High-K structure in {sup 250}Fm and the deformed shell gaps at N=152 and Z=100

Journal Article · Fri Aug 15 00:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.78.021303· OSTI ID:21192087

Greenlees, P T; Ketelhut, S; Grahn, T; Jones, P; Julin, R; Juutinen, S; Leino, M; Nyman, M; Rahkila, P; Saren, J; Scholey, C; Sorri, J; Uusitalo, J ^[1]; Herzberg, R -D; Butler, P A; Gray-Jones, C; Jones, G D; Moon, S; Pakarinen, J; Rostron, D ^[2]

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1. Department of Physics, University of Jyvaeskylae, FIN-40014 Jyvaeskylae (Finland)
2. Department of Physics, University of Liverpool, Oxford Street, Liverpool L69 7ZE (United Kingdom)

The structure of high-spin and nonyrast states of the transfermium nucleus {sup 250}Fm has been studied in detail. The isomeric nature of a two-quasiparticle excitation has been exploited in order to obtain spectroscopic data of exceptional quality. The data allow the configuration of an isomer first discovered over 30 years ago to be deduced, and provide an unambiguous determination of the location of neutron single-particle states in a very heavy nucleus. A comparison to the known two-quasiparticle structure of {sup 254,252}No confirms the existence of the deformed shell gaps at N=152 and Z=100.

• OSTI ID: 21192087
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 78, Issue 2; Other Information: DOI: 10.1103/PhysRevC.78.021303; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COMPARATIVE EVALUATIONS
CONFIGURATION
DEFORMED NUCLEI
EXCITATION
FERMIUM 250
ISOMERS
NEUTRONS
NOBELIUM 252
NOBELIUM 254
PARTICLES
SPIN