Neutron Resonance Widths and the Porter-Thomas Distribution
Nuclear Theory
2015-08-05 v1
Abstract
Experimental evidence has recently put the validity of the Porter-Thomas distribution (PTD) for partial neutron widths into question. We identify two terms in the effective Hamiltonian that violate orthogonal invariance (the basis for the PTD). Both are due to the coupling to the decay channels. We show that realistic estimates for the coupling to the neutron channel and for non-statistical gamma decays yield significant modifications of the PTD.
Cite
@article{arxiv.1504.06771,
title = {Neutron Resonance Widths and the Porter-Thomas Distribution},
author = {Alexander Volya and Hans A. Weidenmüller and Vladimir Zelevinsky},
journal= {arXiv preprint arXiv:1504.06771},
year = {2015}
}
Comments
5 pages, 2 figures