THE IMAGINARY PART OF THE OPTICAL POTENTIAL

Technical Report · Thu Jan 01 04:00:00 EST 1959

OSTI ID:4223585

Gomes, L C

The imaginary part of the optical potential was investigated for low energy incoming neutrons, by means of the nucleon-nucleon cross sections in nuclear matter. The cross sections were calculated under the assumption that pair correlations for low excited states of nuclear matter are the same as those formed in the ground state. The dependence of the effective mass on the single particle momentum was taken into consideration using an empirical solution which reproduces the present assumption, for the single particle spectrum. The results were applied to the nuclear surface in the Thomas-Fermi approximation. The maximum in the imaginary potential was found io be at the surface outside of the half-density radius. For low incident energies it is about 1.5 fermis beyond this radius. (auth)

• Research Organization: Rio de Janeiro. Centro Brasileiro de Pesquisas Fisicasf and Massachusetts Inst. of Tech., Cambridge. Lab. for Nuclear Science
• NSA Number: NSA-13-022956
• OSTI ID: 4223585
• Report Number(s): AECU-4365
• Country of Publication: United States
• Language: English

Related Subjects

CONFIGURATION-- CROSS SECTIONS-- ENERGY LEVELS-- EXCITATION-- MASS-- MATHEMATICS-- MOMENTUM-- NUCLEAR MATTER-- NUCLEAR MODELS-- NUCLEONS-- NUMERICALS-- SPECTRA
CONFIGURATION-- DIFFERENTIAL EQUATIONS-- FERMIONS-- NUCLEAR MODELS-- NUCLEI-- STATISTICS-- SURFACES-- THOMAS-FERMI MODEL
CROSS SECTIONS-- NUCLEAR MATTER-- NUCLEAR MODELS-- NUCLEAR THEORY-- NUCLEONS-- SCATTERING
ENERGY-- INTERACTIONS-- MATHEMATICS-- NEUTRON BEAMS-- NUCLEAR MODELS-- OPTICAL MODEL
PHYSICS AND MATHEMATICS