Journal
HIGH ENERGY DENSITY PHYSICS
Volume 19, Issue -, Pages 29-37Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.hedp.2016.02.002
Keywords
Inertial confinement fusion; Thermonuclear reactions; Nuclear reaction products; Three-body final states
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Funding
- Engineering and Physical Sciences Research Council [EP/K028464/1] Funding Source: researchfish
- EPSRC [EP/K028464/1] Funding Source: UKRI
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The effects of ion temperature on the energy spectra of products of the T + T -> 2n + alpha reaction are modelled and analysed. A model is derived by assuming that the spectra in the centre of mass (CM) frame for a given reaction energy are known. The model is then applied to two different sets of data for the energy spectra in the CM frame. In both cases, it is shown that varying the ion temperature causes significant changes in the shapes of the n and alpha spectra. For the n spectrum, the apparent intensity of sequential decay through the ground state of He-5 decreases with increasing temperature. For the a spectrum, the sharp edge in the CM frame spectrum near 3.75MeV caused by the dineutron reaction channel results in a thermally broadened spectrum with a high-energy tail at energies > 4MeV. Knowledge of such features may help to interpret data from experiments designed to investigate the T + T reaction at low reaction energies. (C) 2016 Elsevier B.V. All rights reserved.
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