New isotope /sup 80/Y, and the decays of /sup 79/Sr, /sup 81/Y, and /sup 82/Y

Journal Article · Wed Jul 01 04:00:00 EDT 1981 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.24.260· OSTI ID:6190130

Lister, C J; Haustein, P E; Alburger, D E; Olness, J W

The helium-jet recoil transfer technique has been used to study the decays of /sup 79/Sr, /sup 80/Y, /sup 81/Y, and /sup 82/Y, produced by /sup 58/Ni(/sup 24/Mg,2pn), /sup 58/Ni(/sup 24/Mg,pn), /sup 58/Ni(/sup 25/Mg,pn), and /sup 60/Ni(/sup 24/Mg,pn) reactions, respectively. Decay properties of these four radioactivities have been deduced from the analysis of extensive singles and multiparameter spectroscopic measurements. The low lying level structure of /sup 80/Sr, as revealed by the decay of /sup 80/Y, can be reproduced through calculations of the interacting-boson-approximation model which place /sup 80/Sr at or near the O(6) limit. Positron end-point measurements (deduced from (..beta..,..gamma..) coincidence studies) have been used to determine decay energies for each of these nuclides. Nuclidic mass excesses inferred from these data show progressively larger deviations from the predictions of currently available mass models for the more neutron-deficient Y isotopes as the N = Z line is approached. It is suggested that this may reflect the influence of nuclear deformation of these isotopes on the mass surface in the vicinity of N = Z = 40.

• Research Organization: Brookhaven National Laboratory, Upton, New York 11973
• OSTI ID: 6190130
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 24:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
BARYONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
COMPOUND-NUCLEUS REACTIONS
DATA
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FERMIONS
FT VALUE
HADRONS
HALF-LIFE
HEAVY ION REACTIONS
INFORMATION
INTERACTING BOSON MODEL
INTERMEDIATE MASS NUCLEI
ISOTOPES
MAGNESIUM 24 REACTIONS
MAGNESIUM 25 REACTIONS
MASS
MATHEMATICAL MODELS
MINUTES LIVING RADIOISOTOPES
NEUTRONS
NICKEL 58 TARGET
NICKEL 60 TARGET
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PARITY
PARTICLE PROPERTIES
PROTONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SHELL MODELS
STRONTIUM 79
STRONTIUM ISOTOPES
TARGETS
YTTRIUM 80
YTTRIUM 81
YTTRIUM 82
YTTRIUM ISOTOPES