Neutron deficient platinum and osmium isotopes produced in the /sup 32/S+/sup 144/Sm fusion reaction
Journal Article
·
· Phys. Rev. C; (United States)
A recoil-mass selector has been used to detect evaporation residues formed by neutron emission from the compound nucleus /sup 176/Pt produced by bombarding /sup 144/Sm with 139.5- to 201-MeV /sup 32/S. The neutron-deficient platinum isotopes /sup 172/Pt (4n emission) and /sup 171/Pt (5n emission) were identified, among others, as well as their alpha daughters, /sup 168/Os and /sup 167/Os. The alpha-decay energies and half-lives are /sup 172/Pt: 6.09 MeV, 0.09 sec; /sup 171/Pt: 6.450 MeV, 0.02 sec, /sup 168/Os: 5.670 MeV, 2.2 sec; and /sup 167/Os: 5.843 MeV, 0.8 sec. Alpha branching ratios of these and other daughters were also measured. An alpha line at 6.547, observed at beam energies above 190 MeV, was tentatively assigned to /sup 170/Pt (6n emission) and at energies around 140 MeV indications of 1n emission were observed. The optimum cross sections for 1n, 2n, 3n, 4n, 5n, and 6n emissions in that order are approximately 0.003, 0.09, 1.5, 0.15, 0.02, and 0.002 millibarns. Formation of iridium isotopes by 2n1p evaporation, etc., was also observed, but is not discussed in detail in this paper.
- Research Organization:
- Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
- OSTI ID:
- 5228359
- Journal Information:
- Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 25:4; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
Similar Records
New proton radioactivities {sup 165,166,167}Ir and {sup 171}Au
Excitation functions for evaporation residues from the /sup 37/Cl+/sup 169/Tm fusion reaction
NUCLEAR ENERGY LEVEL SCHEMES AND SYSTEMATICS IN THE HEAVY RARE-EARTH REGION
Journal Article
·
Thu May 01 00:00:00 EDT 1997
· Physical Review, C
·
OSTI ID:496847
Excitation functions for evaporation residues from the /sup 37/Cl+/sup 169/Tm fusion reaction
Journal Article
·
Wed Dec 31 23:00:00 EST 1980
· Phys. Rev., C; (United States)
·
OSTI ID:6730377
NUCLEAR ENERGY LEVEL SCHEMES AND SYSTEMATICS IN THE HEAVY RARE-EARTH REGION
Thesis/Dissertation
·
Sat Dec 31 23:00:00 EST 1960
·
OSTI ID:4791730
Related Subjects
651722 -- Nuclear Properties & Reactions
A=90-149
Experimental-- Radioactive Decay-- (-1987)
651725* -- Nuclear Properties & Reactions
A=90-149
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
BRANCHING RATIO
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
CROSS SECTIONS
DECAY
ENERGY RANGE
ENERGY SPECTRA
EVAPORATION MODEL
FUSION REACTIONS
HALF-LIFE
HEAVY ION REACTIONS
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR MODELS
NUCLEAR REACTIONS
OSMIUM ISOTOPES
PLATINUM ISOTOPES
SAMARIUM 144 TARGET
SPECTRA
SULFUR 32 REACTIONS
TARGETS
A=90-149
Experimental-- Radioactive Decay-- (-1987)
651725* -- Nuclear Properties & Reactions
A=90-149
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY
BRANCHING RATIO
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
CROSS SECTIONS
DECAY
ENERGY RANGE
ENERGY SPECTRA
EVAPORATION MODEL
FUSION REACTIONS
HALF-LIFE
HEAVY ION REACTIONS
ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
NUCLEAR MODELS
NUCLEAR REACTIONS
OSMIUM ISOTOPES
PLATINUM ISOTOPES
SAMARIUM 144 TARGET
SPECTRA
SULFUR 32 REACTIONS
TARGETS