### Abstract

Many choices are available in order to evaluate large radioactive decay networks. There are many parameters that influence the calculated [Formula presented]-decay delayed single and multi-neutron emission branching fractions. We describe assumptions about the decay model, background, and other parameters and their influence on [Formula presented]-decay delayed multi-neutron emission analysis. An analysis technique, the ORNL BRIKEN analysis procedure, for determining [Formula presented]-delayed multi-neutron branching ratios in [Formula presented]-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 [Formula presented] trigger. The technique allows one to extract [Formula presented]-delayed multi-neutron decay branching ratios measured with the ^{3}He BRIKEN neutron counter. As an example, two analyses of the [Formula presented]-neutron emitter ^{77}Cu based on different a priori assumptions are presented along with comparisons to literature values.

Original language | English |
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Pages (from-to) | 79-86 |

Number of pages | 8 |

Journal | Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment |

Volume | 911 |

DOIs | |

Publication status | Published - dec. 11 2018 |

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### ASJC Scopus subject areas

- Nuclear and High Energy Physics
- Instrumentation

### Cite this

*Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment*,

*911*, 79-86. https://doi.org/10.1016/j.nima.2018.09.121

**The ORNL analysis technique for extracting [Formula presented]-delayed multi-neutron branching ratios with BRIKEN.** / Rasco, B. C.; Brewer, N. T.; Yokoyama, R.; Grzywacz, R.; Rykaczewski, K. P.; Tolosa-Delgado, A.; Agramunt, J.; Taín, J. L.; Algora, A.; Hall, O.; Griffin, C.; Davinson, T.; Phong, V. H.; Liu, J.; Nishimura, S.; Kiss, G. G.; Nepal, N.; Estrade, A.

Research output: Article

*Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment*, vol. 911, pp. 79-86. https://doi.org/10.1016/j.nima.2018.09.121

}

TY - JOUR

T1 - The ORNL analysis technique for extracting [Formula presented]-delayed multi-neutron branching ratios with BRIKEN

AU - Rasco, B. C.

AU - Brewer, N. T.

AU - Yokoyama, R.

AU - Grzywacz, R.

AU - Rykaczewski, K. P.

AU - Tolosa-Delgado, A.

AU - Agramunt, J.

AU - Taín, J. L.

AU - Algora, A.

AU - Hall, O.

AU - Griffin, C.

AU - Davinson, T.

AU - Phong, V. H.

AU - Liu, J.

AU - Nishimura, S.

AU - Kiss, G. G.

AU - Nepal, N.

AU - Estrade, A.

PY - 2018/12/11

Y1 - 2018/12/11

N2 - Many choices are available in order to evaluate large radioactive decay networks. There are many parameters that influence the calculated [Formula presented]-decay delayed single and multi-neutron emission branching fractions. We describe assumptions about the decay model, background, and other parameters and their influence on [Formula presented]-decay delayed multi-neutron emission analysis. An analysis technique, the ORNL BRIKEN analysis procedure, for determining [Formula presented]-delayed multi-neutron branching ratios in [Formula presented]-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 [Formula presented] trigger. The technique allows one to extract [Formula presented]-delayed multi-neutron decay branching ratios measured with the 3He BRIKEN neutron counter. As an example, two analyses of the [Formula presented]-neutron emitter 77Cu based on different a priori assumptions are presented along with comparisons to literature values.

AB - Many choices are available in order to evaluate large radioactive decay networks. There are many parameters that influence the calculated [Formula presented]-decay delayed single and multi-neutron emission branching fractions. We describe assumptions about the decay model, background, and other parameters and their influence on [Formula presented]-decay delayed multi-neutron emission analysis. An analysis technique, the ORNL BRIKEN analysis procedure, for determining [Formula presented]-delayed multi-neutron branching ratios in [Formula presented]-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 [Formula presented] trigger. The technique allows one to extract [Formula presented]-delayed multi-neutron decay branching ratios measured with the 3He BRIKEN neutron counter. As an example, two analyses of the [Formula presented]-neutron emitter 77Cu based on different a priori assumptions are presented along with comparisons to literature values.

KW - Multi-neutron emission data analysis

KW - Neutron detectors

UR - http://www.scopus.com/inward/record.url?scp=85054920120&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85054920120&partnerID=8YFLogxK

U2 - 10.1016/j.nima.2018.09.121

DO - 10.1016/j.nima.2018.09.121

M3 - Article

VL - 911

SP - 79

EP - 86

JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

SN - 0168-9002

ER -