Modeling of neutral hydrogen velocities in the Tokamak Fusion Test Reactor

Journal Article · Fri Nov 01 04:00:00 EST 1996 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.871540· OSTI ID:388232

Stotler, D P; Skinner, C H; Budny, R V; Ramsey, A T ^[1]; Ruzic, D N; Turkot, Jr, R B ^[2]

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1. Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States)
2. University of Illinois, 103 South Goodwin Avenue, Urbana, Illinois 61801 (United States)

Monte Carlo neutral transport simulations of hydrogen velocities in the Tokamak Fusion Test Reactor (TFTR) [K. M. McGuire {ital et} {ital al}., Phys. Plasmas {bold 2}, 2176 (1995)] are compared with experiment using the Doppler-broadened Balmer-{alpha} spectral line profile. Good agreement is obtained under a range of conditions, validating the treatment of charge exchange, molecular dissociation, surface reflection, and sputtering in the neutral gas code DEGAS [D. Heifetz {ital et} {ital al}., J. Comput. Phys. {bold 46}, 309 (1982)]. A residual deficiency of 10{endash}100 eV neutrals in most of the simulations indicates that further study of the energetics of H{sup +}{sub 2} dissociation for electron energies in excess of 100 eV is needed. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Princeton Plasma Physics Laboratory
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 388232
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 11 Vol. 3; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
BALMER LINES
CHARGE EXCHANGE
DISSOCIATION
DOPPLER BROADENING
FABRY-PEROT INTERFEROMETER
HYDROGEN
LIMITERS
MONTE CARLO METHOD
PLASMA SIMULATION
TFTR TOKAMAK