Rotational structures and their evolution with spin in {sup 152}Gd
- Lawrence Livermore National Laboratory, Livermore, California 94551 (United States)
- Department of Physics, Texas Lutheran University, Seguin, Texas 78023 (United States)
- Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States)
- CCLRC Daresbury Laboratory, Daresbury, Warrington, WA4 4AD (United Kingdom)
- Physics Division, Argonne National Laboratory, Argonne, Illinois 60439 (United States)
- Department of Physics, United States Naval Academy, Annapolis, Maryland 21402 (United States)
- Savannah River National Laboratory, Aiken, South Carolina 29802 (United States)
- Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 (United States)
- Department of Physics, DePaul University, Chicago, Illinois 60614-3504 (United States)
- Division of Mathematical Physics, LTH, Lund University, Box 118, S-221 00, Lund (Sweden)
The fusion-evaporation reaction involving a 175 MeV {sup 36}S beam and a {sup 124}Sn target was performed, and the emitted {gamma} rays were observed with the Gammasphere spectrometer. Significant additions to the level scheme of {sup 152}Gd were made in spite of the relative weakness of the {alpha}4n exit channel, being only {approx}2% of the total fusion cross-section. The high-spin behavior of {sup 152}Gd was compared with that of other N=88 nuclei. A striking similarity was observed with {sup 154}Dy and it is therefore suggested that the angular-momentum-induced shape changes that take place in {sup 154}Dy also occur in {sup 152}Gd 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 {sub 64}{sup 146}Gd{sub 82} nucleus.
- OSTI ID:
- 21003461
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 75, Issue 6; Other Information: DOI: 10.1103/PhysRevC.75.064314; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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