scholarly journals A Multilevel Formalism for Neutron Elastic Scattering Cross Sections

1970 ◽  
Vol 23 (5) ◽  
pp. 823
Author(s):  
E Clayton

An extension of the Feshbach, Porter, and Weisskopf formalism has been developed for neutron elastic scattering. The emphasis in this paper is on resonanceresonance interference and explicit use of the background R matrix. The results of this formulation are compared with experimental data in the resonance region for the nuclides 238U, 197Au, and 23Na.

1981 ◽  
Vol 36 (5) ◽  
pp. 443-446 ◽  
Author(s):  
D. Majumdar ◽  
A. Roy Chowdhury ◽  
T. Roy

Abstract Differential scattering cross-sections for the elastic scattering of α by C12 at laboratory bombarding energies from 11.0 to 16.0 MeV have been evaluated in the direct channel Regge-pole formalism, taking into account the contributions from a few nearby dominant excited levels of the compound nucleus O16 and incorporating the background effect. The relevant pole-parameters have also been predicted.


2019 ◽  
Vol 28 (09) ◽  
pp. 1950074
Author(s):  
Zakaria M. M. Mahmoud ◽  
Awad A. Ibraheem ◽  
M. A. Hassanain

In this work, we simultaneously reanalyzed the differential elastic scattering cross-sections ([Formula: see text]) and the vector analyzing power ([Formula: see text]) of [Formula: see text]He elastic scattering. This analysis was performed using the folded optical model for both real central and spin-orbit (SO) potentials, respectively. For the imaginary central, we used the usual Woods-Saxon (WS) form. Three different model density distributions are used to calculate the potential. We aimed to examine the applicability of the microscopically derived SO potential and the structure effect of 6He nucleus. The presence of the [Formula: see text] experimental data of [Formula: see text]He makes it interesting for this study. Our calculations showed that the three densities gave similar predictions for the cross-sections data. The three microscopic SO potentials calculations of [Formula: see text] are not in a good agreement with the experimental data. We concluded that the SO formalism in its current form needs more investigations for exotic halo nuclei.


1974 ◽  
Vol 10 (1) ◽  
pp. 217-230 ◽  
Author(s):  
J. D. Childs ◽  
W. W. Daehnick ◽  
M. J. Spisak

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