Published June 17, 1985 | Version v1
Journal article Metadata-only

Deformation in odd-mass nuclei near Aaproportional100: One- and three-quasiparticle Nilsson states in 3999Y60

Creators

  • 1. Lawrence Livermore National Lab., CA (USA). Nuclear Chemistry Div.
  • 2. Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Kernphysik
  • 3. CEA Centre d'Etudes Nucleaires de Grenoble, 38 (France). Lab. de Chimie Physique Nucleaire
  • 4. Lund Inst. of Tech. (Sweden). Dept. of Mathematical Physics
  • 5. Institut Max von Laue - Paul Langevin, 38 - Grenoble (France)

Description

The deexcitation of the 8.6 μs isomer of 3999Y has been studied using γ-ray spectroscopy techniques at LOHENGRIN and JOSEF. The resultant level scheme is analyzed within the framework of the particle-rotor coupling model. The ground-state band, to spin 19/2+, is found to have band properties consistent with a π[422 5/2] Nilsson assignment. The 8.6 μs isomer and a side band with a band-head half-life of 1.4 ns are found to have Jsup(π) values of 17+/2 and 11+/2, respectively. Their properties are consistent with a [π[422 5/2]ν[411 3/2]ν[404 9/2]] assignment. Some evidence is given for the dominance of the νν interaction over the πν interaction in these three-quasiparticle partners. (orig.)

Additional details

Publishing Information

Journal Title
Nucl. Phys., A
Journal Volume
439
Journal Issue
3
Series
CODEN: NUPAB.;Nucl. Phys., A.
Journal Page Range
510-534
ISSN
0375-9474

INIS

Country of Publication
Netherlands
Country of Input or Organization
Netherlands
INIS RN
16070096
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
DE-EXCITATION; ENERGY SPECTRA; EXPERIMENTAL DATA; E2-TRANSITIONS; GAMMA DECAY; GAMMA SPECTRA; GROUND STATES; HALF-LIFE; HIGH SPIN STATES; ISOMERIC NUCLEI; M1-TRANSITIONS; NILSSON-MOTTELSON MODEL; NUCLEAR DEFORMATION; NUCLEAR STRUCTURE; PARITY; QUASI PARTICLES; ROTATIONAL STATES; SPIN; STRENGTH FUNCTIONS; YTTRIUM 99
Descriptors DEC
ANGULAR MOMENTUM; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; DATA; DECAY; DEFORMATION; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; EXCITED STATES; FUNCTIONS; INFORMATION; INTERMEDIATE MASS NUCLEI; ISOTOPES; MATHEMATICAL MODELS; MULTIPOLE TRANSITIONS; NUCLEAR DECAY; NUCLEAR MODELS; NUCLEI; NUMERICAL DATA; ODD-EVEN NUCLEI; PARTICLE PROPERTIES; RADIOISOTOPES; SPECTRA; YTTRIUM ISOTOPES

Optional Information

Contract/Grant/Project number
Contract W-7405-Eng-48