On the traceably accurate voltage calibration of electrostatic accelerators

Résultats de recherche: Contribution à un journal/une revueArticle

Résumé

We describe in detail a calibration method for the terminal voltage of small accelerators used for ion beam analysis, with the elastic resonance of 16O(α,α)16O at 3038 keV as the intrinsic measurement standard. The beam energy relative to this resonance is determined with a precision around 300 eV and an evaluated reproducibility of 1.0 keV. We show that this method is both robust and convenient, and demonstrate consistency with calibration relative to three other independent methods: using radioactive sources and using the resonant 27Al(p,γ)28Si and non-resonant 16O(p,γ)17F direct capture reactions. We re-evaluate the literature and show that the peak in the cross-section function is at 3038.1 ± 2.3 keV. By comparing the results obtained with 16O(α,α)16O to the other calibration methods we show that this uncertainty can be reduced to 1.3 keV.

langue originaleAnglais
Pages (de - à)173-183
Nombre de pages11
journalNuclear instruments and methods in physics research B
Volume349
Les DOIs
étatPublié - 15 avr. 2015

Empreinte digitale

Electrostatic accelerators
accelerators
Calibration
electrostatics
Electric potential
electric potential
ion beams
Ion beams
Particle accelerators
cross sections
energy

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title = "On the traceably accurate voltage calibration of electrostatic accelerators",
abstract = "We describe in detail a calibration method for the terminal voltage of small accelerators used for ion beam analysis, with the elastic resonance of 16O(α,α)16O at 3038 keV as the intrinsic measurement standard. The beam energy relative to this resonance is determined with a precision around 300 eV and an evaluated reproducibility of 1.0 keV. We show that this method is both robust and convenient, and demonstrate consistency with calibration relative to three other independent methods: using radioactive sources and using the resonant 27Al(p,γ)28Si and non-resonant 16O(p,γ)17F direct capture reactions. We re-evaluate the literature and show that the peak in the cross-section function is at 3038.1 ± 2.3 keV. By comparing the results obtained with 16O(α,α)16O to the other calibration methods we show that this uncertainty can be reduced to 1.3 keV.",
keywords = "Accurate calibration, Elastic scattering cross section, Total-IBA, Uncertainty analysis",
author = "Julien Colaux and G. Terwagne and C. Jeynes",
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On the traceably accurate voltage calibration of electrostatic accelerators. / Colaux, Julien; Terwagne, G.; Jeynes, C.

Dans: Nuclear instruments and methods in physics research B, Vol 349, 15.04.2015, p. 173-183.

Résultats de recherche: Contribution à un journal/une revueArticle

TY - JOUR

T1 - On the traceably accurate voltage calibration of electrostatic accelerators

AU - Colaux, Julien

AU - Terwagne, G.

AU - Jeynes, C.

PY - 2015/4/15

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N2 - We describe in detail a calibration method for the terminal voltage of small accelerators used for ion beam analysis, with the elastic resonance of 16O(α,α)16O at 3038 keV as the intrinsic measurement standard. The beam energy relative to this resonance is determined with a precision around 300 eV and an evaluated reproducibility of 1.0 keV. We show that this method is both robust and convenient, and demonstrate consistency with calibration relative to three other independent methods: using radioactive sources and using the resonant 27Al(p,γ)28Si and non-resonant 16O(p,γ)17F direct capture reactions. We re-evaluate the literature and show that the peak in the cross-section function is at 3038.1 ± 2.3 keV. By comparing the results obtained with 16O(α,α)16O to the other calibration methods we show that this uncertainty can be reduced to 1.3 keV.

AB - We describe in detail a calibration method for the terminal voltage of small accelerators used for ion beam analysis, with the elastic resonance of 16O(α,α)16O at 3038 keV as the intrinsic measurement standard. The beam energy relative to this resonance is determined with a precision around 300 eV and an evaluated reproducibility of 1.0 keV. We show that this method is both robust and convenient, and demonstrate consistency with calibration relative to three other independent methods: using radioactive sources and using the resonant 27Al(p,γ)28Si and non-resonant 16O(p,γ)17F direct capture reactions. We re-evaluate the literature and show that the peak in the cross-section function is at 3038.1 ± 2.3 keV. By comparing the results obtained with 16O(α,α)16O to the other calibration methods we show that this uncertainty can be reduced to 1.3 keV.

KW - Accurate calibration

KW - Elastic scattering cross section

KW - Total-IBA

KW - Uncertainty analysis

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