Study of the systematics of low-lying levels in nuclei in the mass region A approx. = 80 with a NIM controlled rabbit system
Heavy ion reactions were used to produce nuclei away from beta stability in the mass region A approx. = 80. The irradiated targets were transported to an isolated detector site using a rapid target transfer (Rabbit) system to aid in the study of weak products produced in these reactions and to protect the Ge(Li) detectors used in the experiments. The Rabbit system was used in lifetime, gamma-gamma coincidence measurements and beta-gamma coincidence measurements. Lifetime measurements were used to study the decay of /sup 79/Sr produced in the reaction /sup 54/Fe + /sup 28/Si at 90 MeV (lab). The lifetime of the ground state of /sup 79/Sr was measured and a positron feeding to the 39.3-keV level in /sup 79/Rb was established. Lifetime measurements were also used to study the decay of /sup 81m/Rb, which is produced in the reaction /sup 68/Zn + /sup 16/O at 56 MeV (lab). A positron feeding from the isomeric level in /sup 81/Rb to the 49.6-keV level in /sup 81/Kr was established. In addition, lifetime measurements were used to help identify gamma rays produced in the reactions /sup 68/Zn + /sup 16/O and /sup 70/Ge + /sup 16/O at 56 MeV (lab). The reaction /sup 68/Zn + /sup 16/O was also studied with the gamma-gamma coincidence technique. Extensive level schemes were constructed and new levels were established for the decays of /sup 81/Rb and /sup 81/Sr. The beta-gamma coincidence technique was used in the study of the reaction /sup 70/Ge + /sup 16/O to investigate the ground state and isomeric levels of /sup 83/Y and /sup 84/Y. The order and relative separation of these levels were tentatively established for /sup 83/Y. The Q-value and J/sup ..pi../ of the ground state were established and tentative J/sup ..pi../ assignments were made for the isomeric levels in /sup 84/Y.
- Research Organization:
- Florida State Univ., Tallahassee (USA)
- OSTI ID:
- 6143027
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
A=59-89
Experimental-- Energy Levels & Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALI METAL ISOTOPES
ALKALINE EARTH ISOTOPES
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
BETA SPECTRA
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
DATA
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ENERGY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
GAMMA SPECTRA
GROUND STATES
HEAVY ION REACTIONS
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOMERIC TRANSITIONS
ISOTOPES
KRYPTON 81
KRYPTON ISOTOPES
LIFETIME
MINUTES LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
PARTICLE PROPERTIES
Q-VALUE
RADIOISOTOPES
RUBIDIUM 79
RUBIDIUM 81
RUBIDIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTRA
SPIN
STRONTIUM 79
STRONTIUM 81
STRONTIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
YTTRIUM 83
YTTRIUM 84
YTTRIUM ISOTOPES