Decay of mass-separated 3.0min 195gBi to levels in 195Pb and shape coexistence in the neutron-deficient odd-mass Pb isotopes
Creators
- 1. Georgia Inst. of Tech., Atlanta, GA (USA). School of Chemistry and Biochemistry
- 2. Georgia Inst. of Tech., Atlanta, GA (USA). School of Physics
- 3. Oak Ridge Associated Universities, TN (USA)
- 4. Tennessee Univ., Knoxville, TN (USA). Dept. of Physics
- 5. Katholieke Univ., Leuven (Belgium). LISOL
Description
The radioactive decay of mass-separated 3.0 m 195gBi to 195Pb has been studied with the UNISOR and LISOL facilities. Time-sequenced spectra of γ-rays, X-rays, and conversion electrons have been obtained, together with γγt, γXt, eγt, and eXt coincidence data. From this information, a decay scheme has been constructed consisting of 23 excited states and 34 transitions in 195Pb. Transitions with E0 multipole admixtures, indicative of shape coexistence, have been found to de-excite positive-parity levels at 1093, 1329, and 1380 keV. The beta-decay energy of the 195Bi ground state is deduced to be QEC=4800+600-550 keV based on the measurement of γ-ray-gated K/β+ ratios. The excitation energy of the i13/2 isomer in 195Pb has been determined to be 203±4 keV from the α-decays of 199m,gPo. (orig.)
Additional details
Publishing Information
- Journal Title
- Nuclear Physics, A
- Journal Volume
- 530
- Journal Issue
- 2
- Series
- Nucl. Phys., A.
- Journal Page Range
- 401-419
- ISSN
- 0375-9474
- CODEN
- NUPAB
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Netherlands
- INIS RN
- 23003377
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- ALPHA DECAY; ALPHA SPECTRA; BETA-PLUS DECAY; BISMUTH 195; BRANCHING RATIO; DE-EXCITATION; DELAYED GAMMA RADIATION; ELECTRON CAPTURE DECAY; ELECTRON SPECTRA; ENERGY SPECTRA; EXCITED STATES; EXPERIMENTAL DATA; E0-TRANSITIONS; E1-TRANSITIONS; E2-TRANSITIONS; GAMMA CASCADES; GAMMA SPECTRA; GROUND STATES; HIGH SPIN STATES; ISOMERIC NUCLEI; K CONVERSION; L CONVERSION; LEAD 195; M CONVERSION; MULTIPOLARITY; M1-TRANSITIONS; M4-TRANSITIONS; NEUTRON-DEFICIENT ISOTOPES; NUCLEAR DEFORMATION; PARITY; POLONIUM 199; Q-VALUE; ROTATIONAL STATES; SPIN
- Descriptors DEC
- ALPHA DECAY RADIOISOTOPES; ANGULAR MOMENTUM; BETA DECAY; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; BISMUTH ISOTOPES; CONVERSION; DATA; DECAY; DEFORMATION; ELECTROMAGNETIC RADIATION; ELECTRON CAPTURE RADIOISOTOPES; ENERGY; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; EVEN-ODD NUCLEI; GAMMA RADIATION; HEAVY NUCLEI; INFORMATION; INTERNAL CONVERSION; INTERNAL CONVERSION RADIOISOTO; IONIZING RADIATIONS; ISOTOPES; LEAD ISOTOPES; MINUTES LIVING RADIOISOTOPES; MULTIPOLE TRANSITIONS; NUCLEAR CASCADES; NUCLEAR DECAY; NUCLEI; NUMERICAL DATA; ODD-EVEN NUCLEI; PARTICLE PROPERTIES; POLONIUM ISOTOPES; RADIATIONS; RADIOISOTOPES; SPECTRA