Nuclear structure of tellurium 133 via beta decay and shell model calculations in the doubly magic tin 132 region. [J,. pi. , transition probabilities, neutron and proton separation, g factors]

Technical Report · Wed Aug 01 00:00:00 EDT 1979

DOI:https://doi.org/10.2172/5874953· OSTI ID:5874953

Lane, S M

An experimental investigation of the level structure of /sup 133/Te was performed by spectroscopy of gamma-rays following the beta-decay of 2.7 min /sup 133/Sb. Multiscaled gamma-ray singles spectra and 2.5 x 10/sup 7/ gamma-gamma coincidence events were used in the assignment of 105 of the approximately 400 observed gamma-rays to /sup 133/Sb decay and in the construction of the /sup 133/Te level scheme with 29 excited levels. One hundred twenty-two gamma-rays were identified as originating in the decay of other isotopes of Sb or their daughter products. The remaining gamma-rays were associated with the decay of impurity atoms or have as yet not been identified. A new computer program based on the Lanczos tridiagonalization algorithm using an uncoupled m-scheme basis and vector manipulations was written. It was used to calculate energy levels, parities, spins, model wavefunctions, neutron and proton separation energies, and some electromagnetic transition probabilities for the following nuclei in the /sup 132/Sn region: /sup 128/Sn, /sup 129/Sn, /sup 130/Sn, /sup 131/Sn, /sup 130/Sb, /sup 131/Sb, /sup 132/Sb, /sup 133/Sb, /sup 132/Te, /sup 133/Te, /sup 134/Te, /sup 134/I, /sup 135/I, /sup 135/Xe, and /sup 136/Xe. The results are compared with experiment and the agreement is generally good. For non-magic nuclei: the lg/sub 7/2/, 2d/sub 5/2/, 2d/sub 3/2/, 1h/sub 11/2/, and 3s/sub 1/2/ orbitals are available to valence protons and the 2d/sub 5/2/, 2d/sub 3/2/, 1h/sub 11/2/, and 3s/sub 1/2/ orbitals are available to valence neutron holes. The present CDC7600 computer code can accommodate 59 single particle states and vectors comprised of 30,000 Slater determinants. The effective interaction used was that of Petrovich, McManus, and Madsen, a modification of the Kallio-Kolltveit realistic force. Single particle energies, effective charges and effective g-factors were determined from experimental data for nuclei in the /sup 132/Sn region. 116 references.

• Research Organization: California Univ., Livermore (USA). Lawrence Livermore Lab.
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5874953
• Report Number(s): UCRL-52825
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALGORITHMS
ANGULAR MOMENTUM
ANTIMONY 130
ANTIMONY 131
ANTIMONY 132
ANTIMONY 133
ANTIMONY ISOTOPES
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
BRANCHING RATIO
C CODES
COINCIDENCE METHODS
COMPUTER CODES
COUNTING TECHNIQUES
DATA
DATA FORMS
DAYS LIVING RADIOISOTOPES
DECAY
E2-TRANSITIONS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
FUNCTIONS
GAMMA SPECTRA
GRAPHS
GYROMAGNETIC RATIO
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IODINE 134
IODINE 135
IODINE ISOTOPES
ISOLATED VALUES
ISOMERIC TRANSITION ISOTOPES
ISOMERIC TRANSITIONS
ISOTOPES
M1-TRANSITIONS
M4-TRANSITIONS
MATHEMATICAL LOGIC
MATHEMATICAL MODELS
MATRIX ELEMENTS
MINUTES LIVING RADIOISOTOPES
MULTIPOLE TRANSITIONS
NUCLEAR MODELS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PARITY
PARTICLE PROPERTIES
RADIOISOTOPES
SHELL MODELS
SLATER METHOD
SPECTRA
SPIN
STABLE ISOTOPES
TELLURIUM 132
TELLURIUM 133
TELLURIUM 134
TELLURIUM ISOTOPES
TENSORS
TIN 128
TIN 129
TIN 131
TIN 132
TIN ISOTOPES
VECTORS
WAVE FUNCTIONS
XENON 135
XENON 136
XENON ISOTOPES