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

B. C. Rasco; N. T. Brewer; R. Yokoyama; R. Grzywacz; K. P. Rykaczewski; A. Tolosa-Delgado; J. Agramunt; J. L. Taín; A. Algora; O. Hall; C. Griffin; T. Davinson; V. H. Phong; J. Liu; S. Nishimura; G. G. Kiss; N. Nepal; A. Estrade

doi:10.1016/j.nima.2018.09.121

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

B. C. Rasco, N. T. Brewer, R. Yokoyama, R. Grzywacz, K. P. Rykaczewski, A. Tolosa-Delgado, J. Agramunt, J. L. Taín, A. Algora, O. Hall, C. Griffin, T. Davinson, V. H. Phong, J. Liu, S. Nishimura, G. G. Kiss, N. Nepal, A. Estrade

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10 Scopus citations

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 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.

Original language	English
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	https://doi.org/10.1016/j.nima.2018.09.121
State	Published - Dec 11 2018

Funding

This research was sponsored by the Office of Nuclear Physics, U. S. Department of Energy under contracts DE-AC05-00OR22725 (ORNL). This work was also supported in part by the National Science Foundation, USA grant PHY 1714153 (CMU). This work was supported by the Spanish Ministerio de Econom\u00EDa y Competitividad, Spain under Grant, No. FPA2014-52823-C2-1-P , and the program Severo Ochoa ( SEV-2014-0398 ) This work was also supported and inspired by the IAEA, Austria Coordinated Research Project for a \u201CReference Database for -Delayed Neutron Emission\u201D. This research was sponsored by the Office of Nuclear Physics, U. S. Department of Energy under contracts DE-AC05-00OR22725 (ORNL). This work was also supported in part by the National Science Foundation, USA grant PHY 1714153 (CMU). This work was supported by the Spanish Ministerio de Econom\u00EDa y Competitividad, Spain under Grant, No. FPA2014-52823-C2-1-P, and the program Severo Ochoa (SEV-2014-0398) This work was also supported and inspired by the IAEA, Austria Coordinated Research Project for a \u201CReference Database for [Formula presented]-Delayed Neutron Emission\u201D.

Keywords

Multi-neutron emission data analysis
Neutron detectors

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10.1016/j.nima.2018.09.121

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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. (2018). The ORNL analysis technique for extracting [Formula presented]-delayed multi-neutron branching ratios with BRIKEN. 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

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title = "The ORNL analysis technique for extracting [Formula presented]-delayed multi-neutron branching ratios with BRIKEN",

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 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.",

keywords = "Multi-neutron emission data analysis, Neutron detectors",

author = "Rasco, {B. C.} and Brewer, {N. T.} and R. Yokoyama and R. Grzywacz and Rykaczewski, {K. P.} and A. Tolosa-Delgado and J. Agramunt and Ta{\'i}n, {J. L.} and A. Algora and O. Hall and C. Griffin and T. Davinson and Phong, {V. H.} and J. Liu and S. Nishimura and Kiss, {G. G.} and N. Nepal and A. Estrade",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = dec,

day = "11",

doi = "10.1016/j.nima.2018.09.121",

language = "English",

volume = "911",

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Rasco, BC, Brewer, NT, Yokoyama, R, Grzywacz, R, Rykaczewski, KP, Tolosa-Delgado, A, Agramunt, J, Taín, JL, Algora, A, Hall, O, Griffin, C, Davinson, T, Phong, VH, Liu, J, Nishimura, S, Kiss, GG, Nepal, N & Estrade, A 2018, 'The ORNL analysis technique for extracting [Formula presented]-delayed multi-neutron branching ratios with BRIKEN', 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

The ORNL analysis technique for extracting [Formula presented]-delayed multi-neutron branching ratios with BRIKEN. / Rasco, B. C.; Brewer, N. T.; Yokoyama, R. et al.
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 911, 11.12.2018, p. 79-86.

Research output: Contribution to journal › Article › peer-review

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

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U2 - 10.1016/j.nima.2018.09.121

DO - 10.1016/j.nima.2018.09.121

M3 - Article

AN - SCOPUS:85054920120

SN - 0168-9002

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

ER -

Rasco BC, Brewer NT, Yokoyama R, Grzywacz R, Rykaczewski KP, Tolosa-Delgado A et al. The ORNL analysis technique for extracting [Formula presented]-delayed multi-neutron branching ratios with BRIKEN. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2018 Dec 11;911:79-86. doi: 10.1016/j.nima.2018.09.121

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

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Keywords

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