Neutron-proton pairing and particle-number projection effects on the spectroscopic factor for two-neutron stripping reactions in even-even proton-rich nuclei

Isovector neutron-proton (np) pairing effect, as well as that of the particle-number projection, on the spectroscopic factor (SF) for two-neutron stripping reactions in even-even proton-rich nuclei are studied. As a first step, expressions of the spectroscopic factor are derived using a schematic de...

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Bibliographic Details
Main Authors: Benbouzid, Y., Allal, N. H., Fellah, M., Oudih, M. R.
Format: Conference Proceeding
Language:English
Subjects:
BCS theory
Deformation
Even-even nuclei
Mathematical models
Nuclei (nuclear physics)
Projection
Protons
Stripping
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Summary:Isovector neutron-proton (np) pairing effect, as well as that of the particle-number projection, on the spectroscopic factor (SF) for two-neutron stripping reactions in even-even proton-rich nuclei are studied. As a first step, expressions of the spectroscopic factor are derived using a schematic definition of the SF proposed by Chasman within the generalized BCS theory and the Sharp-BCS (SBCS) projection method. As a second step, the np pairing and projection effects are numerically studied using the schematic picked-fence model. As a last step, the same effects are numerically studied in the case of proton-rich even-even nuclei using the single-particle energies of a Woods-Saxon deformed mean-field.
ISSN:0094-243X
1551-7616
DOI:10.1063/1.5048139