Two-proton radioactivity and three-body decay: General problems and theoretical approach

L. V. Grigorenko; R. C. Johnson; I. G. Mukha; I. J. Thompson; M. V. Zhukov

doi:10.1103/PhysRevC.64.054002

Two-proton radioactivity and three-body decay: General problems and theoretical approach

L. V. Grigorenko, R. C. Johnson, I. G. Mukha, I. J. Thompson, and M. V. Zhukov

Phys. Rev. C 64, 054002 – Published 4 October 2001

Abstract

Theoretical aspects of the two-proton radioactivity and three-body decays are studied for nuclear systems, where three-body channel is the only (or dominating) decay channel. We briefly review the current experimental and theoretical status of the problem. We discuss the applicability of the widely used qualitative models (e.g., diproton model, direct decay to continuum) for estimates of the two-proton radioactivity. A three-body model is developed, which is free of most uncertainties typical for these estimates. It employs various forms of approximate boundary conditions for the three-body Coulomb problem and demonstrates high stability for widths and spatial distributions.

Received 27 April 2001

DOI:https://doi.org/10.1103/PhysRevC.64.054002

Authors & Affiliations

L. V. Grigorenko^1,2, R. C. Johnson¹, I. G. Mukha^3,2, I. J. Thompson¹, and M. V. Zhukov⁴

¹Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
²Russian Research Center “The Kurchatov Institute,” RU-123182 Moscow, Russia
³GSI, Planckstrasse 1, D-64291 Darmstadt, Germany
⁴Department of Physics, Chalmers University of Technology, S-41296 Göteborg, SwedenGöteborg University, S-41296 Göteborg, Sweden

Two-proton radioactivity and three-body decay. III. Integral formulas for decay widths in a simplified semianalytical approach

L. V. Grigorenko and M. V. Zhukov

Phys. Rev. C 76, 014008 (2007)

Two-proton radioactivity and three-body decay. IV. Connection to quasiclassical formulation

L. V. Grigorenko and M. V. Zhukov

Phys. Rev. C 76, 014009 (2007)

Two-proton radioactivity and three-body decay. V. Improved momentum distributions

L. V. Grigorenko, I. A. Egorova, M. V. Zhukov, R. J. Charity, and K. Miernik

Phys. Rev. C 82, 014615 (2010)

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Vol. 64, Iss. 5 — November 2001

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Physical Review C

covering nuclear physics