Distortion of bulk-ion distribution function due to nuclear elastic scattering and its effect on T(d,n){sup 4}He reaction rate coefficient in neutral-beam-injected deuterium-tritium plasmas

Journal Article · Tue May 15 00:00:00 EDT 2007 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2734185· OSTI ID:20975019

Matsuura, H; Nakao, Y ^[1]

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1. Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, Motooka, Fukuoka 819-0395 (Japan)

An effect of nuclear elastic scattering on the rate coefficient of fusion reaction between field deuteron and triton in the presence of neutral beam injection heating is studied. Without assuming a Maxwellian for bulk-ion distribution function, the Boltzmann-Fokker-Planck (BFP) equations for field (bulk) deuteron, field (bulk) triton, {alpha}-particle, and beam deuteron are simultaneously solved in an ITER-like deuterium-tritium thermonuclear plasma [R. Aymar, Fusion Eng. Des. 55, 107 (2001)]. The BFP calculation shows that enhancement of the reaction rate coefficient due to knock-on tail formation in fuel-ion distribution functions becomes appreciable, especially in the case of low-density operations.

• OSTI ID: 20975019
• Journal Information: Physics of Plasmas, Vol. 14, Issue 5; Other Information: DOI: 10.1063/1.2734185; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALPHA PARTICLES
BEAM INJECTION HEATING
BEAMS
BOLTZMANN EQUATION
DEUTERIUM
DEUTERONS
DISTRIBUTION FUNCTIONS
ELASTIC SCATTERING
FOKKER-PLANCK EQUATION
HELIUM 4
ITER TOKAMAK
KNOCK-ON
PLASMA
PLASMA BEAM INJECTION
PLASMA CONFINEMENT
PLASMA DENSITY
REACTION KINETICS
TRITIUM
TRITONS