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Elastic scattering induced by /sup 16/O on /sup 208/Pb. [Cross sections, 80 to 102 MeV, optical model]

Conference ·
OSTI ID:7150874
; ; ; ; ;

Elastic scattering cross sections were measured for /sup 16/O on /sup 208/Pb targets at incident energies of 80, 83, 88, 90, 96, and 102 MeV. These data along with existing elastic scattering measurements for this system at 94, 104, 129.5, 140, 192, and 216.6 MeV were analyzed in terms of the optical model. For incident energies near the Coulomb barrier, a significant difference is observed between the grazing angular momentum and the total reaction cross sections predicted from the optical model and such values obtained from the semiclassical ''quarter-point'' prescription. Measured quasielastic and fission cross sections exceed the ''quarter-point'' total reaction cross section as much as 35 percent at the lowest incident energies in this analysis, indicating that it is imperative that the ''quarter-point'' method not be used to predict grazing angular momenta and reaction cross sections at incident energies near the Coulomb barrier. The incidence energy dependence of the radial region in which the real nuclear potential is determined by the elastic data also has been studied.

Research Organization:
Hanford Engineering Development Lab., Richland, Wash. (USA)
DOE Contract Number:
E(30-1)-16
OSTI ID:
7150874
Report Number(s):
BNL-21269; CONF-760424-16
Country of Publication:
United States
Language:
English

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Related Subjects

651515 -- Nuclear Properties & Reactions
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ANGULAR MOMENTUM
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTRIBUTION
ELASTIC SCATTERING
ENERGY RANGE
HEAVY ION REACTIONS
LEAD 208 TARGET
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NUCLEAR REACTIONS
OPTICAL MODELS
OXYGEN 16 REACTIONS
SCATTERING
TARGETS