The energy level structures of even-even tellurium and odd-odd iodine and antimony nuclei: [sup 114]Te, [sup 116]Te, [sup 114]I, and [sup 114]Sb

Thesis/Dissertation · Wed Jan 01 04:00:00 EST 1992

OSTI ID:7264022

Zimmerman, B E

Nuclear structure studies were performed on the even-even nuclides [sup 114,116]Te following the [beta][sup +]/EC decay of [sup 114,116]I, respectively, to investigate the possible role of particle-hole intruder structures previously observed in other even-even nuclei near the = 50 shell. Studies were also carried out for odd-odd [sup 114m]I and the [beta][sup +]/EC decay of [sup 114]Te, respectively, to characterize the low-energy proton-neutron multiplet structures of these nuclei. Gamma-ray and electron singles data, gamma-gamma and electron-gamma coincidence data, as well as multiscaled gamma singles data were collected at the on-line mass separator UNISOR at Oak Ridge National Laboratory. The magnetic moment of the ground state of [sup 114]Sb was measured by an integral online low-temperature nuclear orientation experiment carried out at the UNISOR Nuclear Orientation Facility. Evidence for intruder admixtures was found for both [sup 114]Te and [sup 116]Te, although it is apparent that the influence of these configurations is decreasing with decreasing neutron number below the middle of the neutron shell. Among the new states proposed for these nuclei are the entire second phonon multiplet for both [sup 114]Te and [sup 116]Te, and most of the members of the third phonon quintuplet in [sup 114]Te. The magnetic dipole moment of the ground state of [sup 114]Sb was measured to be 1.72(*) n.m. an indicates an appreciable change in the ground state configuration from a nearly pure [pi]d[sub 5/2][nu]s[sub 1/2] configuration to one that is substantially admixed with the [pi]d[sub 5/2][nu]g[sub 7/2] configuration. Ten levels below 500 keV and 12 levels above 500 keV are proposed based on spectroscopic studies. The number and position of the low-energy levels are consistent with those expected from the available single-particle couplings.

• Research Organization: Maryland Univ., College Park, MD (United States)
• OSTI ID: 7264022
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400702 -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANTIMONY 114
ANTIMONY ISOTOPES
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
EVEN-EVEN NUCLEI
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
IODINE 114
IODINE ISOTOPES
ISOMERIC NUCLEI
ISOTOPES
MAGNETIC MOMENTS
MINUTES LIVING RADIOISOTOPES
NUCLEAR DECAY
NUCLEAR MAGNETIC MOMENTS
NUCLEAR PROPERTIES
NUCLEAR STRUCTURE
NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
TELLURIUM 114
TELLURIUM 116
TELLURIUM ISOTOPES