Miller, SL, Villafana, KA, Riley, MA, Simpson, J, Hartley, DJ, Paul, ES 
ORCID: 0000-0003-3651-5084, Ayangeakaa, AD, Baron, JS, Bertone, PF, Boston, AJ et al (show 24 more authors)
(2019)
Backbending, seniority, and Pauli blocking of pairing correlations at high rotational frequencies in rapidly rotating nuclei.
Physical Review C: Nuclear Physics, 100 (1).
014302-.
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Abstract
Garrett et al. systematically investigated band-crossing frequencies resulting from the rotational alignment of the first pair of i13/2 neutrons (AB) in rare-earth nuclei. In that study, evidence was found for an odd-even neutron number dependence attributed to changes in the strength of neutron pairing correlations. The present paper carries out a similar investigation at higher rotational frequencies for the second pair of aligning i13/2 neutrons (BC). Again, a systematic difference in band-crossing frequencies is observed between odd-N and even-N Er, Yb, Hf, and W nuclei, but in the BC case, it is opposite to the AB neutron-number dependence. These results are discussed in terms of a reduction of neutron pairing correlations at high rotational frequencies and of the effects of Pauli blocking on the pairing field by higher-seniority configurations. Also playing a significant role are the changes in deformation with proton and neutron numbers, the changes in location of single-particle orbitals as a function of quadrupole deformation, and the position of the Fermi surface with regard to the various ω components of the neutron i13/2 shell.
| Item Type: | Article |
|---|---|
| Depositing User: | Symplectic Admin |
| Date Deposited: | 17 Jul 2019 14:02 |
| Last Modified: | 15 Mar 2024 01:15 |
| DOI: | 10.1103/PhysRevC.100.014302 |
| Related URLs: | |
| URI: | https://livrepository.liverpool.ac.uk/id/eprint/3050060 |
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