Rotational bands in /sup 140/Gd: Systematics of triaxial N = 76 isotones

Journal Article · Sun Jan 01 04:00:00 EST 1989 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.39.153· OSTI ID:6550716

Paul, E S; Ahn, K; Fossan, D B; Liang, Y; Ma, R; Xu, N

States up to I/sup ..pi../ = (20/sup +/) have been established in the neutron-deficient /sup 140/Gd nucleus by means of the /sup 92/Mo(/sup 50/Cr, 2p..gamma..) reaction. At a rotational frequency (h/2..pi..)..omega.. = 0.30 MeV, the ground-state band is crossed by a band built on the aligned (..pi..h/sub 11/2/)/sup 2/ two-quasiproton configuration. This proton-aligned band was observed from spins 10/sup +/ to (20/sup +/). A second 10/sup +/ state was established which is most likely built on the (..nu..h/sub 11/2/)/sup 2/ two-quasineutron configuration. The ..gamma..-vibrational band was observed up to I/sup ..pi../ = (8/sup +/) with the odd- and even-spin members exhibiting a pronounced signature splitting. The results are compared to those found recently for the lighter /sup 136/Nd and /sup 138/Sm N = 76 isotones.

• Research Organization: Department of Physics, State University of New York at Stony Brook, New York 11794
• OSTI ID: 6550716
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 39:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHROMIUM 50
CHROMIUM ISOTOPES
COINCIDENCE SPECTROMETRY
COMPOUND-NUCLEUS REACTIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY LEVELS
EVEN-EVEN NUCLEI
EXCITED STATES
FERMIONS
GADOLINIUM 140
GADOLINIUM ISOTOPES
GAMMA RADIATION
HADRONS
HEAVY ION FUSION REACTIONS
INTERMEDIATE MASS NUCLEI
IONIZING RADIATIONS
ISOTONIC NUCLEI
ISOTOPES
MATHEMATICAL MODELS
MOLYBDENUM 92 TARGET
NEODYMIUM 136
NEODYMIUM ISOTOPES
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
PARITY
PARTICLE PROPERTIES
PROTONS
QUASI PARTICLES
RADIATIONS
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
ROTATIONAL STATES
SAMARIUM 138
SAMARIUM ISOTOPES
SHELL MODELS
SPIN
STABLE ISOTOPES
TARGETS
VIBRATIONAL STATES
YRAST STATES