THE $beta$-DECAY OF $sup 239$Np
Journal Article
·
· Proc. Phys. Soc (London)
The beta -spectrum of Np/sup 239/ has been examined using a prolate spheroidal magnetic spectrometer of resolution 2% and transmission 5%, and partial spectra observed having the following end-point energies and intensities: 713 kev (6.5%), 654 kev (4%), 437 kev (48%), 393 kev (13.5%), 332 kev (28%). The half life is found to be 2.34 plus or minus 0.02 days and the total disintegration energy = 724 plus or minus 3 kev. The observations confirm the level scheme proposed by Hollander, and the possibility of a beta -transition of end-point energy less than 100 kev as proposed by Baranov and Shlyagin is examined. The log/sub 10/ ft values of the partial spectra and the nature of the gamma -transitions are discussed in the light of the asymptotic selection rules. (auth)
- Research Organization:
- The University, Edinburgh
- NSA Number:
- NSA-14-000994
- OSTI ID:
- 4218318
- Journal Information:
- Proc. Phys. Soc (London), Journal Name: Proc. Phys. Soc (London) Vol. Vol: 74
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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Related Subjects
BETA DECAY-- BETA PARTICLES-- BETA SPECTROMETERS-- ENERGY-- ENERGY LEVELS-- HALF-LIFE-- MAGNETIC FIELDS-- MEASURED VALUES-- NEPTUNIUM 239-- RESOLUTION-- SPECTRA
BETA DECAY-- BETA PARTICLES-- ENERGY-- ENERGY LEVELS-- GAMMA RADIATION-- HALF-LIFE-- MEASURED VALUES-- NEPTUNIUM 239-- QUANTUM MECHANICS-- SELECTION RULES-- SPECTRA-- TRANSIENTS
PHYSICS
BETA DECAY-- BETA PARTICLES-- ENERGY-- ENERGY LEVELS-- GAMMA RADIATION-- HALF-LIFE-- MEASURED VALUES-- NEPTUNIUM 239-- QUANTUM MECHANICS-- SELECTION RULES-- SPECTRA-- TRANSIENTS
PHYSICS