An extensive study of pairing effects in the Sn isotopes is carried out. The pairing Hamiltonian is treated by the chain-calculation method which provides practically exact solutions while involving less computational work than a complete-basis diagonalization. The coupling strength is fixed by reproducing the energy of the 9- state in 116Sn, while the single-particle energies have been determined by an analysis of the experimental low-energy spectra of the odd-A isotopes. A detailed comparison of the calculated results with experimental data evidences the importance of neutron pairing correlations in the 50-82 shell. The results of this paper complement those of our previous study of the N=82 isotones. It turns out that the role of pairing correlations is similar to a large extent in both cases.

Pairing effects in Sn isotopes / Andreozzi, Francesco; L., Coraggio; A., Covello; A., Gargano; Porrino, Antonio. - In: ZEITSCHRIFT FÜR PHYSIK. A, HADRONS AND NUCLEI. - ISSN 0939-7922. - STAMPA. - 354:3(1996), pp. 253-260.

Pairing effects in Sn isotopes

ANDREOZZI, FRANCESCO;PORRINO, ANTONIO
1996

Abstract

An extensive study of pairing effects in the Sn isotopes is carried out. The pairing Hamiltonian is treated by the chain-calculation method which provides practically exact solutions while involving less computational work than a complete-basis diagonalization. The coupling strength is fixed by reproducing the energy of the 9- state in 116Sn, while the single-particle energies have been determined by an analysis of the experimental low-energy spectra of the odd-A isotopes. A detailed comparison of the calculated results with experimental data evidences the importance of neutron pairing correlations in the 50-82 shell. The results of this paper complement those of our previous study of the N=82 isotones. It turns out that the role of pairing correlations is similar to a large extent in both cases.
1996
Pairing effects in Sn isotopes / Andreozzi, Francesco; L., Coraggio; A., Covello; A., Gargano; Porrino, Antonio. - In: ZEITSCHRIFT FÜR PHYSIK. A, HADRONS AND NUCLEI. - ISSN 0939-7922. - STAMPA. - 354:3(1996), pp. 253-260.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/489979
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