Evidence for Phonon Mediated Pairing Interaction in the Halo of the Nucleus Li11

G. Potel, F. Barranco, E. Vigezzi, and R. A. Broglia
Phys. Rev. Lett. 105, 172502 – Published 19 October 2010

Abstract

With the help of a unified nuclear-structure–direct-reaction theory we analyze the reaction H1(Li11,Li9)H3. The two halo neutrons are correlated through the bare and the induced (medium polarization) pairing interaction. By considering all dominant reaction channels leading to the population of the 1/2 (2.69 MeV) first excited state of Li9, namely, multistep transfer (successive, simultaneous, and nonorthogonality), breakup, and inelastic channels, it is possible to show that the experiment provides direct evidence of phonon mediated pairing.

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  • Received 16 December 2009

DOI:https://doi.org/10.1103/PhysRevLett.105.172502

© 2010 The American Physical Society

Authors & Affiliations

G. Potel

  • Dipartimento di Fisica, Università di Milano, Via Celoria 16, 20133 Milano, Italy, INFN, Sezione di Milano Via Celoria 16, 20133 Milano, Italy and Departamento de Fisica Atomica, Molecular y Nuclear, Universidad de Sevilla, Facultad de Fisica, Avenida Reina Mercedes s/n, Spain

F. Barranco

  • Departamento de Fisica Aplicada III, Universidad de Sevilla, Escuela Superior de Ingenieros, Sevilla, 41092 Camino de los Descubrimientos s/n, Spain

E. Vigezzi

  • INFN, Sezione di Milano Via Celoria 16, 20133 Milano, Italy

R. A. Broglia

  • Dipartimento di Fisica, Università di Milano, Via Celoria 16, 20133 Milano, Italy, INFN, Sezione di Milano Via Celoria 16, 20133 Milano, Italy and The Niels Bohr Institute, University of Copenhagen, Blegdamsvej 17, 2100 Copenhagen Ø, Denmark

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Issue

Vol. 105, Iss. 17 — 22 October 2010

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