States in N = 79 /sup 139/Nd populated in the decay of /sup 139/Pm
The structure of /sup 139/Nd is investigated through the ..beta../sup +/ decay of /sup 139/Pm, whose decay half-life is measured to be 4.15+-0.05 min. A level scheme comprising 19 excited states and 47 transitions is constructed by means of ..beta../sup +/, ..gamma.. ray, and electron spectroscopy measurements. By use of internal conversion electron measurements and the deduced ..beta.. decay ft values, J/sup ..pi../ assignments are made to states in /sup 139/Nd and to the ground state of /sup 139/Pm. From the ..beta.. end point energy measurements, the total decay energy of /sup 139/Pm has been established as 4.45+-0.08 MeV. The structure of /sup 139/Nd is discussed in terms of the systematics of the odd-A, N = 79 isotones. Decay energy systematics of the odd-A, N = 78 and 80 isotones are also discussed.
- Research Organization:
- Foster Radiation Laboratory, McGill University, Montreal, Quebec, Canada
- OSTI ID:
- 7316494
- Journal Information:
- Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 15:2; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BASIC INTERACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
CONVERSION
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ELECTRONS
ELEMENTARY PARTICLES
ENERGY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
FERMIONS
FT VALUE
GAMMA SPECTRA
GROUND STATES
HALF-LIFE
HOURS LIVING RADIOISOTOPES
INTERACTIONS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION
ISOTOPES
LEPTONIC DECAY
LEPTONS
NEODYMIUM 139
NEODYMIUM ISOTOPES
NUCLEI
ODD-EVEN NUCLEI
PARITY
PARTICLE DECAY
PARTICLE PROPERTIES
PROMETHIUM 139
PROMETHIUM ISOTOPES
Q-VALUE
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SPECTRA
SPIN
WEAK INTERACTIONS
WEAK PARTICLE DECAY