Published January 1989 | Version v1
Journal article Metadata-only

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

Creators

  • 1. Department of Physics, State University of New York at Stony Brook, New York 11794

Description

States up to I/sup π/ = (20+) have been established in the neutron-deficient /sup 140/Gd nucleus by means of the /sup 92/Mo(/sup 50/Cr, 2pγ) reaction. At a rotational frequency (h/2π)ω = 0.30 MeV, the ground-state band is crossed by a band built on the aligned [πh/sub 11/2/]2 two-quasiproton configuration. This proton-aligned band was observed from spins 10+ to (20+). A second 10+ state was established which is most likely built on the [νh/sub 11/2/]2 two-quasineutron configuration. The γ-vibrational band was observed up to I/sup π/ = (8+) 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

Additional details

Publishing Information

Journal Title
Physical Review, C
Journal Volume
39
Journal Issue
1
Series
Phys. Rev., C.
Journal Page Range
153-157
ISSN
0556-2813
CODEN
PRVCA

INIS

Country of Publication
United States
Country of Input or Organization
United States
INIS RN
20025219
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Descriptors DEI
CHROMIUM 50; COINCIDENCE SPECTROMETRY; COMPOUND-NUCLEUS REACTIONS; GADOLINIUM 140; GAMMA RADIATION; HEAVY ION FUSION REACTIONS; ISOTONIC NUCLEI; MOLYBDENUM 92 TARGET; NEODYMIUM 136; PARITY; PROTONS; QUASI PARTICLES; ROTATIONAL STATES; SAMARIUM 138; SHELL MODELS; SPIN; VIBRATIONAL STATES; YRAST STATES
Descriptors DEC
ANGULAR MOMENTUM; BARYONS; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CATIONS; CHARGED PARTICLES; CHROMIUM ISOTOPES; COINCIDENCE METHODS; COUNTING TECHNIQUES; ELECTROMAGNETIC RADIATION; ELECTRON CAPTURE RADIOISOTOPES; ELEMENTARY PARTICLES; ENERGY LEVELS; EVEN-EVEN NUCLEI; EXCITED STATES; FERMIONS; GADOLINIUM ISOTOPES; HADRONS; HEAVY ION REACTIONS; HYDROGEN IONS; HYDROGEN IONS 1 PLUS; INTERMEDIATE MASS NUCLEI; IONIZING RADIATIONS; IONS; ISOTOPES; MATHEMATICAL MODELS; MINUTES LIVING RADIOISOTOPES; NEODYMIUM ISOTOPES; NUCLEAR MODELS; NUCLEAR REACTIONS; NUCLEI; NUCLEONS; NUCLEOSYNTHESIS; PARTICLE PROPERTIES; RADIATIONS; RADIOISOTOPES; RARE EARTH NUCLEI; SAMARIUM ISOTOPES; SECONDS LIVING RADIOISOTOPES; STABLE ISOTOPES; SYNTHESIS; TARGETS