Phys.Rev. C 90, 024610 (2014)

P.G.Sharov, I.A.Egorova, L.V.Grigorenko

Anomalous population of ¹⁰He states in reactions with ¹¹Li

NUCLEAR REACTIONS ¹H(¹¹Li, ¹⁰He), E not given; calculated excitation functions for population of different states in ¹⁰He through proton knockout reaction; deduced superposition of 1-, 0+ and 2+ states rather than resonant 0+ ground state for the experimentally observed resonance at 1.2-1.5 MeV, with 1- state calculated as the lowest excitation in ¹⁰He, and its ground-state at approximately 2.1 MeV instead of 1.3 MeV. Discussed three-body correlations in ¹⁰He, α-knockout from ¹⁴Be, core-recoil effect, halo structure, and constraints on the spectrum of ⁹He. Sudden removal of proton and three-body model.

doi: 10.1103/PhysRevC.90.024610