Decay studies of a long lived high spin isomer of /sup 210/Bi

Technical Report · Sun Aug 01 00:00:00 EDT 1976

DOI:https://doi.org/10.2172/7329679· OSTI ID:7329679

Tuggle, D G

A source of approximately 30 ..mu..g of pure (> 90%) /sup 210m/Bi (J..pi.. = 9-) was prepared by irradiating /sup 209/Bi in a nuclear reactor. After chemical separations to remove /sup 210/Po from the irradiated bismuth sample were completed, the /sup 210/Bi was electromagnetically separated from the /sup 209/Bi by a series of two isotope separations to create the source mentioned above. This source was then used to conduct alpha, conversion electron, gamma, gamma-gamma coincidence, and alpha-gamma coincidence spectroscopic studies of the decay of /sup 210m/Bi. The partial half life for the alpha decay of /sup 210m/Bi was measured as 3.0 x 10/sup 6/ yr. A lower limit of 10/sup 13/ years was set for the partial half life for the decay of /sup 210m/Bi to /sup 210/Po. Alpha decay of /sup 210m/Bi to 8 excited states of /sup 206/Tl was observed. A lower limit of 10/sup -4/% was set for the branching ratio of the parity forbidden alpha decay of /sup 210/Bi to the /sup 206/Ti ground state. Theoretical decay rates for the alpha decays of /sup 210m/Bi, /sup 210/Bi, /sup 211/Po, and /sup 211m/Po were calculated using the method developed by Hans Mang. A comparison of the calculated and experimentally measured alpha decay rates of /sup 210m/Bi showed good agreement for the relative alpha decay rates.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7329679
• Report Number(s): LBL-4460; TRN: 77-006970
• Resource Relation: Other Information: Thesis
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BISMUTH 210
ALPHA DECAY
THALLIUM 206
ENERGY LEVELS
BRANCHING RATIO
HALF-LIFE
HIGH SPIN STATES
ISOMERIC NUCLEI
WAVE FUNCTIONS
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BISMUTH ISOTOPES
DAYS LIVING RADIOISOTOPES
DECAY
FUNCTIONS
HEAVY NUCLEI
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NUCLEI
ODD-ODD NUCLEI
PARTICLE DECAY
RADIOISOTOPES
THALLIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
651922* - Nuclear Properties & Reactions
A=190-219
Experimental- Radioactive Decay- (-1987)
651923 - Nuclear Properties & Reactions
A=190-219
Experimental- Energy Levels & Transitions- (-1987)