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DECAY OF $sub 60$Nd$sup 151$(12 min)

Journal Article · · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
;

The decay of Nd/sup 151/(12 min) is characterized by beta emission to excited states in Pm/sup 151/. This activity was investigated by means of the Argonne 256-channel scintillation coincidence spectrometer and photographic internal-conversion-electron spectrographs. Sources were prepared by neutron irradiation of neodymium oxide, enriched in Nd/sup 150/, in the Argonne reactor CP-5. The presence of six beta-ray branches is deduced; four of these were observed experimentally by means of absorption methods. Thirty gamma transitions are reported. Twenty-seven of these and the six beta-ray groups are fitted into a decay scheme which indicates the presence of excited states in Pm/sup 151/ at 0.1172, 1.87, and 2.17 Mev. The total energy difference between the Nd/sup 15/ parent and the Pm/sup 151/ ground state is found to be (2.4 plus or minus 0.1) Mev. The low-lying levels in Pm/sup 151/ are discussed with particular reference to the possible existence of a rotational series based on the ground state. (auth)

Research Organization:
Argonne National Lab., Lemont, Ill.
NSA Number:
NSA-13-022934
OSTI ID:
4201260
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Physical Review (U.S.) Superseded in part by Phys.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 D, Journal Name: Physical Review (U.S.) Superseded in part by Phys.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

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Related Subjects

ABSORPTION
BETA DECAY
BETA PARTICLES
BETA SPECTROMETERS
COINCIDENCE METHODS
DECAY
ELECTRONS
ENERGY
ENERGY LEVELS
ENRICHMENT
EXCITATION
GAMMA RADIATION
HALF-LIFE
INTERNAL CONVERSION
IRRADIATION
MEASURED VALUES
NEODYMIUM 150
NEODYMIUM 151
NEODYMIUM OXIDES
NEUTRONS
NUCLEAR MODELS
PHOTOGRAPHIC FILM DETECTORS
PHYSICS AND MATHEMATICS
PROMETHIUM 151
REACTORS
ROTATION
ROTATIONAL STATE
SCINTILLATION COUNTERS
SPECTRA
TRANSIENTS