Properties of $^{8-11}$Be isotopes with isospin-dependent spin–orbit potential in a cluster approach
2021
The nonlocalized clustering approach is generalized to $$^{8-11}$$
Be isotopes with isospin dependent spin–orbit potential. A new form of the Tohsaki-Horiuchi-Schuck-Ropke (THSR) wave function is introduced to provide a correct description for the $$\sigma $$
-binding neutron in $$^{11}$$
Be. Systematic calculations for $$^{8-11}$$
Be isotopes are performed and results fit well with experimental values. The low energy spectrum of $$^{11}$$
Be is also obtained, especially the correct spin-parity $$1/2^{+}$$
is reproduced for the intruder ground state. The exotic neutron halo structure of $$^{11}$$
Be is studied by calculations of root-mean-square radii and density distribution. The spectroscopic factor is also calculated and discussed for the $$1/2^+$$
ground state of $${}^{11}$$
Be.
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