Updated three-body model of He6β decay into the α+d continuum

E. M. Tursunov, D. Baye, and P. Descouvemont
Phys. Rev. C 97, 014302 – Published 4 January 2018

Abstract

The β-decay process of the He6 halo nucleus into the α+d continuum is studied in an updated three-body model. The He6 nucleus is described as an α+n+n system in hyperspherical coordinates on a Lagrange mesh. The shape and absolute values of the transition probability per time and energy units of new experiments are reproduced with a modified α+d potential. The obtained total transition probabilities are (2.48±0.16)×106s1 for the full energy region and (2.40±0.16)×106s1 for the cut-off E>150 keV. The strong cancellation between the internal and halo parts of the β decay matrix element is a challenge for future ab initio calculations.

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  • Received 6 September 2017
  • Revised 9 November 2017

DOI:https://doi.org/10.1103/PhysRevC.97.014302

©2018 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

E. M. Tursunov1,*, D. Baye2,3,†, and P. Descouvemont3,‡

  • 1Institute of Nuclear Physics, Uzbekistan Academy of Sciences, 100214, Ulugbek, Tashkent, Uzbekistan
  • 2Physique Quantique, C.P. 229, Université Libre de Bruxelles, B-1050 Brussels, Belgium
  • 3Physique Nucléaire Théorique et Physique Mathématique, C.P. 229, Université Libre de Bruxelles, B-1050 Brussels, Belgium

  • *tursune@inp.uz
  • dbaye@ulb.ac.be
  • pdesc@ulb.ac.be

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Issue

Vol. 97, Iss. 1 — January 2018

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