SHAPE OF BETA SPECTRA OF ONCE FORBIDDEN TRANSITIONS IN THE DECAYS OF Ga$sup 72$, La$sup 140$, Eu$sup 152$, Eu$sup 154$, AND Sb$sup 12$$sup 4$

Journal Article · Mon Aug 15 00:00:00 EDT 1960 · Physical Review (U.S.) Superseded in part by Phys.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.119.1308· OSTI ID:4149173

Langer, L M; Smith, D R

Magnetic spectrometer studies were made on the beta spectra of Ga/sup 72/ , La/sup 140/, E/sup 152/, Eu/sup 154/, and Sb/sup 124/. Th e highest energy beta group of each of these transitions has an abnormally long comparative half life and probably is a once forbidden decay from a 3-- initial state to a 2+ final state. The highest energy beta spectrum was found to have a nonstatistical, nonunique shape. On the assumption that the B/sub ij/ matrix element dominates the decay, the experimental shape factors were fitted empirically by C = q/sup 2/ + to 15, 10, 5, 20, and 15 for Ga/sup 72/, La/sup 140/ , Eu/sup 152/, Eu/sup 154/, and Sb/sup 124/, respectively. (auth)

• Research Organization: Indiana Univ., Bloomington
• NSA Number: NSA-14-023611
• OSTI ID: 4149173
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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, Vol. Vol: 119; Other Information: Orig. Receipt Date: 31-DEC-60
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

PHYSICS
ANTIMONY 124
BETA DECAY
BETA SPECTROMETERS
ENERGY LEVELS
EUROPIUM 152
EUROPIUM 154
GALLIUM 72
HALF-LIFE
LANTHANUM 140
MAGNETS
MATRICES
MEASURED VALUES
NUMERICALS
PARITY
SPECTRA
SPIN
TRANSIENTS