Abstract
For ‘‘beam-target’’ fusion reactions, collimated measurements of the energy spectrum of one of the reaction products can provide information on the degree of anisotropy of the reacting beam ions. Analytical expressions relating the fusion spectrum to the velocity distribution of the beam ions are given. Application of the expressions to measurements of the spectrum of 15-MeV protons produced by reactions between energetic 3He ions and relatively cold deuterons during ICRF heating in the PLT tokamak indicate that the velocity distribution of fast 3He ions is peaked perpendicular to the tokamak magnetic field.
Highlights
For "beam-target" fusion reactions, collimated measurements of the energy spectrum of one of the reaction products can provide information on the degree of anisotropy of the reacting beam ions
Application of the expressions to measurements of the spectrum of I5-MeV protons produced by reactions between energetic 3He ions and relatively cold deuterons during ion cyclotron range of frequency (ICRF) heating in the PLT tokamak indicate that the velocity distribution offast 3He ions is peaked perpendicular to the tokamak magnetic field
Several authors 1.2 have related the energy distribution of neutrons produced by thermonuclear reactions to the temperature of the reactants, but no analytical treatments3 and only one set of numerical calculations4 relating the distribution function of nonthermal reactants to the energy spectrum of fusion reaction products has been published
Summary
For "beam-target" fusion reactions, collimated measurements of the energy spectrum of one of the reaction products can provide information on the degree of anisotropy of the reacting beam ions. Title Analytical expressions for fusion spectra produced in "beam- target" fusion reactions Analytical expressions for fusion spectra produced in "beam-target" fusion reactions
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