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[en] This paper reports on comparative analysis of different parametrizations of the spherical optical potential. For nuclei in the region of the maximum strength functions (A = 40 divided-by 60) a deep minimum in the total cross-sections at energies below 3 MeV as well as level excitation functions cannot be reproduced by any existing parameterizations. The additional information on neutron cross-sections at low energies as well as the information on single-particle state binding energies (as the extrapolation of the optical potential to the negative energy region) are included in the present analysis. As a result, a new approach to the optical model parametrization is recommended
Source
Mehta, M.K.; Schmidt, J.J. (Nuclear Data Section, Div. of Physical and Chemical Sciences, International Atomic Energy Agency, Vienna (Austria)); 920 p; ISBN 9971-50-897-4; 
; 1989; p. 459-505; World Scientific Pub. Co; Teaneck, NJ (United States); Workshop on applied nuclear theory and nuclear model calculations for nuclear technology applications; Trieste (Italy); 15 Feb - 19 Mar 1988; CONF-880298--; World Scientific Pub. Co., 687 Hartwell Street, Teaneck, NJ 07666 (USA)
; 1989; p. 459-505; World Scientific Pub. Co; Teaneck, NJ (United States); Workshop on applied nuclear theory and nuclear model calculations for nuclear technology applications; Trieste (Italy); 15 Feb - 19 Mar 1988; CONF-880298--; World Scientific Pub. Co., 687 Hartwell Street, Teaneck, NJ 07666 (USA)