Fast-ion diffusion measurements from radial triton burn up studies

Technical Report · Sun Aug 01 00:00:00 EDT 1993

DOI:https://doi.org/10.2172/10181388· OSTI ID:10181388

McCauley, J S; Budny, R; McCune, D; Strachan, J D

A fast-ion diffusion coefficient of 0.1 {plus_minus} 0.1 m{sup 2}s{sup {minus}1} has been deduced from the triton burnup neutron emission profile measured by a collimated array of helium-4 spectrometers. The experiment was performed with high-power deuterium discharges produced by Princeton University`s Tokamak Fusion Test Reactor (TFTR). The fast ions monitored were the 1.0 MeV tritons produced from the d(d,t)p. These tritons ``burn up`` with deuterons and emit a 14 MeV neutron by the d(t,{alpha})n reaction. The ratio of the measured to calculated DT yield is typically 70%. The measured DT profile width is comparable to that predicted by the TRANSP transport code during neutral beam heating and narrower after the beam heating ended.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 10181388
• Report Number(s): PPPL-2932; ON: DE93040434; TRN: 93:020129
• Resource Relation: Other Information: PBD: Aug 1993
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHARGED-PARTICLE TRANSPORT
PLASMA DIAGNOSTICS
TFTR TOKAMAK
TRITONS
DIFFUSION
DEUTERON REACTIONS
BEAM INJECTION HEATING
ELECTRON TEMPERATURE
BURNUP
NEUTRON EMISSION
700330
700320
PLASMA KINETICS, TRANSPORT, AND IMPURITIES
PLASMA DIAGNOSTIC TECHNIQUES AND INSTRUMENTATION