Decay of /sup 199m,g/Po: isomeric transitions in /sup 199/Po and /sup 199/Bi
Conference
·
OSTI ID:6189662
The M4 isomeric transition (E/sub ..gamma../ = 238 keV) of the 13/2/sup +/ state in /sup 199/Po to the 5/2/sup -/ level, with a half life of 4.17 min, has been observed in mass separated sources. An approx. 72 keV transition in coincidence with the isomeric transition suggests the placement of the 5/2/sup -/ level above the 3/2/sup -/, and when combined with ..cap alpha..-decay Q values, this results in a placement of the 13/2/sup +/ isomeric state in /sup 195/Pb at approx. 200 keV. The transition rate for the M4 transition in /sup 199/Po is similar to those for other M4 transitions in this region. Contrastingly, a M4 transition in /sup 199/Bi, which is highly likely to occur on the basis of systematics of 1/2/sup +/ and 9.2/sup -/ states and a sequence of gamma rays among low spin states observed in our data, is highly retarded. Although, this M4 transition is not observable in our data, an upper limit for its strength is established at approx. 1/1000 the intensity of typical M4 transitions in this region. Possible interpretations of this retardation are discussed.
- Research Organization:
- Oak Ridge National Lab., TN (USA); Tennessee Univ., Knoxville (USA); UNISOR, Oak Ridge, TN (USA)
- DOE Contract Number:
- W-7405-ENG-26; AS05-76ER04936
- OSTI ID:
- 6189662
- Report Number(s):
- CONF-810649-6; ON: DE81024246
- Country of Publication:
- United States
- Language:
- English
Similar Records
Decay of mass-separated /sup 199/Po/sup m/ and /sup 199/Po/sup g/
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Decay of the i13/2 isomeric states in the $sup 199$Po and $sup 201$Po isotopes
Journal Article
·
Thu Jan 31 23:00:00 EST 1985
· Phys. Rev. C; (United States)
·
OSTI ID:6158719
ISOMERIC TRANSITION IN Hg$sup 199$. Report No. 89/I-A
Technical Report
·
Fri May 01 00:00:00 EDT 1959
·
OSTI ID:4192904
Decay of the i13/2 isomeric states in the $sup 199$Po and $sup 201$Po isotopes
Technical Report
·
Sun Dec 30 23:00:00 EST 1973
·
OSTI ID:4934883
Related Subjects
651923* -- Nuclear Properties & Reactions
A=190-219
Experimental-- Energy Levels & Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BISMUTH 199
BISMUTH ISOTOPES
DATA
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ENERGY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
HEAVY NUCLEI
INFORMATION
ISOMERIC TRANSITIONS
ISOTOPES
LIFETIME
M4-TRANSITIONS
MINUTES LIVING RADIOISOTOPES
MULTIPOLE TRANSITIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
POLONIUM 199
POLONIUM ISOTOPES
Q-VALUE
RADIOISOTOPES
A=190-219
Experimental-- Energy Levels & Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BISMUTH 199
BISMUTH ISOTOPES
DATA
DECAY
ELECTRON CAPTURE RADIOISOTOPES
ENERGY
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
EXPERIMENTAL DATA
HEAVY NUCLEI
INFORMATION
ISOMERIC TRANSITIONS
ISOTOPES
LIFETIME
M4-TRANSITIONS
MINUTES LIVING RADIOISOTOPES
MULTIPOLE TRANSITIONS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
POLONIUM 199
POLONIUM ISOTOPES
Q-VALUE
RADIOISOTOPES