Theory of two-proton radioactivity with application to 19Mg and 48Ni
We study the emission of two protons from nuclei where this is the only decay channel. A three-body model is developed. We compare the "diproton" model with the three-body calculations. We present exploratory studies of the 19Mg and 48Ni ground states, which are good candidates for two-proton radioactivity. The two-proton width for the 17Ne 3/2(-) state is also estimated. Our calculations give substantially lower values for the width than predicted by the diproton model, but larger than from direct decay to the continuum.
Grigorenko
LV
Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom and Russian Research Center "The Kurchatov Institute, " 123182 Moscow, Russia.
Johnson
RC
Mukha
IG
Thompson
IJ
Zhukov
MV