NEUTRON-DEFICIENT IRIDIUM ISOTOPES
A study was made of the isotopes of iridium which are produced from natural rhenium by irradiations with alpha partiches in the energy range 25 to 45 Mev. The known iridium isotopes of masses 190, 189, and 188 were observed, and in addition I/sup 187/, Ir/sup 186/, and I/sup 185/ were identified by meaas of the threshold energy for their production. Analyses are based upon scintillation spectra and conversion electron spectra taken with highresolution permanent-magnet spectrographs. The interesting situation is encountered in which the three isotopes Ir/sup 187/, Ir/sup 186/, and Ir/sup 185/ all have very similar halflives: Ir/sup 187/, 13 hours; Ir/sup 186/, 16 hours; and Ir/sup 185/, 15 hours. A preliminary study of the radiations from the odd mass isotopes was made, and also some new transitions in Ir/sup 186/, Ir/sup 286/, and Ir/sup 190/ are reported. (auth)
- Research Organization:
- Univ. of California, Berkeley
- NSA Number:
- NSA-13-000885
- OSTI ID:
- 4305107
- Journal Information:
- Nuclear Phys., Journal Name: Nuclear Phys. Vol. Vol: 8
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
New radioactive isotopes for iridium
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Thu Mar 02 23:00:00 EST 1950
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OSTI ID:402060
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OSTI ID:4087233
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Fri Jun 15 00:00:00 EDT 1962
· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
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OSTI ID:4798847
Related Subjects
ALPHA BEAMS
BETA SPECTROMETERS
ELECTRONS
ENERGY
ENERGY LEVELS
ENERGY RANGE
HALF-LIFE
INTERNAL CONVERSION
IRIDIUM 185
IRIDIUM 186
IRIDIUM 187
IRIDIUM 188
IRIDIUM 189
IRIDIUM 190
IRIDIUM ISOTOPES
MAGNETIC FIELDS
MEASURED VALUES
PHYSICS AND MATHEMATICS
RADIATION DETECTORS
RHENIUM
SCINTILLATIONS
SPECTRA
THRESHOLD DETECTORS
BETA SPECTROMETERS
ELECTRONS
ENERGY
ENERGY LEVELS
ENERGY RANGE
HALF-LIFE
INTERNAL CONVERSION
IRIDIUM 185
IRIDIUM 186
IRIDIUM 187
IRIDIUM 188
IRIDIUM 189
IRIDIUM 190
IRIDIUM ISOTOPES
MAGNETIC FIELDS
MEASURED VALUES
PHYSICS AND MATHEMATICS
RADIATION DETECTORS
RHENIUM
SCINTILLATIONS
SPECTRA
THRESHOLD DETECTORS