High spin states and isomers in /sup 151/Dy

Journal Article · Wed Aug 01 04:00:00 EDT 1979 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.20.605· OSTI ID:6245581

Lister, C J; Young, G R; Cline, D; Srebrny, J; Elmore, D; Butler, P A; Ledoux, R; Fridieu, R

High spin states and isomers in /sup 151/Dy have been studied using the /sup 122/Sn(/sup 32/S,3n)/sup 151/Dy and /sup 141/Pr(/sup 14/N,4n)/sup 151/Dy reactions. Levels up to J = 53/2 have been assigned, and two isomers at 4904 keV (J = 41/2, tau/sub 1/2/ = 7 +- 2 ns) and 6032 keV (J = 49/2, tau/sub 1/2/ = 10.9 +- 0.6 ns) have been identified. Gamma transitions de-exciting the isomers have B (E2) values characteristic of single-particle transitions. The yrast sequence exhibits an irregular dependence on excitation energy characteristic of an independent particle model rather than a deformed rotor. In addition, above J = 25/2 it exhibits an effective moment of inertia of 138 MeV/sup -1/ which is 1.18 times the rigid sphere value. These data are compared to recent spherical and deformed shell model predictions and a qualitative agreement is found between experiment and calculation.

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 6245581
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 20:2; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY RADIOISOTOPES
ANGULAR MOMENTUM
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
BRANCHING RATIO
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
COMPOUND-NUCLEUS REACTIONS
CROSS SECTIONS
DECAY
DYSPROSIUM 151
DYSPROSIUM ISOTOPES
E2-TRANSITIONS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
GAMMA SPECTRA
HEAVY ION REACTIONS
HIGH SPIN STATES
INTERMEDIATE MASS NUCLEI
ISOMERIC NUCLEI
ISOTOPES
LIFETIME
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
MULTIPOLE TRANSITIONS
NEUTRON SPECTRA
NITROGEN 14 REACTIONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
PARITY
PARTICLE PROPERTIES
PRASEODYMIUM 141 TARGET
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SHELL MODELS
SPECTRA
SPIN
SULFUR 32 REACTIONS
TARGETS
TIN 122 TARGET