Radiochemical investigations of nuclear properties. Progress report, October 1, 1975--September 30, 1976. [Summary of research activities at Purdue University]

Technical Report · Wed Sep 01 04:00:00 EDT 1976

DOI:https://doi.org/10.2172/7228606· OSTI ID:7228606

Daly, P J

Investigations of the structure of transitional nuclei in the region below /sup 208/Pb have been continued, and considerable progress has been made in establishing and characterizing the principal high-spin excitation modes in these nuclei. Most of the experiments were performed by in-beam gamma-ray spectroscopy using beams of /sup 3/He and /sup 4/He ions from the Michigan State University cyclotron. The main results of (alpha,xngamma) studies of nine Pt nuclei (A = 186-194) are briefly summarized. The most fruitful new study undertaken has been the first investigation of the semi-magic nuclei /sup 203/Pb, /sup 201/Pb, /sup 199/Pb, /sup 197/Pb and /sup 195/Pb. Strong yrast cascades terminating in nui/sup -1//sub 13/2/ isomeric states have been observed in all five nuclei, many high-spin multiple neutron hole isomers have been identified, and the isomeric decay schemes have been established. A new study of /sup 200/Hg has located the predicted even-spin members of the known 5/sup -/ semidecoupled band; on the other hand, a perplexing problem in interpreting the positive parity level structure of the same nucleus has been encountered. Results of a study of the N-83 nucleus /sup 149/Dy, already published, are also very briefly outlined.

• Research Organization: Purdue Univ., Lafayette, IN (USA)
• DOE Contract Number: EY-76-S-02-1672
• OSTI ID: 7228606
• Report Number(s): COO-1672-70
• Country of Publication: United States
• Language: English

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A=190-219
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
DAYS LIVING RADIOISOTOPES
DYSPROSIUM 149
DYSPROSIUM ISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
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EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HEAVY NUCLEI
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INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOMERIC TRANSITIONS
ISOTOPES
LEAD 195
LEAD 197
LEAD 199
LEAD 201
LEAD 203
LEAD ISOTOPES
MERCURY 200
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MINUTES LIVING RADIOISOTOPES
NUCLEI
PLATINUM ISOTOPES
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RESEARCH PROGRAMS
SECONDS LIVING RADIOISOTOPES
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YRAST STATES