DECAY OF GADOLINIUM-159

Journal Article · Wed Oct 01 04:00:00 EDT 1958 · Physical Review (U.S.) Superseded in part by Phys.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.112.262· OSTI ID:4295487

Malik, S S; Nath, N; Mandeville, C E

S>The decay of Gd/sup 159/ has been studied with the aid of a thin moagnetic lens beta-ray spectromoeter and coincident scintillation spectromoeters. Two principal betaray groups, with the end-point energies 580 plus or minus 10 and 940 plus or minus 15 kev have been observed to decay with the 18-hour half- life of Gd/sup 159/, revealing energy levels in the residual nucleus, Tb/sup 159/ , at 56, 136, and 361 kev. The coincidence measurements gave evidence of a third beta component, with the end-point energy of 880 plus or minus 20 kev, coincident with the 56-kev gamma ray. The intensities of the three components (580 plus or minus lO, 880 plus or minus 20, and 940 plus or minus 15 kev) have been estimated to be approximately 20, 6, and 74%, respectively. Internal conversion coefficient measurements indicated the 361-kev gamma ray to be a mixed (Ml and E2) transition. (auth)

• Research Organization: Franklin Inst., Swarthmore, Penna.
• NSA Number: NSA-13-002474
• OSTI ID: 4295487
• Journal Information: Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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: 112; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

BETA DECAY
BETA SPECTROMETERS
COINCIDENCE METHODS
ELECTRIC FIELDS
ENERGY
ENERGY LEVELS
GADOLINIUM 159
GAMMA SPECTROMETERS
INTERNAL CONVERSION
MAGNETIC FIELDS
MEASURED VALUES
PHYSICS AND MATHEMATICS
SCINTILLATION COUNTERS
TERBIUM 159
TRANSIENTS