Rotational structures and their evolution with spin in Gd-152

D. B. Campbell, R. W. Laird, M. A. Riley, J. Simpson, F. G. Kondev, D. J. Hartley, R. V. F. Janssens, T. B. Brown, M. P. Carpenter, P. Fallon, S. M. Fischer, T. Lauritsen, D. Nisius, Ingemar Ragnarsson

Research output: Contribution to journalArticlepeer-review

Abstract

The fusion-evaporation reaction involving a 175 MeV S-36 beam and a Sn-124 target was performed, and the emitted gamma rays were observed with the Gammasphere spectrometer. Significant additions to the level scheme of Gd-152 were made in spite of the relative weakness of the alpha 4n exit channel, being only similar to 2% of the total fusion cross-section. The high-spin behavior of Gd-152 was compared with that of other N=88 nuclei. A striking similarity was observed with Dy-154 and it is therefore suggested that the angular-momentum-induced shape changes that take place in Dy-154 also occur in Gd-152 in the 30-40h spin range. This is supported by Cranked Nilsson-Strutinsky calculations which were used to interpret the high-spin bands. It is found that a better agreement between calculation and experiment is obtained if the Z=64 shell gap increases with a decreasing number of valence particles outside the doubly-closed Gd-146(64)82 nucleus.
Original languageEnglish
Article number064314
JournalPhysical Review C (Nuclear Physics)
Volume75
Issue number6
DOIs
Publication statusPublished - 2007

Bibliographical note

The information about affiliations in this record was updated in December 2015.
The record was previously connected to the following departments: Mathematical Physics (Faculty of Technology) (011040002)

Subject classification (UKÄ)

  • Physical Sciences

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