Upper limits for the /sup 27/Al + /sup 16/O and /sup 93/Nb + /sup 16/O radiative-capture cross sections
Journal Article
·
· Phys. Rev., C; (United States)
Thick targets of high purity aluminium and niobium were bombarded with /sup 16/O ions in the energy range 50--65 MeV. The yields of reaction products were obtained off-line using a Ge(Li) detector to observe residual ..gamma.. activities. Ungated ..gamma.. spectra in coincidence with pairs of 511 keV annihilation quanta, observed in an array of four 7.5 x 7.5 cm NaI(T1) detectors, were recorded. Upper limits of 0.2 ..mu..b and 0.1..mu..b were obtained for the /sup 27/Al(/sup 16/O,..gamma..)/sup 43/Sc and /sup 93/Nb(/sup 16/O,..gamma..)/sup 109/In radiative capture cross sections, respectively. These limits are compared to previously reported data and to the results of statistical model calculations. It is concluded that some previously reported total heavy-ion radiative capture results may be in error and tentative explanations for this are offered.
- Research Organization:
- Laboratory for Nuclear Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
- OSTI ID:
- 6415419
- Journal Information:
- Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 18:6; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
651425* -- Nuclear Properties & Reactions
A=20-38
Experimental-- Nuclear Reactions & Scattering-- (-1987)
651725 -- Nuclear Properties & Reactions
A=90-149
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTIVATION ANALYSIS
ALUMINIUM 27 TARGET
CAPTURE
CHARGED-PARTICLE REACTIONS
CHEMICAL ANALYSIS
CROSS SECTIONS
ENERGY RANGE
HEAVY ION REACTIONS
INELASTIC SCATTERING
MEV RANGE
MEV RANGE 10-100
NIOBIUM 93 TARGET
NUCLEAR REACTION ANALYSIS
NUCLEAR REACTIONS
OXYGEN 16 REACTIONS
SCATTERING
TARGETS
TOTAL CROSS SECTIONS
A=20-38
Experimental-- Nuclear Reactions & Scattering-- (-1987)
651725 -- Nuclear Properties & Reactions
A=90-149
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTIVATION ANALYSIS
ALUMINIUM 27 TARGET
CAPTURE
CHARGED-PARTICLE REACTIONS
CHEMICAL ANALYSIS
CROSS SECTIONS
ENERGY RANGE
HEAVY ION REACTIONS
INELASTIC SCATTERING
MEV RANGE
MEV RANGE 10-100
NIOBIUM 93 TARGET
NUCLEAR REACTION ANALYSIS
NUCLEAR REACTIONS
OXYGEN 16 REACTIONS
SCATTERING
TARGETS
TOTAL CROSS SECTIONS