Determination of Plutonium Isotopic Content by Microcalorimeter Gamma-Ray Spectroscopy

Hoover, A.; Winkler, R.; Rabin, Michael W.; Vo, Duc; Ullom, Joel N.; Bennett, Douglas A.; Doriese, W. B.; Fowler, Joseph W.; Horansky, Robert D.; Schmidt, D. R.; Vale, Leila R.; Schaffer, K. K.

doi:10.1109/tns.2013.2249091

Cited by 21 publications

(32 citation statements)

References 18 publications

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“…As reviewed by [1], microcalorimetry has a considerable advantage. Cryogenic microcalorimeters are fundamentally limited by thermal noise processes.…”

Section: Microcalorimetrymentioning

confidence: 99%

“…At very low temperatures (near 100 mK), the spectral resolution of a microcalorimeter can be over an order of magnitude better than HPGe. Depending on detector design parameters, energy resolution as good as 22 eV full width half maximum at 100 keV has been achieved [1,2]. Modern cryogenic refrigeration technology allows for routine operation at temperatures below 100 mK without any liquid cryogens.…”

Section: Microcalorimetrymentioning

confidence: 99%

“…This fitting currently includes peak tail fitting and the use of two Gaussian functions with difference variances to empirically model the impact of combining counts over hundreds of individual pixels in the microarray [1].…”

Section: Microcalorimetrymentioning

confidence: 99%

“…In nonproliferation activities, there is an ongoing need for high-quality measurement of the abundances of the Pu isotopes [1]. Microcalorimetry is a promising new measurement method that is based on the temperature rise induced by gamma rays emitted from decay of isotopes when they interact in transition edge sensors.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Exploring the Impact of Nuclear Data Uncertainties in Ultra-high Resolution Gamma Spectroscopy for Isotopic Analysis Using Approximate Bayesian Computation

Burr¹,

Hoover²,

Croft³

et al. 2015

Nuclear Data Sheets

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“…As reviewed by [1], microcalorimetry has a considerable advantage. Cryogenic microcalorimeters are fundamentally limited by thermal noise processes.…”

Section: Microcalorimetrymentioning

confidence: 99%

Section: Microcalorimetrymentioning

confidence: 99%

Section: Microcalorimetrymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Exploring the Impact of Nuclear Data Uncertainties in Ultra-high Resolution Gamma Spectroscopy for Isotopic Analysis Using Approximate Bayesian Computation

Burr¹,

Hoover²,

Croft³

et al. 2015

Nuclear Data Sheets

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“…In order to maintain effective nuclear safeguards, it is necessary to establish the non-destructive inspection of the nuclide elements like the spent nuclear fuel, with high efficiency, safety and more accuracy. These requirements lead us to the precise γ-ray spectroscopy using the ultra-high energy resolution superconducting transition edge sensor (TES) [1], [2].…”

Section: Introductionmentioning

confidence: 99%

Superconducting Transition Edge Sensor for Gamma-Ray Spectroscopy

Ohno

Irimatsugawa

Takahashi

et al. 2017

IEICE Trans. Electron.

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SUMMARY Superconducting Transition edge sensor (TES) coupled with a heavy metal absorber is a promising microcalorimeter for Gammaray (γ-ray) spectroscopy with ultra-high energy resolution and high detection efficiency. It is very useful for the non-destructed inspection of the nuclide materials. High resolving power of γ-ray peaks can precisely identify multiple nuclides such as Plutonium (Pu) and Actinides with high efficiency and safety. For this purpose, we have developed the TES coupled with a tin absorber. We suggest the new device structure using the gold bump post which connects a tin absorber to the thermometer of the superconducting Ir/Au bilayer. High thermal conductivity of the gold bump post realized strong thermal coupling between the thermometer and the γ-ray absorber, and it brought the benefit of large pulse height and fast decay time. Our TES achieved the good energy resolution of 84 eV FWHM at 59.5 keV. Using this TES device, we also succeeded to demonstrate the nuclear material measurements. In the measurement of a Pu sample, we detected the sharp γ-ray peaks from 239 Pu and 240 Pu, and of a Fission Products (FP) sample, we observed fluorescence X-ray peaks emitted by the elements contained in FP. The TES could resolve the fine structures of each fluorescence X-ray line like K α1 and K α2 . In addition to that, we developed the TES coupled with tantalum absorber, which is expected to have higher absorption efficiency for γ-rays. This device reported the best energy resolution of 465 eV at 662 keV.

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Implementation of Microcalorimeter Array Technology for Safeguards of Nuclear Material

et al. 2018

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Determination of Plutonium Isotopic Content by Microcalorimeter Gamma-Ray Spectroscopy

Cited by 21 publications

References 18 publications

Exploring the Impact of Nuclear Data Uncertainties in Ultra-high Resolution Gamma Spectroscopy for Isotopic Analysis Using Approximate Bayesian Computation

Exploring the Impact of Nuclear Data Uncertainties in Ultra-high Resolution Gamma Spectroscopy for Isotopic Analysis Using Approximate Bayesian Computation

Superconducting Transition Edge Sensor for Gamma-Ray Spectroscopy

Implementation of Microcalorimeter Array Technology for Safeguards of Nuclear Material

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