Properties of Diamond-Based Neutron Detectors Operated in Harsh Environments

Angelone, M.; Verona, C.

doi:10.3390/jne2040032

Cited by 27 publications

(13 citation statements)

References 213 publications

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“…It should be noted that the polarization effect [5,6,26] was not observed during the experiment on registration of monoenergetic DT-neutrons -the data at the beginning and at the end of the measurement set did not differ within the margin of uncertainties.…”

Section: Measurement Resultsmentioning

confidence: 89%

“…They differ from similar devices in low sensitivity to the accompanying gammaradiation, as well as small size of sensitive element, which makes it possible to measure the spectral characteristics of neutron fields without creating significant disturbances in these fields. Diamond detector is radiation-resistant and is capable of working at high ambient temperature [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Experimental characterisation of diamond-based neutron spectrometer

et al. 2022

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The results of testing and characterisation of the neutron spectrometer based on a diamond detector are presented. It is shown that spectrometer calibration with monoenergetic electrons and alpha-particles leads to different results. The energy resolution of the spectrometer is estimated based on the experiments with alpha-particles and with DT-neutrons from NG-150M neutron generator. It has been shown experimentally that for neutrons with an energy of 14 MeV the energy resolution of a diamond-based spectrometer is 0.6%.

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Section: Measurement Resultsmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Experimental characterisation of diamond-based neutron spectrometer

et al. 2022

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“…Recent advancements in fabricating artificial SCDs through chemical vapour deposition (CVD) processes have made detector-grade SCDs commercially available [17]. A single crystal CVD diamond detector (SDD) can detect fast neutrons through elastic collisions and (n,α) reactions [18]. Moreover, by placing a foil of lithium compounds on the surface of the SCD, it can react with neutrons via the 6 Li(n,α) 3 H reaction.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous measurements for fast neutron flux and tritium production rate using pulse shape discrimination and single crystal CVD diamond detector

Kobayashi,

Yoshihashi,

Ogawa

et al. 2024

Nucl. Fusion

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This paper presents the development of a simultaneous measurement method for fast neutron energy spectra and tritium production rates within mixed radiation fields using a single crystal Chemical Vapor Deposition (CVD) diamond detector (SDD) combined with a lithium fluoride (LiF) foil. The method involves the separation of pulses with rectangular shapes and the determination of the depth position within the single crystal diamond (SCD) struck by fast neutrons or nuclear reaction products including recoil tritons from the LiF foil based on pulse width, extracting pulse events occurred at the specific bulk region and the surface region of the SCD. Subsequently, unfolding techniques were employed to analyse the energy deposition spectrum of pulses at the specific bulk region which are induced only by fast neutrons, allowing the deduction of the fast neutron energy spectrum. To evaluate the tritium production rate, the energy deposition spectrum of pulses from events occurring at the SCD surface facing the LiF foil was analysed. By estimating the energy deposition spectrum solely induced by fast neutrons striking the SCD surface and subtracting it from the energy deposition spectrum of events at the SCD surface, the contribution of energetic ions, such as recoil tritons generated by the 6Li(n,α)3H reaction in the LiF foil, was determined. The fast neutron flux and tritium production rate obtained through this study were consistent with particle transport calculations, demonstrating the successful development of a method suitable for performance testing of fusion reactor blankets.

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“…High-quality “electronic-grade” diamond samples with an impurity concentration three orders of magnitude lower than natural diamond are now available at a relatively low cost, thanks to the optimization of the chemical vapor deposition (CVD) technique. Dosimeters based on CVD diamond are, indeed, widely used for EBRT [ 14 , 15 , 16 , 17 , 18 ] and IORT [ 19 , 20 , 21 ], as well as for soft X-rays [ 22 , 23 , 24 ], UV light [ 25 , 26 ], charged particles [ 27 , 28 , 29 ], and neutrons [ 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

A Highly Versatile X-ray and Electron Beam Diamond Dosimeter for Radiation Therapy and Protection

et al. 2023

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Radiotherapy is now recognized as a pillar in the fight against cancer. Two different types are currently used in clinical practice: (1) external beam radiotherapy, using high-energy X-rays or electron beams, both in the MeV-range, and (2) intraoperative radiotherapy, using low-energy X-rays (up to 50 keV) and MeV-range electron beams. Versatile detectors able to measure the radiation dose independently from the radiation nature and energy are therefore extremely appealing to medical physicists. In this work, a dosimeter based on a high-quality single-crystal synthetic diamond sample was designed, fabricated and characterized under low-energy X-rays, as well as under high-energy pulsed X-rays and electron beams, demonstrating excellent linearity with radiation dose and dose-rate. Detector sensitivity was measured to be 0.299 ± 0.002 µC/Gy under 6 MeV X-ray photons, and 0.298 ± 0.004 µC/Gy under 6 MeV electrons, highlighting that the response of the diamond dosimeter is independent of the radiation nature. Moreover, in the case of low-energy X-rays, an extremely low limit of detection (23 nGy/s) was evaluated, pointing out the suitability of the device to radiation protection dosimetry.

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Properties of Diamond-Based Neutron Detectors Operated in Harsh Environments

Cited by 27 publications

References 213 publications

Experimental characterisation of diamond-based neutron spectrometer

Experimental characterisation of diamond-based neutron spectrometer

Simultaneous measurements for fast neutron flux and tritium production rate using pulse shape discrimination and single crystal CVD diamond detector

A Highly Versatile X-ray and Electron Beam Diamond Dosimeter for Radiation Therapy and Protection

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