DELAYED NEUTRON ALIGNMENT IN I-117

E S Paul, M P Waring, R M Clark, S A Forbes, D B Fossan, J R Hughes, D R Lafosse, Y Liang, R Ma, P Vaska, R Wadsworth

Research output: Contribution to journalComment/debatepeer-review

Abstract

The rotational alignment of h11/2 neutrons is considerably delayed (DELTA-HBAR-omega approximately 0.11 MeV) in the pi-h11/2[550]1/2- intruder band in I-117 when compared to bands built on normal-parity states. Comparison with cranked shell-model calculations suggests that this effect may indicate a larger quadrupole deformation for the intruder orbital. A strong neutron-proton interaction between the aligning h11/2 neutrons and the h11/2 proton intruder may also play a role. In addition, noncollective oblate states at I(pi) = 39/2-, 43/2-, and 45/2(-) compete energetically with rotational states of the intruder band which may also perturb the neutron alignment.

Original languageEnglish
Pages (from-to)R2531-R2531
Number of pages1
JournalPhysical Review C
Volume45
Issue number6
Publication statusPublished - Jun 1992

Keywords

  • HIGH-SPIN
  • ROTATIONAL BANDS
  • NUCLEI
  • REGION
  • DEFORMATION
  • SM-135

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