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- W4205122596 abstract "Single-crystal diamond (SCD) detectors show promise as neutron spectrometers. They have been increasingly used for neutron monitoring of high-flux deuterium plasmas. In this article, a high-performance SCD detector is exposed to D-T neutrons at different angles to measure the energy spectra. The results show that the diamond detector is stable under neutron irradiation fluence of <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$1.63times10$ </tex-math></inline-formula> <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>10</sup> n/cm <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>2</sup> during the 2 h testing. Its detection efficiency for <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>12</sup> C (n, <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$alpha$ </tex-math></inline-formula> ) <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>9</sup> Be is (3.31 ± 0.11) <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$times ,, 10$ </tex-math></inline-formula> <sup xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>−4</sup> counts/n, which is in good agreement with a Monte Carlo simulation predicted by a Geant4 simulation. The deviation in the detection efficiency between the simulation and experimental results is as low as 0.61%. In addition, a response matrix is created and Gaussian broadening has been applied to obtain a good alignment between the measured and simulated results. Finally, a variety of neutron spectrum unfolding methods, namely, the non-negative least-squares algorithm, the Gravel algorithm, the Gold algorithm, and the Lucy–Richardson algorithm, are applied and compared in detail, demonstrating that using a SCD detector, the precise energy distribution of the D-T neutrons from different angles can be obtained by exploiting the spectrum unfolding methods." @default.
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- W4205122596 date "2022-01-01" @default.
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- W4205122596 title "A Precise Measurement of D-T Neutrons With a Single-Crystal Diamond Detector" @default.
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