Cross sections forH3(7Li,n0)9Be andH3(7Li,ntot)

The ${}_{}{}^3{}_{}{}^{}\mathrm{H}$ ${(}^7$Li,${\mathit{n}}_0$ ${)}^9$Be cross section was measured for 0.15<${\mathit{E}}_{\mathrm{c}.\mathrm{m}.\mathrm{}}$<1.24 MeV at ${\mathrm{\theta }}_{\mathrm{lab}}$=0°, 45°, 90°, and 135° using Si(Li) diodes as neutron spectrometers. The ${}_{}{}^3{}_{}{}^{}\mathrm{H}$ ${(}^7$Li,${\mathit{n}}_{\mathrm{tot}}$) cross section was measured for 0.05<${\mathit{E}}_{\mathrm{c}.\mathrm{m}.\mathrm{}}$<1.5 MeV using a 4π neutron detector. The cross section for ${}_{}{}^3{}_{}{}^{}\mathrm{H}$ ${(}^7$Li,${\mathit{n}}_0$ ${)}^9$Be was used to calculate the thermonuclear reaction rate for the temperature range 0.3–10 GK. The results support predictions that ${}_{}{}^9{}_{}{}^{}\mathrm{Be}$ may be produced in quantities near spectroscopic limits of observation according to some models of inhomogeneous primordial nucleosynthesis.