Low-lying resonance states in 7He

The cross section for the 6He+n channel as a function of the relative energy shows a structure, which is interpreted as being due to the 7He I π = 3/2− ground state resonance with about equal contribution from its I π = 1/2− spin-orbit partner at 1.2(2) MeV with a width Г = 1.0(2) MeV.