RADIOACTIVE DECAY OF Os$sup 187$ +He$sup 4$ AND Os$sup 147$ +He$sup 3$
Thesis/Dissertation
·
OSTI ID:4161333
Osmium, enriched to 45.76% in the isotope of mass number 187, was bombarded with a 2- mu a beam of 24-Mev He/sup 4/ particles. The radioactive decay of the resultant sample was investigated using scintillation crystal detectors in conjunction with multi-channel analyzers. Activities of approximates 11 hr, approximates 3 days, and approximates 11 days were observed. By K x-ray identification, the 11-hr and 3-day activities were assigned to Pt and 11-day activity was assigned to Ir. The 11-hr Pt/sup 189/ activity was studied in detail. Energy calibration of the gamma -ray peaks observed in the spectrum of Os/sup 187/ +He/sup 4/ during the predominance of the 11-hr activity was conducted. An energy-level scheme of Ir/sup 189/ consistent with the results of the investigation on the 11-hr activity was proposed. A Nilsson diagram was used to predict the angularmomentum quantum numbers and parities of the ground states of Pt/sup 189/ and Ir/sup 189/ nuclei. The angular momentum quantum numbers and parities of all the other energy levels in the diagram were assigned in comparison with known energy level schemes of Ir/sup 191/ and Ir/sup 193/. Multipole orders of the various transitions were determined in accordance with the spin and parity changes. The probabilities of the transitions were calculated. Results of the coincidence studies conducted during the predominance of the 3-day Pt/sup 191/ in the samples of Os/sup 187/ +He/sup 4/ are also given. They strongly indicate the existence of an energy level at 540 kev for Ir/sup 191/ nucleus. An unsuccessful attempt was made to produce the Pt/sup 189/ activity without the interference of the Pt/sup 191/ activity by bombarding Os/sup 187/ with 2- mu a beam of 18Mev He/sup 3/ particles. (M.P.G.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-18-001085
- OSTI ID:
- 4161333
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
Similar Records
RADIOACTIVE DECAY OF IRIDIUM$sup 18$$sup 9$
PROPERTIES OF NUCLEAR LEVELS IN A NUMBER OF ODD-A NUCLEI (151 /less than or equal to/ A /less than or equal to/ 191
Spin-state determinations and spacings of neutron resonances for /sup 187/Os and /sup 189/Os
Journal Article
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Wed Aug 01 00:00:00 EDT 1962
· Dissertation Abstr.
·
OSTI ID:4778831
PROPERTIES OF NUCLEAR LEVELS IN A NUMBER OF ODD-A NUCLEI (151 /less than or equal to/ A /less than or equal to/ 191
Journal Article
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Wed Oct 31 23:00:00 EST 1962
· Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D
·
OSTI ID:4776503
Spin-state determinations and spacings of neutron resonances for /sup 187/Os and /sup 189/Os
Journal Article
·
Wed Sep 01 00:00:00 EDT 1976
· Phys. Rev., C; (United States)
·
OSTI ID:7342529
Related Subjects
COINCIDENCE METHODS
COLLECTIVE MODEL
DECAY
ENERGY LEVELS
ENRICHMENT
HALF-LIFE
HELIUM 3
HELIUM 4
ION BEAMS
IRIDIUM
IRIDIUM 189
IRIDIUM 191
IRIDIUM 193
MEV RANGE
MOMENTUM
NILSSON-MOTTELSON MODEL
NUCLEAR MODELS
NUCLEAR REACTIONS
OSMIUM 187
PARITY
PHYSICS
PLATINUM
PLATINUM 189
PLATINUM 191
PULSE ANALYZERS
RADIOACTIVITY
RADIOISOTOPES
SCINTILLATION COUNTERS
SPIN
COLLECTIVE MODEL
DECAY
ENERGY LEVELS
ENRICHMENT
HALF-LIFE
HELIUM 3
HELIUM 4
ION BEAMS
IRIDIUM
IRIDIUM 189
IRIDIUM 191
IRIDIUM 193
MEV RANGE
MOMENTUM
NILSSON-MOTTELSON MODEL
NUCLEAR MODELS
NUCLEAR REACTIONS
OSMIUM 187
PARITY
PHYSICS
PLATINUM
PLATINUM 189
PLATINUM 191
PULSE ANALYZERS
RADIOACTIVITY
RADIOISOTOPES
SCINTILLATION COUNTERS
SPIN