Neutron-scattering studies of the doubly magic Ca nuclei, sup 40 Ca and sup 48 Ca, in the low-energy resonance region

Miscellaneous · Fri Jan 01 00:00:00 EST 1988

OSTI ID:6827930

Hicks, S F

Measurements of neutron elastic and inelastic scattering differential cross sections from {sup 48}Ca at 2.35, 2.43, 2.71, 3.15, 3.55, 4.70, 6.00, and 7.97 MeV are presented. These data are combined with n + {sup 48}Ca total cross sections taken at Oak Ridge National Laboratory to form a rather extensive set of scattering data for {sup 48}Ca between 80 keV and 20 MeV incident neutron energy. Coupled-channels analyses of these data with a first-order vibrational model described both the neuron inelastic cross sections at 7.97 MeV and intermediate structure resonances observed in the total cross sections below 3 MeV. Particle-core coupled resonance configurations were determined for four intermediate structure resonances from the coupled-channels calculations. Also measured at each of the energies listed above were neutron elastic and inelastic cross sections from {sup 40}Ca. In addition to the above coupled-channels analysis of {sup 48}Ca, the mean field potential used to describe the bound-state and scattering data of {sup 48}Ca was determined using a dispersion relation to connect the real and imaginary components of the optical model potential. Finally, differential scattering cross sections measured between 2 and 3.5 MeV from {sup 48}Ca are compared to calculations using phase shifts from an evaluation of the total cross sections. The agreement between the measured and calculated differential scattering cross sections was excellent at some energies.

• Research Organization: Kentucky Univ., Lexington, KY (USA)
• OSTI ID: 6827930
• Resource Relation: Other Information: Thesis (Ph. D.)
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
CALCIUM ISOTOPES
DIFFERENTIAL CROSS SECTIONS
CALCULATION METHODS
DATA ANALYSIS
ELASTIC SCATTERING
EXPERIMENTAL DATA
INELASTIC SCATTERING
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MEASURING METHODS
MEV RANGE 01-10
NEUTRON SPECTRA
THEORETICAL DATA
ALKALINE EARTH ISOTOPES
CROSS SECTIONS
DATA
ENERGY RANGE
INFORMATION
ISOTOPES
MEV RANGE
NUMERICAL DATA
SCATTERING
SPECTRA
651520* - Nuclear Properties & Reactions
A=39-58
Experimental
400700 - Radiochemistry & Nuclear Chemistry