High spin structure in the odd-proton nucleus /sup 133/Pr

Journal Article · Tue Mar 01 00:00:00 EST 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.37.985· OSTI ID:5185841

Hildingsson, L; Beausang, C W; Fossan, D B; Piel, Jr, W F

The odd-proton nucleus /sup 133/Pr has been investigated using the /sup 118/Sn(/sup 19/F,4n) and /sup 117/Sn(/sup 19/F,3n) reactions. Several rotational bands could be followed up to high spins. The yrast band, built on a decoupled h/sub 11/2 proton, shows an upbend at (h2..pi..)..omega.. = 0.43 MeV when two additional h/sub 11/2 protons align. Two positive-parity side bands of opposite signature were established, both showing a band crossing at (h2..pi..)..omega.. = 0.27 MeV with a gain in alignment ..delta..i/sub x/)similarreverse arrowto)8(h2..pi..) when two h/sub 11/2 protons align. This low crossing frequency, compared to that observed in the /sup 132/Ce core nucleus, is partly explained by a reduction in the proton pairing gap. Three ..delta..I = 1 bands were observed;the lowest one is believed to represent a collective rotation of an oblate shape. The shape change is induced by the alignment of a pair of h/sub 11/2 neutrons from the upper midshell driving the nucleus from a prolate to an oblate shape

• Research Organization: Department of Physics, State University of New York, Stony Brook, New York 11794
• OSTI ID: 5185841
• Journal Information: Phys. Rev. C; (United States), Vol. 37:3
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
FLUORINE 19 REACTIONS
COMPOUND-NUCLEUS REACTIONS
PRASEODYMIUM 133
HIGH SPIN STATES
TIN 117 TARGET
TIN 118 TARGET
ANGULAR DISTRIBUTION
COINCIDENCE SPECTROMETRY
COLLECTIVE MODEL
DOPPLER EFFECT
GAMMA SPECTRA
NEUTRONS
PARITY
ROTATIONAL STATES
SPIN
TANDEM ELECTROSTATIC ACCELERATORS
YRAST STATES
ACCELERATORS
ANGULAR MOMENTUM
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
DISTRIBUTION
ELECTROSTATIC ACCELERATORS
ELEMENTARY PARTICLES
ENERGY LEVELS
EXCITED STATES
FERMIONS
HADRONS
HEAVY ION REACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
MATHEMATICAL MODELS
MINUTES LIVING RADIOISOTOPES
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
ODD-EVEN NUCLEI
PARTICLE PROPERTIES
PRASEODYMIUM ISOTOPES
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SPECTRA
TARGETS
651720* - Nuclear Properties & Reactions
A=90-149
Experimental