DECAY OF Nb$sup 94$ AND Nb$sup 94$m

Journal Article · Fri Jun 01 00:00:00 EDT 1962 · Nuclear Phys.

DOI:https://doi.org/10.1016/0029-5582(62)90008-1· OSTI ID:4817567

Yin, L I; Sund, R E; Arns, R G; Wiedenbeck, M L

Gamma rays in Mo/sup 94/ following the decay of Nb/sup 94/ are studied using coincidence and directional correlation measurements. The 700-kev transition is found to be in coincidence with the 873-kev gamma ray. The intensity of the crossover transition of 1573 kev is found to be less than 0.1% of the 873-kev gamma ray intensity. The directional correlation of the 700-kev-- 873-kev cascade is measured and the corrected expansion coefficients found to be A/sub 2/ = 0.0965 plus or minus 0.0076 and A/sub 4/ = 0.019 plus or minus 0.011. These data indicate spins of 4 and 2 for the 1573-- and 873-kev levels respectively. Gamma rays following the decay of Nb/sup 94m/ are studied. with proportional and scintillation counters. The conversion coefficient alpha of the 42-kev gamma ray in the decay of 6.6min Nb/sup94m/ is measured to be 1600 plus or minus 350 and the branching ratio of the transition from Nb/sup 94m/ to the 873-kev level of Mo/sup 94/ is found to be 0.19 plus or minus 0.03%. The intensity ratio of the 600-kev beta ray to the 1.3-Mev beta ray in the decay of Nb/sup 94m/ is determined to be 3.0 plus or minus 0.6%. These measurements support a spin and parity of 3-- for the isomeric state. (auth)

• Research Organization: Univ. of Michigan, Ann Arbor
• NSA Number: NSA-16-024837
• OSTI ID: 4817567
• Journal Information: Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 34
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BETA DECAY
BRANCHING RATIO
COINCIDENCE METHODS
DECAY
ENERGY LEVELS
GAMMA RADIATION
ISOMERS
MEASURED VALUES
MOLYBDENUM 94
NIOBIUM 94
PARITY
PHYSICS
PROPORTIONAL COUNTERS
SCINTILLATION COUNTERS
SPIN
TRANSIENTS