Measurements of the T(t, 2n)4He Neutron Spectrum at Low Reactant Energies from Inertial Confinement Implosions

Measurements of the neutron spectrum from the T(t, 2n)He-4 (tt) reaction have been conducted using inertial confinement fusion implosions at the OMEGA laser facility. In these experiments, deuterium-tritium (DT) gas-filled capsules were imploded to study the tt reaction in thermonuclear plasmas at low reactant center-of-mass (c.m.) energies. In contrast to accelerator experiments at higher c.m. energies (above 100 keV), these results indicate a negligible n + He-5 reaction channel at a c.m. energy of 23 keV.