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Iosmeric transitions in /sup 98/Tc

Journal Article · · Phys. Rev., C; (United States)
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A search for short-life isomers in /sup 98/Tc has been made with the reaction /sup 98/Mo(p,n) /sup 98/Tc and a pulsed proton beam. Three new isomeric transitions have been identified in addition to the known one of 14.6-..mu..s half-life. The mean lives measured for the three ..gamma.. rays of 47.8, 57.0, and 65.2 keV come out to be tau/sub m/ = (11.6 +- 0.3), (11.6 +- 0.9), (11.4 +- 2.8) ns, respectively. These transitions have been attributed to the decay of the 138.6-keV level. Two new levels at 73.4 and at 90.8 keV have been identified and are suggested as possible candidates for the 14.6-..mu..s isomer. An upper limit (tau/sub m/ < 2 ns) has also been obtained for the mean life of the levels at 65.4, 81.6, 152.0, 190.3, and 203.9 keV.
Research Organization:
Istituto di Fisica dell'Universita, Firenze, Italy
OSTI ID:
6734883
Journal Information:
Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 18:1; ISSN PRVCA
Country of Publication:
United States
Language:
English

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Related Subjects

651723* -- Nuclear Properties &amp; Reactions
A=90-149
Experimental-- Energy Levels &amp; Transitions-- (-1987)
651725 -- Nuclear Properties &amp; Reactions
A=90-149
Experimental-- Nuclear Reactions &amp; Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGE-EXCHANGE REACTIONS
CHARGED-PARTICLE REACTIONS
COINCIDENCE SPECTROMETRY
DECAY
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
GAMMA SPECTRA
HADRON REACTIONS
HALF-LIFE
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITIONS
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 01-10
MOLYBDENUM 98 TARGET
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-ODD NUCLEI
PROTON REACTIONS
RADIOISOTOPES
SHELL MODELS
SPECTRA
TARGETS
TECHNETIUM 98
TECHNETIUM ISOTOPES
YEARS LIVING RADIOISOTOPES