Identification of the 10 Li ground state

2001
5 pages
Published in:
  • Phys.Lett.B 510 (2001) 24-28
  • Published: 2001

Citations per year

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Abstract: (Elsevier)
The proton-stripping reaction from a 11 Be radioactive beam incident on a beryllium target demonstrates that only (7±3)% of the 9 Li residues in the reaction are in coincidence with the 2.7 MeV γ -ray corresponding to the 9 Li first excited state. This implies that the previously observed low-energy neutrons from the decay of the unbound nucleus 10 Li represent a direct l =0 transition to the 9 Li ground state. Consequently, neutron-unbound 10 Li is proven to have the same parity inversion as occurs in the case of 11 Be with a  1 s 1 2 intruder state below the natural parity 0 p 1 2 state.
  • 25.70.Mn
  • 25.60.Gc
  • 25.60-t
  • 27.20+n