Physics Letters B (Apr 2023)

First observation of high-spin states in 116In and possible new region of chirality

  • W.Z. Xu,
  • S.Y. Wang,
  • X.G. Wu,
  • H. Jia,
  • C. Liu,
  • H.F. Bai,
  • Y.J. Li,
  • B. Qi,
  • H.Y. Zhang,
  • G.S. Li,
  • Y. Zheng,
  • C.B. Li,
  • L. Mu,
  • A. Rohilla,
  • S. Wang,
  • D.P. Sun,
  • Z.Q. Li,
  • N.B. Zhang,
  • R.J. Guo,
  • X.C. Han,
  • X. Xiao

Journal volume & issue
Vol. 839
p. 137789

Abstract

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High-spin states in neutron-rich indium isotope 116In have been observed for the first time by using incomplete fusion of 7Li on a 116Cd target at a beam energy of 42 MeV. A negative-parity band with πg9/2−1⊗νh11/2 configuration and a pair of positive-parity doublet bands with πg9/2−1⊗ν(g7/2/d5/2)h11/22 configurations have been identified. The positive-parity doublet bands are tentatively interpreted as chiral doublet bands, which is supported by the adiabatic and configuration-fixed constrained triaxial relativistic-mean-field and multiparticle plus rotor model calculations. This observation reports a possible new region of chirality in neutron-rich A≈ 120 mass region.

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