Measurement of material isotopics and atom number ratio with α-particle spectroscopy for a NIFFTE fission Time Projection Chamber actinide target

(The NIFFTE Collaboration)

doi:10.1016/j.nima.2021.165864

Measurement of material isotopics and atom number ratio with α-particle spectroscopy for a NIFFTE fission Time Projection Chamber actinide target

(The NIFFTE Collaboration)

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

3 Scopus citations

Abstract

We present the results of a measurement of isotopic concentrations and atomic number ratio of a double-sided actinide target using α-spectroscopy and mass spectrometry. The double-sided actinide target, with predominantly ²³⁹Pu on one side and ²³⁵U on the other, was used in the fission Time Projection Chamber (fissionTPC) for a measurement of the neutron-induced fission cross-section ratio between the two isotopes. The measured atomic number ratio is needed to extract an absolute measurement fission cross-section ratio. The ²³⁹Pu/²³⁵U atom number ratio was measured with a combination of mass spectrometry and α-spectroscopy with a planar silicon detector achieving uncertainties of less than 1%. Different strategies for estimating isotopic concentration from the α-spectrum are presented to demonstrate the potential of these methods for non-destructive target assay. We found that a combination of fitting spectra with constraints from mass spectrometry, and summing counts in a region of the spectrum provided the most consistent results with the lowest uncertainty.

Original language	English
Article number	165864
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	1021
DOIs	https://doi.org/10.1016/j.nima.2021.165864
State	Published - Jan 1 2022
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2021

Keywords

Alpha spectroscopy
Least-squares
Mass spectrometry

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10.1016/j.nima.2021.165864

Cite this

(The NIFFTE Collaboration) (2022). Measurement of material isotopics and atom number ratio with α-particle spectroscopy for a NIFFTE fission Time Projection Chamber actinide target. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1021, Article 165864. https://doi.org/10.1016/j.nima.2021.165864

@article{4479e08067934f63b81745b23e4738f8,

title = "Measurement of material isotopics and atom number ratio with α-particle spectroscopy for a NIFFTE fission Time Projection Chamber actinide target",

abstract = "We present the results of a measurement of isotopic concentrations and atomic number ratio of a double-sided actinide target using α-spectroscopy and mass spectrometry. The double-sided actinide target, with predominantly 239Pu on one side and 235U on the other, was used in the fission Time Projection Chamber (fissionTPC) for a measurement of the neutron-induced fission cross-section ratio between the two isotopes. The measured atomic number ratio is needed to extract an absolute measurement fission cross-section ratio. The 239Pu/235U atom number ratio was measured with a combination of mass spectrometry and α-spectroscopy with a planar silicon detector achieving uncertainties of less than 1%. Different strategies for estimating isotopic concentration from the α-spectrum are presented to demonstrate the potential of these methods for non-destructive target assay. We found that a combination of fitting spectra with constraints from mass spectrometry, and summing counts in a region of the spectrum provided the most consistent results with the lowest uncertainty.",

keywords = "Alpha spectroscopy, Least-squares, Mass spectrometry",

author = "{(The NIFFTE Collaboration)} and M. Monterial and Schmitt, {K. T.} and C. Prokop and E. Leal-Cidoncha and M. Anastasiou and Bowden, {N. S.} and J. Bundgaard and Casperson, {R. J.} and Cebra, {D. A.} and T. Classen and Dongwi, {D. H.} and N. Fotiades and J. Gearhart and V. Geppert-Kleinrath and U. Greife and C. Hagmann and M. Heffner and D. Hensle and D. Higgins and Isenhower, {L. D.} and K. Kazkaz and A. Kemnitz and J. King and Klay, {J. L.} and J. Latta and W. Loveland and Magee, {J. A.} and B. Manning and Mendenhall, {M. P.} and S. Mosby and D. Neudecker and S. Sangiorgio and B. Seilhan and L. Snyder and F. Tovesson and Towell, {R. S.} and N. Walsh and Watson, {T. S.} and L. Yao and W. Younes",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2022",

month = jan,

day = "1",

doi = "10.1016/j.nima.2021.165864",

language = "English",

volume = "1021",

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(The NIFFTE Collaboration) 2022, 'Measurement of material isotopics and atom number ratio with α-particle spectroscopy for a NIFFTE fission Time Projection Chamber actinide target', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 1021, 165864. https://doi.org/10.1016/j.nima.2021.165864

Measurement of material isotopics and atom number ratio with α-particle spectroscopy for a NIFFTE fission Time Projection Chamber actinide target. / (The NIFFTE Collaboration).
In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 1021, 165864, 01.01.2022.

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

TY - JOUR

T1 - Measurement of material isotopics and atom number ratio with α-particle spectroscopy for a NIFFTE fission Time Projection Chamber actinide target

AU - (The NIFFTE Collaboration)

AU - Monterial, M.

AU - Schmitt, K. T.

AU - Prokop, C.

AU - Leal-Cidoncha, E.

AU - Anastasiou, M.

AU - Bowden, N. S.

AU - Bundgaard, J.

AU - Casperson, R. J.

AU - Cebra, D. A.

AU - Classen, T.

AU - Dongwi, D. H.

AU - Fotiades, N.

AU - Gearhart, J.

AU - Geppert-Kleinrath, V.

AU - Greife, U.

AU - Hagmann, C.

AU - Heffner, M.

AU - Hensle, D.

AU - Higgins, D.

AU - Isenhower, L. D.

AU - Kazkaz, K.

AU - Kemnitz, A.

AU - King, J.

AU - Klay, J. L.

AU - Latta, J.

AU - Loveland, W.

AU - Magee, J. A.

AU - Manning, B.

AU - Mendenhall, M. P.

AU - Mosby, S.

AU - Neudecker, D.

AU - Sangiorgio, S.

AU - Seilhan, B.

AU - Snyder, L.

AU - Tovesson, F.

AU - Towell, R. S.

AU - Walsh, N.

AU - Watson, T. S.

AU - Yao, L.

AU - Younes, W.

PY - 2022/1/1

Y1 - 2022/1/1

N2 - We present the results of a measurement of isotopic concentrations and atomic number ratio of a double-sided actinide target using α-spectroscopy and mass spectrometry. The double-sided actinide target, with predominantly 239Pu on one side and 235U on the other, was used in the fission Time Projection Chamber (fissionTPC) for a measurement of the neutron-induced fission cross-section ratio between the two isotopes. The measured atomic number ratio is needed to extract an absolute measurement fission cross-section ratio. The 239Pu/235U atom number ratio was measured with a combination of mass spectrometry and α-spectroscopy with a planar silicon detector achieving uncertainties of less than 1%. Different strategies for estimating isotopic concentration from the α-spectrum are presented to demonstrate the potential of these methods for non-destructive target assay. We found that a combination of fitting spectra with constraints from mass spectrometry, and summing counts in a region of the spectrum provided the most consistent results with the lowest uncertainty.

AB - We present the results of a measurement of isotopic concentrations and atomic number ratio of a double-sided actinide target using α-spectroscopy and mass spectrometry. The double-sided actinide target, with predominantly 239Pu on one side and 235U on the other, was used in the fission Time Projection Chamber (fissionTPC) for a measurement of the neutron-induced fission cross-section ratio between the two isotopes. The measured atomic number ratio is needed to extract an absolute measurement fission cross-section ratio. The 239Pu/235U atom number ratio was measured with a combination of mass spectrometry and α-spectroscopy with a planar silicon detector achieving uncertainties of less than 1%. Different strategies for estimating isotopic concentration from the α-spectrum are presented to demonstrate the potential of these methods for non-destructive target assay. We found that a combination of fitting spectra with constraints from mass spectrometry, and summing counts in a region of the spectrum provided the most consistent results with the lowest uncertainty.

KW - Alpha spectroscopy

KW - Least-squares

KW - Mass spectrometry

UR - http://www.scopus.com/inward/record.url?scp=85118569978&partnerID=8YFLogxK

U2 - 10.1016/j.nima.2021.165864

DO - 10.1016/j.nima.2021.165864

M3 - Article

AN - SCOPUS:85118569978

SN - 0168-9002

VL - 1021

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 - 165864

ER -

Measurement of material isotopics and atom number ratio with α-particle spectroscopy for a NIFFTE fission Time Projection Chamber actinide target

Abstract

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Keywords

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