BETA DECAY OF Bk$sup 250$ AND Bk$sup 24$$sup 9$

Journal Article · Wed Jul 01 04:00:00 EDT 1959 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.115.115· OSTI ID:4223776

Vandenbosch, S E; Diamond, H; Sjoblom, R K; Fields, P R

The beta decay of Bk/sup 250/ was studied with a beta spectrometer. Two beta groups are known for Bk/sup 250/i 725 plus or minus l5 kev (89 plus or minus 1% abundant) and l7610 plus or minus 50 kev (ll plus or minus 1% abundant). Conversion electron lines corresponding to observed ard their intensities measured. The information obtained from crystal spectrometer singles and coincidene measurements was combined with beta spectrometer data to construct a decay scheme for Bk/sup 250/ involving gamma vibrational levels in Cf/sup 250/ analogous to those found in Pu/sup 258/. The beta half life of Bk/sup 250/ is 193.3 plus or minus 0.3 minutes. The electron capture partial half life of Bk/ sup 250/ is estimatcd to be greater than 50 hours. The beta spectrum of Bk/sup 249/ shows an allowed or firstforbidden transition with an end-point energy- of l25 plus or minus 2 kev. (auth)

• Research Organization: Argonne National Lab., Lemont, Ill.
• NSA Number: NSA-13-022921
• OSTI ID: 4223776
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 115; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BERKELIUM 249
BERKELIUM 250
BETA DECAY
BETA PARTICLES
BETA SPECTROMETERS
CALIFORNIUM 250
CAPTURE
COINCIDENCE METHODS
CRYSTALS
EFFICIENCY
ELECTRONS
ENERGY
ENERGY LEVELS
GAMMA RADIATION
HALF-LIFE
INTERNAL CONVERSION
MEASURED VALUES
NUCLEAR MODELS
NUCLEAR THEORY
OSCILLATIONS
PHYSICS AND MATHEMATICS
QUANTUM MECHANICS
SCINTILLATION COUNTERS
SPECTRA
TRANSIENTS
VIBRATIONAL STATE