Study of the energy dependence of elastic and inelastic scattering of /sup 16/O from /sup 20/Ne

Thesis/Dissertation · Tue Jan 01 04:00:00 EST 1980

OSTI ID:5652059

Gal, M

A differentially pumped gas cell with gas recycling system is used to study the scattering of /sup 16/O from /sup 20/Ne-gas target. Excitation functions and angular distributions are measured. Correlated energy dependence of the excitation functions measured at several angles is observed. A structure at E/sub cm/ approximately equal to 18 MeV is observed only in the elastic channel. A high resolution study with a thin target (p = 5 torr) was carried out at E/sub cm/ approximately equal to 24 MeV, as well as at the E/sub cm/ approximately equal to 19.7 MeV resonance in the /sup 16/O + /sup 12/C system. Structure of finer width does not appear statistically significant in both systems. Elastic scattering angular distributions measured at energies above the Coulomb barrier show backward rise and oscillatory pattern that resembles a single Legendre polynomial squared, except for the E/sub cm/ = 18.5 MeV angular distribution, which appears to be different. Optical model plus resonance(s) calculations are carried out. The angular distributions measured at E/sub cm/ = 24.2 and 24.7 MeV yield resonances in the l = 17 partial wave at E/sub cm/ = 24.2 MeV with total width GAMMA approx. = 1.5 MeV. The angular distributions measured at E/sub cm/ = 17.4 and 18.5 MeV are consistent with a resonance in the l = 12 partial wave at E/sub cm/ = 17.4 MeV with ..gamma.. approx. = 2.0 MeV and a resonance in the l = 8 partial wave at E/sub cm/ = 18.5 MeV with smaller total width. The elastic transfer mechanism for the /sup 16/O + /sup 20/Ne system is investigated in a semi-microscopic scheme where the total scattering amplitude consists of a coherent sum of direct elastic scattering and ..cap alpha.. transfer amplitudes. Microscopic form factor and ..cap alpha.. particle spectroscopic factor for /sup 20/Ne are used.

• Research Organization: State Univ. of New York, Stony Brook (USA)
• OSTI ID: 5652059
• Country of Publication: United States
• Language: English

Related Subjects

651415 -- Nuclear Properties & Reactions
A=20-38
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
651425* -- Nuclear Properties & Reactions
A=20-38
Experimental-- Nuclear Reactions & Scattering-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DATA
DISTRIBUTION
ELASTIC SCATTERING
ENERGY DEPENDENCE
ENERGY RANGE
EXCITATION FUNCTIONS
EXPERIMENTAL DATA
FUNCTIONS
HEAVY ION REACTIONS
INELASTIC SCATTERING
INFORMATION
MEV RANGE
MEV RANGE 10-100
NEON 20 TARGET
NUCLEAR REACTIONS
NUMERICAL DATA
OPTICAL MODELS
OXYGEN 16 REACTIONS
SCATTERING
TARGETS