ELASTIC AND INELASTIC SCATTERING OF 31 Mev PROTONS FROM Pb$sup 20$$sup 8$

Thesis/Dissertation · Mon Jan 01 04:00:00 EST 1962

OSTI ID:4741489

Gigas, G

The angular distribution of 30.8-Mev protons from a linear proton accelerator scattered elastically from thin Pb/sup 208/ targets was obtained at angles ranging from 6 to 156 deg in the center of mass system. The data were fitted by an optical model potential of Nodvik and Saxon, which was a sum of a complex central nuclear potential, a spinorbit potential, and the Coulomb potential corresponding to a uniformly charged sphere. The angular distribution of protons resulting from the excitation of the first excited level at 2.62 Mev (3--) showed a diffraction-like pattern with approximately equally spaced maxima and minima. The cross section was strongly peaked in the forward direction. The magnitude of the cross section was reduced by a factor of 10 to 1000 from the magnitude of the elastic cross section. The elastic and inelastic distributions were in phase quadrature. A theoretical analysis of the inelastic data using the adiabatic diffraction theory of Blair for a 0 yields 3 transition gave the proper location of the maxima and minima but not their relative magnitudes. An analysis of the data was also performed using the direct interaction theory with the optical model potential employed by Nodvik. A qualitative fit was obtained by this analysis, although it was not possible to obtain the observed strong forward peaking. (M.P.G.)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-17-017292
• OSTI ID: 4741489
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ANGULAR DISTRIBUTION
BLAIR MODEL
BLAIR THEORY
CROSS SECTIONS
DIFFRACTION
DIRECT REACTIONS
ELECTRIC POTENTIAL
ENERGY
ENERGY LEVELS
ENERGY RANGE
EXCITATION
INTERACTIONS
LEAD 208
LINEAR ACCELERATORS
NUCLEAR MODELS
NUCLEAR REACTIONS
OPTICAL MODEL
ORBITS
PHYSICS
PROTON BEAMS
SCATTERING
SPIN
TARGETS