Energy spectra of fusion neutrons from plasmas driven by reacting ion beams Page: 1 of 5
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Summary of Contributed Paper for the
4975 Winter Meeting of the American Nuclear Society
16-21 November 1975ENERGY SPECTRA OF FUSION NEUTRONS FROM PLASMAS DRIVEN
BY REACTING ION BEAMS
H.H. Towner and D.L. Jassby
Plasma Physics Laboratory, Princeton University
Princeton, New Jersey 08540t m a' 9
X3 23__;f
^H<"tiIn the two-energy-component tokamak reactor (TCT), fusion
energy is produced principally by reactions between injected
energetic deuterons and the relatively cold ions of the target
plasma (D, T, or 3He,. The large deuteron energy results in con-
siderable width of the energy spectrum of D-D or D-T neutrons
in the laboratory frame.1 This spectrum is important for plasma
diagnostics, and for optimum utilization of the neutrons in
various blankets surrounding the reacting plasma (such as fissile
or tritium breeding blankets).2 In this study, we calculate
neutron spectra for TCT reactors, using appropriate steady-state
velocity distributions for the fast deuterons.
General expressions for the angular and energy distributions
of fusion neutrons in terms of the distribution functions of the
reacting ions are given in Ref. 1. For the target ions, we use
a Maxwellian distribution of temperature T.. Since we are con-
cerned only with angle-averaged neutron energy spectra, we use
the hot-ion distribution function averaged over all angles. v),
If energy diffusion during slowing-down is neglected, then re-
gardless of the angle of injection into the tokamak plasma, the
/ i r i ' - r;i ~n w ~ t " .:- .
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Towner, H. H. & Jassby, D. L. Energy spectra of fusion neutrons from plasmas driven by reacting ion beams, article, January 1, 1975; New Jersey. (https://digital.library.unt.edu/ark:/67531/metadc867581/m1/1/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.