Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1836372 | Nuclear Physics A | 2015 | 19 Pages |
Abstract
Beta-decay into broad resonances gives a distorted lineshape in the observed energy spectrum. Part of the distortion arises from the phase space factor, but we show that the beta-decay matrix element may also contribute. Based on a schematic model for p-wave continuum neutron states it is argued that beta-decay directly to the continuum should be considered as a possible contributing mechanism in many decays close to the driplines. The signatures in R-matrix fits for such decays directly to continuum states are discussed and illustrated through an analysis of the beta-decay of 8B into 2+2+ states in 8Be.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
K. Riisager, H.O.U. Fynbo, S. Hyldegaard, A.S. Jensen,