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Proton elastic scattering on light nuclei. I. Energy dependence

Journal Article · · Phys. Rev., C; (United States)
; ; ; ; ; ; ; ;
Differential cross sections for proton elastic scattering by /sup 15/N, /sup 18/O, /sup 24/Mg, and /sup 40/Ar were measured at several proton energies between 14 and 44 MeV. Previous data on /sup 12/C, /sup 16/O, /sup 24/Mg, /sup 28/Si, and /sup 40/Ca have also been considered. Evidence has been found for a strong enhancement in proton emission at backward angles for scattering by spherical nuclei at incident energies higher than 26 MeV. A phase-shift analysis of all the differential cross sections showed that the partial waves involved are those near grazing. Optical-model fits of good quality have been obtained for collective nuclei, while for spherical nuclei the cross sections at backward angles are not reproduced. The disagreement is not substantially modified when nonstandard radial dependences are given to the optical potential.
Research Organization:
Istituto di Fisica dell'Universita di Milano and Istituto Nazionale di Fisica Nucleare, Sezione di Milano, Milano, Italy
OSTI ID:
5680998
Journal Information:
Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 21:3; ISSN PRVCA
Country of Publication:
United States
Language:
English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
ARGON 40 TARGET
BARYON REACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
DISTRIBUTION
ELASTIC SCATTERING
ENERGY DEPENDENCE
ENERGY RANGE
HADRON REACTIONS
MAGNESIUM 24 TARGET
MEV RANGE
MEV RANGE 10-100
NITROGEN 15 TARGET
NUCLEAR REACTIONS
NUCLEON REACTIONS
OPTICAL MODELS
OXYGEN 18 TARGET
PHASE SHIFT
PROTON REACTIONS
SCATTERING
TARGETS