Pairing model for Pr-isotopes

Pal, M. K. ; Mitra, Dipti (1963) Pairing model for Pr-isotopes Nuclear Physics, 42 . pp. 221-228. ISSN 0029-5582

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The interaction between neutrons and protons filling different major shells is treated as a perturbation within the framework of the pairing force model. The lowest order effect is to keep the pairing model equations unchanged; only the single nucleon energies to be used therein are modified by an amount dependent on the number of the opposite kind of nucleons and the zero-rank component of the n-p potential. This effect produces the observed ground-state spins of Pr141, 143, 145. The quasi-neutron-quasi-proton interaction, which contains the effect from the higher multipole components of the n-p potential, must be diagonalised to attempt a detailed fit to the spectra. This is particularly true for the odd nuclei Pr142, 143. There are two competing configurations for the ground state of Pr144, a diagnolisation between which is now in progress.

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Deposited On:30 Mar 2011 11:56
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