Volume form of coupling interaction in semi-direct (n, γ) and (p, γ) reactions |
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Authors: | G Longo F Saporetti |
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Institution: | Comitato Nazionale Energia Nucleare, Centro di Calcolo, Bologna, Italy |
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Abstract: | A coupling interaction between the nucleon and the nuclear E1 mode having a volume radial form instead of the usual surface one is used in the semi-direct nucleon radiative-capture theory. The calculated cross sections for the 208Pb(n,γ) and 142Ce(p,γ) reactions in the giantresonance region reproduce the measured ones both in shape and magnitude. Satisfactory agreement is achieved in comparing the predicted and detected γ-ray spectra following neutron capture by 208Pb. A detailed analysis of the energy and angular-momentum dependence of the matrix elements when the volume and surface form factors are used, is performed. |
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Keywords: | Nuclear Reactions |
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