Bulg. J. Phys. vol.27 no.1 (2000), pp. 078-083


Nucleon Removal Reactions from 16O and 40Ca Within Nuclear Correlation Methods

A.N. Antonov1, M.K. Gaidarov1, K.A. Pavlova1, M.V. Ivanov1, S.S. Dimitrova 1, M.V. Stoitsov 1, C. Giusti2, D. Van Neck3, H. Müther4
1Institute of Nuclear Research and Nuclear Enerqy, Bulgarian Academy of Sciences, Sofia 1784, Bulgaria
2Dipartimento di Fisica Nucleare e Teorica, Università di Pavia, lstituto Nazionale di Fisica Nucleare, Sezione di Pavia, Pavia , Italy
3Laboratory for Theoretical Physics , Proeftuinstraat 86, B-9000 Gent, Belgium
4Institut für Theoretische Physik, Universität Tübingen, Auf der Morqenstelle 14, D-72076 Tübingen, Germany
Abstract. The one-nucleon overlap functions corresponding to bound states of the (A-1)-particle system are calculated using their relationship with the one-body density matrix for the ground state of the A-particle system. The calculations of the overlap functions and the spectroscopic factors are performed within various correlation methods, such as: i) the Jastrow correlation method (JCM); ii) the Correlated Basis Function Theory (CBF); iii) the Green Function Method (GFM); and iv) the approach to the Generator Coordinate Method (GCM). The overlap functins from these methods are used for consistent calculations of cross sections of the (p,d), (e,e'p) , (e,e'n) and (γ,p) reactions on 16O. The cross sections of these reactions on 40Ca are also evaluated using overlap functions obtained within the JCM and GCM. The work presents a test for the extent to which different types of nucleon-nucleon (NN) correlations are included in the theoretical methods considered.

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