Core polarization for M2 transitions in odd-A tin isotopes

doi:10.1016/0375-9474(85)90239-8

Nuclear Physics A

Volume 440, Issue 3, 15 July 1985, Pages 437-444

https://doi.org/10.1016/0375-9474(85)90239-8 Get rights and content

Abstract

The reduced M2 transition probabilities $112^{−}_{1} → 72^{+}_{1}$ in the odd-A isotopes ^109–121Sn are found to reveal a specific behaviour. B(M2) values are calculated in the framework of the quasiparticlephonon model. The coupling of a quasineutron with the 2⁺, 3⁻ and 2⁻ one-phonon core excitation is taken into account. Inclusion of all one-phonon 2⁻ states up to 24 MeV in the wave functions of the excited states $112^{−}_{1} and 72^{+}_{1}$ reduces the theoretical B(M2) values by 3–4 times as compared to the single-particle values. The specific B(M2) dependence on the mass number appears to be due to the pairing effect.

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Core polarization for M2 transitions in odd-A tin isotopes

Abstract

At. Nucl. Data Tables

Nucl. Instr. Meth.

Nucl. Phys.

Phys. Reports

Theory of complex nuclei

Sov. J. Part. Nucl.

Nukleonika

Dubna report, P4-81-234

Phys. Reports