The ORNL Analysis Technique for Extracting $β$-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. Tain; 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 $β$-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. Tain
, A. Algora
, O. Hall
, C. Griffin
, T. Davinson
, V. H. Phong
, J. Liu
, S. Nishimura
, G. G. Kiss
, N. Nepal
, A. Estrade

School of Physics and Astronomy

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

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 $\beta$-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 hybrid \textsuperscript{3}He BRIKEN neutron counter. As an example, two analyses of the $\beta$-neutron emitter \textsuperscript{77}Cu based on different {\it a priori} assumptions are presented along with comparisons to literature values.

Original language	English
Number of pages	21
Journal	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Early online date	3 Oct 2018
DOIs	https://doi.org/10.1016/j.nima.2018.09.121
Publication status	Published - 11 Dec 2018

Keywords / Materials (for Non-textual outputs)

physics.ins-det
nucl-ex

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10.1016/j.nima.2018.09.121

BRIKEN_Analysis_PaperAccepted author manuscript, 439 KBLicence: CC BY-NC-ND

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Edinburgh Nuclear Physics Group Consolidated Grant Proposal
Woods, P. (Principal Investigator), Aliotta, M. (Co-investigator), Lederer-Woods, C. (Co-investigator), Murphy, A. (Co-investigator) & Watts, D. (Co-investigator)
STFC
1/10/17 → 30/09/21
Project: Research

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Rasco, B. C., Brewer, N. T., Yokoyama, R., Grzywacz, R., Rykaczewski, K. P., Tolosa-Delgado, A., Agramunt, J., Tain, 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 $β$-Delayed Multi-Neutron Branching Ratios with BRIKEN. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. https://doi.org/10.1016/j.nima.2018.09.121

@article{071520e575f44655952023bbabc1ed54,

title = "The ORNL Analysis Technique for Extracting \$β\$-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 \$\textbackslash{}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 \$\textbackslash{}beta\$-decay delayed multi-neutron emission analysis. An analysis technique, the ORNL BRIKEN analysis procedure, for determining \$\textbackslash{}beta\$-delayed multi-neutron branching ratios in \$\textbackslash{}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 \$\textbackslash{}beta\$ trigger. The technique allows one to extract \$\textbackslash{}beta\$-delayed multi-neutron decay branching ratios measured with the hybrid \textbackslash{}textsuperscript\{3\}He BRIKEN neutron counter. As an example, two analyses of the \$\textbackslash{}beta\$-neutron emitter \textbackslash{}textsuperscript\{77\}Cu based on different \{\textbackslash{}it a priori\} assumptions are presented along with comparisons to literature values. ",

keywords = "physics.ins-det, nucl-ex",

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 Tain, \{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 = "21 pages, 10 figures",

year = "2018",

month = dec,

day = "11",

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

language = "English",

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

issn = "0168-9002",

publisher = "Elsevier",

}

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 2018, 'The ORNL Analysis Technique for Extracting $β$-Delayed Multi-Neutron Branching Ratios with BRIKEN', Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. https://doi.org/10.1016/j.nima.2018.09.121

TY - JOUR

T1 - The ORNL Analysis Technique for Extracting $β$-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 - Tain, 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.

N1 - 21 pages, 10 figures

PY - 2018/12/11

Y1 - 2018/12/11

N2 - Many choices are available in order to evaluate large radioactive decay networks. %multi-particle decay data. 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 hybrid \textsuperscript{3}He BRIKEN neutron counter. As an example, two analyses of the $\beta$-neutron emitter \textsuperscript{77}Cu based on different {\it a priori} assumptions are presented along with comparisons to literature values.

AB - Many choices are available in order to evaluate large radioactive decay networks. %multi-particle decay data. 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 hybrid \textsuperscript{3}He BRIKEN neutron counter. As an example, two analyses of the $\beta$-neutron emitter \textsuperscript{77}Cu based on different {\it a priori} assumptions are presented along with comparisons to literature values.

KW - physics.ins-det

KW - nucl-ex

U2 - 10.1016/j.nima.2018.09.121

DO - 10.1016/j.nima.2018.09.121

M3 - Article

SN - 0168-9002

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 $β$-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. Epub 2018 Oct 3. doi: 10.1016/j.nima.2018.09.121

The ORNL Analysis Technique for Extracting $β$-Delayed Multi-Neutron Branching Ratios with BRIKEN

Abstract

Keywords / Materials (for Non-textual outputs)

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Projects

Edinburgh Nuclear Physics Group Consolidated Grant Proposal

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