Deuteron-Helium Differential Scattering Cross Sections

Deuteron-helium elastic scattering cross sections have been measured from $E_d=0.28\mathrm{} \mathrm{to} 4.62$ Mev. A resonance at $E_d=1.070\mathrm{}$ Mev and $\Gamma \sim 35$ kev was observed at 9 angles from 90° to 173.6° c.m. This resonance corresponds to the previously observed 2.187-Mev state of ${\mathrm{Li}}^6$. No scattering anomaly was observed at the deuteron energy corresponding to the known 3.58-Mev level of ${\mathrm{Li}}^6$. This negative result is consistent with an assignment of $J=0^{+}$, $T=1\mathrm{}$ to this state. A very broad scattering anomaly is observed from about 3 Mev to 4.62 Mev. Most of the cross section measurements are good to 3 percent or better in absolute magnitude.