Gamow-Teller and M1 strengths in closed-shell nuclei

doi:10.1016/0375-9474(85)90115-0

Nuclear Physics A

Volume 438, Issue 1, 13 May 1985, Pages 1-14

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Abstract

We study the transition strengths induced by the operators σ, σ · τ, l · τ and their combinations in the closed-shell nuclei ¹⁶O and ⁴⁰Ca. The total, inverse energy-weighted and energy-weighted strengths are calculated in perturbation theory. The results are discussed in connection with the available data. A large amount of Gamow-Teller and M1 strength is predicted at high excitation energies.

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Total Gamow-Teller strength, ground-state correlations and sum rules in QRPA with neutron-proton pairing
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1992, Physics Letters B
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Effect of ground-state correlation on the total Gamow-Teller strength of doubly LS closed shell nuclei
1991, Nuclear Physics, Section A
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A large-space shell-model approach to the ground state properties of <sup>16</sup>O
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The formalism of sum rules is developed and employed to investigate various giant resonances in nuclei. Particular emphasis is given to the role of surface effects which are shown to play a crucial role in the propagation of isoscalar as well as isovector collective modes. Sum rules for non-Hermitian operators, in particular for charge exchange reactions, are derived using the formalism of the dynamic polarizability. Several sum rules for investigating magnetic excitations, the structure of the transition density and the role of the nuclear deformation and of temperature on giant resonance are also presented and discussed.
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^†: Laboratoire associé au CNRS.

^∗: Present address: Theoretische Kernphysik, Universität Hamburg, 2000 Hamburg 50, West Germany.

^∗∗: Permanent address: Dipartimento di Fisica, Università di Trento, Povo (Trento) Italy.

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Gamow-Teller and M1 strengths in closed-shell nuclei

Abstract

Nucl. Phys.

Phys. Lett.

Phys. Lett.

Phys. Lett.

Ann. of Phys.

Phys. Rev. Lett.

Phys. Rev.