a uniform temperature and a lifetime exceeding the transit time of the heavy-ion beam (3–5 ns). The method for calculating plasma gas-dynamic characteristics with allowance for radiative heat transfer is described. The specific features of the so-called ion model of plasma, which is used to calculate plasma radiative characteristics, are discussed. The emission spectrum formed as a result of conversion of laser radiation into X-rays and the subsequent passing through a triacetate cellulose (C{sub 12}H{sub 16}O{sub 8}) target is calculated. The simulated spectrum of transmitted radiation satisfactorily agrees with experimental data.
Authors:
;  [1] ; ;  [2] ;  [3]
  1. Russian Academy of Sciences, Lebedev Physical Institute (Russian Federation)
  2. Russian Academy of Sciences, Joint Institute for High Temperatures (Russian Federation)
  3. GSI Helmholtzzentrum für Schwerionenforschung GmbH (Germany)
Publication Date:
OSTI Identifier:
22216079
Resource Type:
Journal Article
Resource Relation:
Journal Name: Plasma Physics Reports; Journal Volume: 39; Journal Issue: 9; Other Information: Copyright (c) 2013 Pleiades Publishing, Ltd.; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BEAMS; CELLULOSE; COMPARATIVE EVALUATIONS; EMISSION SPECTRA; EXPERIMENTAL DATA; HEAT TRANSFER; HEAVY IONS; HOMOGENEOUS PLASMA; LASER RADIATION; LASERS; MATHEMATICAL MODELS; SIMULATION; STOPPING POWER; X RADIATION