Assessment of actinide mass embedded in large concrete waste packages by photon interrogation and photofission

Gmar, M.; Jeanneau, Fabien; Lainé, Frédéric; Makil, Hamid; Poumarède, Bénédicte; Tola, F.

doi:10.1016/j.apradiso.2005.05.010

Cited by 42 publications

(24 citation statements)

References 3 publications

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“…Nuclear fission is the most important multiplicative process involved in non-destructive active interrogation. Among others, unique delayed gamma-ray spectra exist for fissionable isotopes and can be used for isotopic composition measurement [4][5][6][7][8][9][10][11][12][13][14][15][16]. A major challenge in utilizing delayed fission gamma rays emitted after active interrogation for safeguards applications is to perform high-resolution spectroscopy measurements at an ultra-high throughput rate [17].…”

Section: Introductionmentioning

confidence: 99%

Study on a digital pulse processing algorithm based on template-matching for high-throughput spectroscopy

Wen

Yang

2015

Nuclear Instruments and Methods in Physics Research Section A:

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a b s t r a c t A major challenge in utilizing spectroscopy techniques for nuclear safeguards is to perform highresolution measurements at an ultra-high throughput rate. Traditionally, piled-up pulses are rejected to ensure good energy resolution. To improve throughput rate, high-pass filters are normally implemented to shorten pulses. However, this reduces signal-to-noise ratio and causes degradation in energy resolution. In this work, a pulse pile-up recovery algorithm based on template-matching was proved to be an effective approach to achieve high-throughput gamma ray spectroscopy. First, a discussion of the algorithm was given in detail. Second, the algorithm was then successfully utilized to process simulated piled-up pulses from a scintillator detector. Third, the algorithm was implemented to analyze high rate data from a NaI detector, a silicon drift detector and a HPGe detector. The promising results demonstrated the capability of this algorithm to achieve high-throughput rate without significant sacrifice in energy resolution. The performance of the template-matching algorithm was also compared with traditional shaping methods.

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Section: Introductionmentioning

confidence: 99%

Study on a digital pulse processing algorithm based on template-matching for high-throughput spectroscopy

Wen

Yang

2015

Nuclear Instruments and Methods in Physics Research Section A:

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“…The SAPHIR facility at CEA Saclay is experienced in radioactive parcel characterization using delayed neutrons [1,2]. An intense g-ray beam is created by the slowing down of electrons in a copper or a tungsten target.…”

Section: Introductionmentioning

confidence: 99%

Neutron detection in high γ background using a micromegas detector

Pancin

Aune

Berthoumieux

et al. 2007

Nuclear Instruments and Methods in Physics Research Section A:

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“…Delayed signals are emitted seconds or even minutes after the photon irradiation making it easier to be distinguished from the interrogating radiation. Linac-based, advanced inspection techniques utilizing the delayed signals after photon induced fission have been extensively studied for homeland security and safeguards applications [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. Previous research also showed that a unique delayed gamma ray energy spectrum exists for each fissionable isotope [6-12, 14,15,17, 19-21].…”

Section: Introductionmentioning

confidence: 99%

Pulsed photofission delayed gamma ray detection for nuclear material identification

Kavouras

Wen

Norman

et al. 2012

2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC)

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Abstract-Innovative systems with increased sensitivity and resolution are in great demand to detect diversion and to prevent misuse in support of nuclear materials management for the U.S. fuel cycle. Nuclear fission is the most important multiplicative process involved in non-destructive active interrogation. This process produces the most easily recognizable signature for nuclear materials. High-energy gamma rays can also excite a nucleus and cause fission through a process known as photofission. After photofission reactions, delayed signals are easily distinguishable from the interrogating radiation. Linacbased, advanced inspection techniques utilizing the fission signals after photofission have been extensively studied for homeland security applications. Previous research also showed that a unique delayed gamma ray energy spectrum exists for each fissionable isotope. Isotopic composition measurement methods based on delayed gamma ray spectroscopy will be the primary focus of this work.

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Assessment of actinide mass embedded in large concrete waste packages by photon interrogation and photofission

Cited by 42 publications

References 3 publications

Study on a digital pulse processing algorithm based on template-matching for high-throughput spectroscopy

Study on a digital pulse processing algorithm based on template-matching for high-throughput spectroscopy

Neutron detection in high γ background using a micromegas detector

Pulsed photofission delayed gamma ray detection for nuclear material identification

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