Analysis of sensitivity of the reaction cross section and the forward scattering amplitude to the structure of the nuclear optical potential for intermediate-energy nucleons and antinucleons

Journal Article · Tue Apr 01 04:00:00 EST 1986 · Sov. J. Nucl. Phys. (Engl. Transl.); (United States)

OSTI ID:5081401

Zavarzina, V P; Stepanov, A V

Within the framework of the optical model with phenomenological optical potentials describing elastic scattering we calculate the total cross section, the reaction cross section, and the real part of the forward scattering amplitude for nucleons and antinucleons in the energy range 50--200 MeV for a broad range of nuclei. It is shown that with a significantly different spatial dependence of the real part of the optical potential (the Woods-Saxon form and the ''wine-bottle bottom'' form) the real parts of the proton forward scattering amplitude differ from each other by several times, while the difference in the total cross sections and reaction cross sections is not larger than tens of per cent. The calculations are performed in first-order perturbation theory in deviation of the wave function of the incident particle from the eikonal approximation. Comparison of the results of the approximate and exact calculations shows that the error of the approximate approach in the energy range considered is not larger than 10%. We compare our results with the results of calculations of the reaction cross section for antiprotons in light nuclei in the Glauber theory.

• Research Organization: Nuclear Research Institute, USSR Academy of Sciences
• OSTI ID: 5081401
• Journal Information: Sov. J. Nucl. Phys. (Engl. Transl.); (United States), Journal Name: Sov. J. Nucl. Phys. (Engl. Transl.); (United States) Vol. 43:4; ISSN SJNCA
• Country of Publication: United States
• Language: English

Related Subjects

653003* -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
AMPLITUDES
ANTINUCLEON REACTIONS
BARYON REACTIONS
CROSS SECTIONS
ENERGY RANGE
HADRON REACTIONS
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
NUCLEON REACTIONS
OPTICAL MODELS
POTENTIALS
SCATTERING AMPLITUDES
TOTAL CROSS SECTIONS