Thomas-Ehrman effect in a three-body model: The Ne-16 case
Artikel i vetenskaplig tidskrift, 2015

The dynamic mechanism of the Thomas-Ehrman shift in three-cluster systems is studied by using the example of Ne-16 and C-16 isobaric mirror partners. We predict configuration mixings for 0(+) and 2(+) states in Ne-16 and C-16. Large isospin symmetry breaking on the level of wave function component weights is demonstrated for these states and discussed as a three-body mechanism of the Thomas-Ehrman shift. It is shown that the description of the Coulomb displacement energies requires consistency among three parameters: the Ne-16 decay energy ET, the F-15 ground-state energy E-r, and the configuration mixing parameters for the Ne-16 and (16)C0(+) and 2(+) states. Based on this analysis we infer the (15)F1/2(+) ground-state energy to be E-r = 1.39-1.42 MeV.

Författare

L. V. Grigorenko

T. A. Golubkova

Mikhail Zhukov

Chalmers, Fundamental fysik

Physical Review C - Nuclear Physics

0556-2813 (ISSN) 1089-490X (eISSN)

Vol. 91 article no. 024325 -

Ämneskategorier

Subatomär fysik

DOI

10.1103/PhysRevC.91.024325