Fission fragment atomic number measurements using Bragg detectors

N.V. Sosnin; A.G. Smith; T. Wright; U. Köster; A. Blanc; B.S. Nara Singh; R.L. Kennedy-Reid; P.J. Davies

doi:10.1016/j.nima.2020.163397

Fission fragment atomic number measurements using Bragg detectors

N.V. Sosnin^*, A.G. Smith, T. Wright, U. Köster, A. Blanc, B.S. Nara Singh, R.L. Kennedy-Reid, P.J. Davies

^*Corresponding author for this work

School of Computing, Engineering and Physical Sciences

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Abstract

A Bragg detector with a Frisch grid and 1 metre-long time-of-flight section with microchannel plate assemblies was characterized at the Lohengrin fission fragment separator at the Institut Laue-Langevin (ILL) by measuring 235U fission fragments of selected masses and energies at the Lohengrin focal plane. The aim of the measurements was to investigate the response of Bragg detectors to differing nuclear charge states. Energy-loss and a signal-risetime dependent parameters were defined and extracted from the accumulated signal pulse shapes, and their behaviour as a function of fragment velocity was investigated. The experimental results are compared to a SRIM-2013 simulation. Measurements of fission fragment ranges in isobutane are presented. Average proton numbers for measured fragment masses were identified and could be resolved by the parameters, which exhibited monotonic variation with charge. The results differed from SRIM both in trends and in values, with SRIM simulations exhibiting non-monotonic behaviour with proton number.

Original language	English
Article number	163397
Number of pages	7
Journal	Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	957
Early online date	10 Jan 2020
DOIs	https://doi.org/10.1016/j.nima.2020.163397
Publication status	Published - 21 Mar 2020

Keywords

Fission fragment charge
SRIM
Ionization chamber
Sub-Bragg peak spectroscopy
Lohengrin
Fission fragment range

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10.1016/j.nima.2020.163397Licence: CC BY

2020 01 03 Sosnin et al Fission finalFinal published version, 854 KBLicence: CC BY

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1 Article

Corrigendum to ”Fission fragment atomic number measurements using bragg detectors” [Nucl. Instrum. Methods Phys. Res. A 957 (2020) 163397]
Sosnin, N. V., Smith, A. G., Wright, T., Köster, U., Blanc, A., Nara Singh, B. S., Kennedy-Reid, R. L. & Davies, P. J., 21 Apr 2020, In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 960, 2 p., 163596.
Research output: Contribution to journal › Article › peer-review

Cite this

Sosnin, N. V., Smith, A. G., Wright, T., Köster, U., Blanc, A., Nara Singh, B. S., Kennedy-Reid, R. L., & Davies, P. J. (2020). Fission fragment atomic number measurements using Bragg detectors. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 957, Article 163397. https://doi.org/10.1016/j.nima.2020.163397

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title = "Fission fragment atomic number measurements using Bragg detectors",

abstract = "A Bragg detector with a Frisch grid and 1 metre-long time-of-flight section with microchannel plate assemblies was characterized at the Lohengrin fission fragment separator at the Institut Laue-Langevin (ILL) by measuring 235U fission fragments of selected masses and energies at the Lohengrin focal plane. The aim of the measurements was to investigate the response of Bragg detectors to differing nuclear charge states. Energy-loss and a signal-risetime dependent parameters were defined and extracted from the accumulated signal pulse shapes, and their behaviour as a function of fragment velocity was investigated. The experimental results are compared to a SRIM-2013 simulation. Measurements of fission fragment ranges in isobutane are presented. Average proton numbers for measured fragment masses were identified and could be resolved by the parameters, which exhibited monotonic variation with charge. The results differed from SRIM both in trends and in values, with SRIM simulations exhibiting non-monotonic behaviour with proton number.",

keywords = "Fission fragment charge, SRIM, Ionization chamber, Sub-Bragg peak spectroscopy, Lohengrin, Fission fragment range",

author = "N.V. Sosnin and A.G. Smith and T. Wright and U. K{\"o}ster and A. Blanc and {Nara Singh}, B.S. and R.L. Kennedy-Reid and P.J. Davies",

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doi = "10.1016/j.nima.2020.163397",

language = "English",

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T1 - Fission fragment atomic number measurements using Bragg detectors

AU - Sosnin, N.V.

AU - Smith, A.G.

AU - Wright, T.

AU - Köster, U.

AU - Blanc, A.

AU - Nara Singh, B.S.

AU - Kennedy-Reid, R.L.

AU - Davies, P.J.

PY - 2020/3/21

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N2 - A Bragg detector with a Frisch grid and 1 metre-long time-of-flight section with microchannel plate assemblies was characterized at the Lohengrin fission fragment separator at the Institut Laue-Langevin (ILL) by measuring 235U fission fragments of selected masses and energies at the Lohengrin focal plane. The aim of the measurements was to investigate the response of Bragg detectors to differing nuclear charge states. Energy-loss and a signal-risetime dependent parameters were defined and extracted from the accumulated signal pulse shapes, and their behaviour as a function of fragment velocity was investigated. The experimental results are compared to a SRIM-2013 simulation. Measurements of fission fragment ranges in isobutane are presented. Average proton numbers for measured fragment masses were identified and could be resolved by the parameters, which exhibited monotonic variation with charge. The results differed from SRIM both in trends and in values, with SRIM simulations exhibiting non-monotonic behaviour with proton number.

AB - A Bragg detector with a Frisch grid and 1 metre-long time-of-flight section with microchannel plate assemblies was characterized at the Lohengrin fission fragment separator at the Institut Laue-Langevin (ILL) by measuring 235U fission fragments of selected masses and energies at the Lohengrin focal plane. The aim of the measurements was to investigate the response of Bragg detectors to differing nuclear charge states. Energy-loss and a signal-risetime dependent parameters were defined and extracted from the accumulated signal pulse shapes, and their behaviour as a function of fragment velocity was investigated. The experimental results are compared to a SRIM-2013 simulation. Measurements of fission fragment ranges in isobutane are presented. Average proton numbers for measured fragment masses were identified and could be resolved by the parameters, which exhibited monotonic variation with charge. The results differed from SRIM both in trends and in values, with SRIM simulations exhibiting non-monotonic behaviour with proton number.

KW - Fission fragment charge

KW - SRIM

KW - Ionization chamber

KW - Sub-Bragg peak spectroscopy

KW - Lohengrin

KW - Fission fragment range

U2 - 10.1016/j.nima.2020.163397

DO - 10.1016/j.nima.2020.163397

M3 - Article

SN - 0168-9002

VL - 957

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

M1 - 163397

ER -

Fission fragment atomic number measurements using Bragg detectors

Abstract

Keywords

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Research output

Corrigendum to ”Fission fragment atomic number measurements using bragg detectors” [Nucl. Instrum. Methods Phys. Res. A 957 (2020) 163397]

Cite this