Fusion reactivities and neutron source characteristics of beam-driven toroidal reactors with both D and T injection

Technical Report · Thu Jan 01 04:00:00 EST 1976

DOI:https://doi.org/10.2172/4111905· OSTI ID:4111905

Jassby, D. L.; Towner, H. H.

The reactor performance is considered for intensely beam-driven tokamak plasmas with 50:50 D-T composition maintained by neutral-beam injection of both D and T, together with plasma recycling. The D and T are injected with equal intensity and velocity. This mode of operation is most appropriate for high-duty- factor, high-power-density operation, in the absence of pellet injection. The isotropic velocity distributions of energetic D and T ions (for multi-angle injection) are calculated from a simple slowing-down model, but include a tail above the injection velocity. The neutron source characteristics are determined from fusion reactivities calculated for beam-target, hot-ion, and thermonuclear reactions. For conditions where Q approximates 1, beam-target reactions are dominant, although reactions among the hot ions contribute substantially to P/sub fusion/ when n/sub hot//n /sub e/ greater than or equal to 0.2. (auth)

• Research Organization: Princeton Univ., N.J. (USA). Plasma Physics Lab.
• NSA Number: NSA-33-014375
• OSTI ID: 4111905
• Report Number(s): MATT--1180
• Country of Publication: United States
• Language: English

Related Subjects

*THERMONUCLEAR REACTORS-- NEUTRAL ATOM BEAM INJECTION
700101* --Fusion Energy--Plasma Research--Plasma Confinement & Heating
DEUTERIUM
N70100* --Physics--Controlled Thermonuclear Research-- Confinement & Heating
NEUTRON REACTIONS
NEUTRON SOURCES
TRITIUM