O$sup 16$ + O$sup 16$ ELASTIC SCATTERING

Technical Report · Mon Apr 10 04:00:00 EST 1961

OSTI ID:4021382

Roll, P G; Newman, E; Steigert, F E

Differential cross sections for the elastic scattering of oxygen target were measured over a range of laboratory angles from about 2 to 11 deg . Using a simple diffraction model and a nuclear radius of 1.34 A/sup 1/3/ x 10/sup -13/ cm = 3.37 x 10 -/sup 13/ cm, a good fit was obtained to the positions of the maxima and minima of the angular distributions. In addition, this analysis gave qualitative agreement with the absolute magnitude of the measured cross section at 9.65 Mev/amu. Attempts to fit the data with a sharp cutoff model were not as successful. By modifying this model with an imaginary nuclear phase shift to produce a diffuse cutoff, the agreement was somewhat improved. Linear and exponential shapes for the edge of the nuclear surface were equally satisfactory, and resulted in cutoff radius parameters which were larger than that obtained from the diffraction analysis, and which increased with decreasing energy. The radial diffuseness parameters DELTA R obtained from these calcualtions ranged from 0.51 x 10/sup -13/ cm at 9.65 Mev/amu to 0.23 x 10/sup -13/ cm at 5.66 Mev/ amu, in reasonable agreement with those obtained from optical model calculations. (auth)

• Research Organization: Yale Univ., New Haven. Sloane Physics Lab.
• NSA Number: NSA-15-017559
• OSTI ID: 4021382
• Report Number(s): TID-12446
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
CROSS SECTIONS
DIFFRACTION
ELASTIC SCATTERING
ENERGY RANGE
GASES
ION BEAMS
IONS
MATHEMATICS
MEASURED VALUES
NUCLEAR MODELS
NUCLEAR RADII
NUCLEAR THEORY
NUCLEI
NUMERICALS
OPTICAL MODEL
OXYGEN 16
PHASE SHIFT
PHYSICS
QUANTUM MECHANICS
SCATTERING
SURFACES
TARGETS