Design of a compact D–D neutron generator

Huang, Z.; Wang, Junrun; Ma, Zhixin; Lü, Xiaolong; Zheng, Wei; Zhang, Shuangjiao; Yuguo, Liu; Zhang, Zimin; Zhang, Yu; Yao, Ze

doi:10.1016/j.nima.2018.07.005

Cited by 12 publications

(2 citation statements)

References 18 publications

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“…In addition, the material improved resistance to embrittlement caused by hydrogen (created in fusion reaction). Huang et al [17] prepared D-D neutron tube target with molybdenum, which had good mechanical strength and better conductivity. The D-D neutron yield reached 1×10 8 n s −1 .…”

Section: + = +mentioning

confidence: 99%

The influence of target film material and coating on neutron yield and sputtering yield

Liu¹,

Lu²,

Xu³

et al. 2022

Mater. Res. Express

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The long-life, high yield deuterium-deuterium (D-D) neutron tube has become one of the research hotspots. Here, deuterated polyethylene target, heavy water target and titanium target were investigated by Stopping and Range of Ions in Matter (SRIM). The calculation showed that the deuterated polyethylene target, which was a potential target material, had the highest yield at an incident energy of 120 keV. Further, considering the unfavorable factors such as impurity ions and high temperature, the coating was used to protect the target material. Diamond, boron carbide, boron nitride, silicon carbide, and aluminum carbide were selected. The simulation results showed that the diamond composite deuterated polyethylene film had the best sputtering resistance, and the aluminum nitride composite heavy water target film had the lowest sputtering yield. The two coating materials shield the target, reduced the energy loss of incident ions, and provided a new method for the research of high yield and long life neutron tube.

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Section: + = +mentioning

confidence: 99%

The influence of target film material and coating on neutron yield and sputtering yield

Liu¹,

Lu²,

Xu³

et al. 2022

Mater. Res. Express

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show abstract

“…With the advantages of light weight, transportability, safety, and adjustable neutron yield, neutron generators have been widely used in oil logging [ 1 ], neutron activation analysis (NAA) [ 2 , 3 ], neutron radiography [ 4 , 5 , 6 ], and boron neutron capture therapy (BNCT) [ 7 , 8 ]. Common neutron generators use 2 H(d,n) 3 He (D–D) and 2 H(t,n) 4 He (D–T) fusion reactions to produce neutrons with energies of 2.5 and 14.1 MeV, respectively [ 9 ].…”

Section: Introductionmentioning

confidence: 99%

Structural and Secondary Electron Yield Properties of Titanium–Palladium Films with Laser-Treated Copper Substrate for Application in Neutron Generators

Gao

Wang

et al. 2021

Materials

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Secondary electron emission (SEE) of the oxygen-free high-conductivity copper (OFHC) target surface in neutron generators limits the stability and improvement of the neutron yield. A novel-type target of titanium–palladium films coated on laser-treated OFHC target substrate was proposed and explored in this work to obtain low secondary electron yield (SEY) without introducing any components. The combination of Ti–Pd films and laser-treated OFHC substrate can effectively suppress secondary electron emission and enhance the adsorption ability to hydrogen isotopes with the existence of Pd film. The surface morphologies, surface chemical states, and SEYs of Ti–Pd films with laser-treated OFHC substrate were studied systematically for the first time. The XPS results showed that the laser-treated OFHC substrate surface was basically covered by Pd film. However, the Pd film surface was partially oxidized, with percentages of 21.31 and 10.02% for PdO and PdO2, respectively. The SEYs of Ti–Pd films with laser-treated OFHC substrate were all below 1 within the investigated primary energy range of 100–3000 eV, which would be sufficient for application in neutron generators. Specifically, the maximum SEY (δmax) of laser-treated OFHC substrate coated by Ti–Pd films was 0.87 with corresponding incident electron energy of 400 eV.

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Transparent Glass Composite Scintillator with High Crystallinity for Efficient Thermal Neutron Detection

Wang,

Zhang,

Chen

et al. 2024

Adv Funct Materials

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The sensitive and rapid detection of thermal neutrons holds significant importance in various fields such as energy utilization, medical treatment, and national defense. However, the available thermal neutron scintillator is difficult to reach this target, mainly limited by the optical and scintillating performance. Herein, the in situ crystallization strategy of glass to construct scintillation glass composites for efficient thermal neutron detection is proposed. The congruent crystallization of the hybridized alkali earth silicate glass system may not only achieve high crystallinity, but also will keep the refractive indexing matching between the precipitated crystal and precursor glass phases. The prepared glass composites feature high luminescence efficiency, optical transmission and excellent neutron response properties. These factors collectively contribute to the robust neutron scintillation performance with a light output of ≈36 000 photons/neutron, which represents the highest value among glass‐based scintillators. Moreover, the composite configuration brings about the additional function of thermal neutron and γ‐ray discrimination. By using this composite scintillator, the neutron detector is constructed and demonstrates its application for detecting thermal neutron and distinguishing it from γ‐ray in an online way. The studies prove that glass composites with high crystallinity are expected to be promising candidates for a new generation of multifunctional neutron detectors.

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Design of a compact D–D neutron generator

Cited by 12 publications

References 18 publications

The influence of target film material and coating on neutron yield and sputtering yield

The influence of target film material and coating on neutron yield and sputtering yield

Structural and Secondary Electron Yield Properties of Titanium–Palladium Films with Laser-Treated Copper Substrate for Application in Neutron Generators

Transparent Glass Composite Scintillator with High Crystallinity for Efficient Thermal Neutron Detection

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