PT Journal
AU Rasco, BC
   Brewer, NT
   Yokoyama, R
   Grzywacz, R
   Rykaczewski, KP
   Tolosa-Delgado, A
   Agramunt, J
   Tain, JL
   Algora, A
   Hall, O
   Griffin, C
   Davinson, T
   Phong, VH
   Liu, J
   Nishimura, S
   Kiss, GG
   Nepal, N
   Estrade, A
TI The ORNL analysis technique for extracting beta-delayed multi-neutron branching ratios with BRIKEN
SO Nuclear Instruments & Methods in Physics Research A
JI Nucl. Instrum. Methods Phys. Res. A
PY 2018
BP 79
EP 86
VL 911
DI 10.1016/j.nima.2018.09.121
LA English
DE Neutron detectors; Multi-neutron emission data analysis
AB Many choices are available in order to evaluate large radioactive decay networks. There are many parameters that influence the calculated beta-decay delayed single and multi-neutron emission branching fractions. We describe assumptions about the decay model, background, and other parameters and their influence on beta-decay delayed multi-neutron emission analysis. An analysis technique, the ORNL BRIKEN analysis procedure, for determining beta-delayed multi-neutron branching ratios in beta-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 beta trigger. The technique allows one to extract beta-delayed multi-neutron decay branching ratios measured with the He-3 BRIKEN neutron counter. As an example, two analyses of the beta-neutron emitter Cu-77 based on different a priori assumptions are presented along with comparisons to literature values.
ER