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arXiv · 1504.02821

R-Matrix description of particle energy spectra produced by low-energy T+T reactions

C. R. Brune·J. A. Caggiano·D. B. Sayre·A. D. Bacher·G. M. Hale·M. W. Paris
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Abstract

An R-matrix model for three-body final states is presented and applied to a recent measurement of the neutron energy spectrum from the T+T->2n+alpha reaction. The calculation includes the n-alpha and n-n interactions in the final state, angular momentum conservation, antisymmetrization, and the interference between different channels. A good fit to the measured spectrum is obtained, where clear evidence for the 5He ground state is observed. The model is also used to predict the alpha-particle spectrum from T+T as well as particle spectra from 3He+3He. The R-matrix approach presented here is very general, and can be adapted to a wide variety of problems with three-body final states.

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C. R. Brune, J. A. Caggiano, D. B. Sayre, A. D. Bacher, G. M. Hale, M. W. Paris. 2015-04-11. R-Matrix description of particle energy spectra produced by low-energy T+T reactions. https://doi.org/10.1103/physrevc.92.014003

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