The ORNL Analysis Technique for Extracting $\beta$-Delayed Multi-Neutron Branching Ratios with BRIKEN
Abstract
Many choices are available in order to evaluate large radioactive decay networks. %multi-particle decay data. There are many parameters that influence the calculated -decay delayed single and multi-neutron emission branching fractions. We describe assumptions about the decay model, background, and other parameters and their influence on -decay delayed multi-neutron emission analysis. An analysis technique, the ORNL BRIKEN analysis procedure, for determining -delayed multi-neutron branching ratios in -neutron precursors produced by means of heavy-ion fragmentation is presented. The technique is based on estimating the initial activities of zero, one, and two neutrons occurring in coincidence with an ion-implant and trigger. The technique allows one to extract -delayed multi-neutron decay branching ratios measured with the hybrid \textsuperscript{3}He BRIKEN neutron counter. As an example, two analyses of the -neutron emitter \textsuperscript{77}Cu based on different {\it a priori} assumptions are presented along with comparisons to literature values.
Keywords
Cite
@article{arxiv.1806.05238,
title = {The ORNL Analysis Technique for Extracting $\beta$-Delayed Multi-Neutron Branching Ratios with BRIKEN},
author = {B. C. Rasco and N. T. Brewer and R. Yokoyama and R. Grzywacz and K. P. Rykaczewski and A. Tolosa-Delgado and J. Agramunt and J. L. Tain and A. Algora and O. Hall and C. Griffin and T. Davinson and V. H. Phong and J. Liu and S. Nishimura and G. G. Kiss and N. Nepal and A. Estrade},
journal= {arXiv preprint arXiv:1806.05238},
year = {2018}
}
Comments
21 pages, 10 figures