Measurement of the $^{3}{\rm H}(d,\gamma)$/$^{3}{\rm H}(d,n)$ Branching Ratio at Center-of-Mass Energies Below 300~keV
ORAL
Abstract
The branching ratio $^{3}{\rm H}(d,\gamma)^{5}{\rm He}$/$^{3}{\rm H}(d,n)\alpha$ has been measured using a 500-keV pulsed deuteron beam incident on a stopping titanium tritide target at the Edwards Accelerator Laboratory. The time-of-flight technique has been used to distinguish the $\gamma$-rays from the neutrons in the bismuth germinate $\gamma$-ray detector. Two stilbene scintillators and an NE-213 scintillator have been used to detect the neutrons using both the pulse-shape discrimination and time-of-flight techniques. The preliminary measurement at a cross-section-weighted average energy of 196 keV that produced a branching ratio measurement of (6.9$\pm$1.6)$\times$10$^{-5}$ and plans for future measurements will be presented.
*This work is supported in part by Lawrence Livermore National Laboratory, the U.S. Department of Energy, and the National Nuclear Security Administration through grant No. DE-NA0001837.
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