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Neutron Scattering and Its Applications
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Neutron Scattering and Its Applications

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Optics and Lasers".

Deadline for manuscript submissions: 20 December 2024 | Viewed by 2133

Special Issue Editors

Dr. Yubin Ke

E-Mail Website
Guest Editor
1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100191, China
2. Spallation Neutron Source Science Center, Dongguan 528303, China
Interests: small-angle neutron scattering; precipitation kinetics; nano-structure
Dr. Hanqiu Jiang

E-Mail Website
Guest Editor
1. Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100191, China
2. Spallation Neutron Source Science Center, Dongguan 528303, China
Interests: small-angle neutron scattering; self-assembly; micelle

Special Issue Information

Dear Colleagues,

Neutron scattering has become an indispensable tool for the investigation of the structure and dynamics of condensed matter, for which Brockhouse and Shull were awarded with the Nobel Prize in 1994. With the development of reactor and spallation neutron sources, novel diffractometer- or spectrometer-based elastic and inelastic neutron scattering techniques have been developed. The advancement in neutron instrumentation makes it possible to unravel the structure and dynamic processes across space- and time- scales covering multiple orders of magnitude. As one of the cutting-edge technologies, neutron scattering finds applications in a diverse range of fields, including advanced materials, condensed physics, medical biology, energy and environment. This research topic welcomes original research papers, review articles and perspectives from, but not limited to, the following aspects:

  1. The fundamentals of neutron scattering and novel technologies ;
  2. Applications of elastic or inelastic neutron scattering techniques in multidisciplinary fields;
  3. Methods for neutron scattering data reduction, analysis and simulation;
  4. Recent developments in methodology, instrumentation, sample environment equipment and optical devices for neutron techniques.

Dr. Yubin Ke
Dr. Hanqiu Jiang
Guest Editors

Manuscript Submission Information

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Keywords

  • neutron scattering
  • structure
  • dynamic process
  • multidiscipline application
  • sample environment
  • neutron instrumentation
  • data treatment

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Published Papers (2 papers)

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Research

13 pages, 4959 KiB  
Article
Design and Initial Tests of a Fast Neutron Radiography Detector Prototype with Silicon Photomultiplier Readouts
by Xu Chen, Bin Tang, Ruofu Chen, Zhifu Zhu, Pingchuan Zhang, Qian Yu, Chang Huang, Shaojia Chen, Xiuku Wang, Hong Xu, Xiaojie Cai, Dawei Guo, Li Yu, Zhijia Sun, Yanfeng Wang and Yuntao Liu
Appl. Sci. 2024, 14(13), 5536; https://doi.org/10.3390/app14135536 - 26 Jun 2024
Viewed by 946
Abstract
Among non-destructive testing (NDT) techniques, fast neutron radiography with a higher penetration capability has achieved rapid advancements. However, the application of the radiography detector in many fast neutron imaging systems is limited by unfavorable detection efficiency and imaging spatial resolution. In this paper, [...] Read more.
Among non-destructive testing (NDT) techniques, fast neutron radiography with a higher penetration capability has achieved rapid advancements. However, the application of the radiography detector in many fast neutron imaging systems is limited by unfavorable detection efficiency and imaging spatial resolution. In this paper, a fast neutron radiography detector was designed, which was composed of a pixelated EJ200 scintillator array, a 16 × 16 silicon photomultiplier (SiPM) array, and capacitive multiplexing network readout electronics. The main parameters of the detector were optimized using Monte Carlo simulations. In addition, the prototype of the detector was fabricated and tested under a 14 MeV D-T neutron source. The preliminary test results demonstrated that the spatial resolution of the prototype reached 1.2 mm. Moreover, the conflict between spatial resolution and detection efficiency could be mitigated by using a pixelated scintillator structure. Overall, SiPMs enabled the extensive application of the imaging system because of their excellent photon detection performance, relatively low price, and joint possibility for large areas. Full article
(This article belongs to the Special Issue Neutron Scattering and Its Applications)
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19 pages, 672 KiB  
Article
Hydrogen Deuteride for Cold Neutron Production: A Model for the Double Differential Cross Section
by Eleonora Guarini, Douglas D. DiJulio, José I. Marquez Damian, Ubaldo Bafile and Milva Celli
Appl. Sci. 2024, 14(11), 4718; https://doi.org/10.3390/app14114718 - 30 May 2024
Cited by 1 | Viewed by 509
Abstract
The present work deals with the modeling of the response to neutrons of heteronuclear diatomic liquids, with special interest in the case of hydrogen deuteride (HD), as a possible candidate for the moderation process required in the production of cold neutrons. Preliminary evaluations [...] Read more.
The present work deals with the modeling of the response to neutrons of heteronuclear diatomic liquids, with special interest in the case of hydrogen deuteride (HD), as a possible candidate for the moderation process required in the production of cold neutrons. Preliminary evaluations of the model giving the neutron double differential cross section of a heteronuclear vibrating rotor were performed in the recent past by using, as a first approximation, the ideal gas law for the center-of-mass translational dynamics. Here, the state-of-the-art methodology (based on the use of quantum simulations of the velocity autocorrelation function) for predicting the neutron response of moderately quantum fluids (like molecular hydrogen and deuterium at low temperatures) is applied to the heteronuclear form of this molecular liquid. The unavailability of the double differential cross section experimental data on liquid HD still compels us to test the calculations only at an integral level, i.e., against the only available measurements of the total neutron cross section of HD. Despite the well-tested and parameter-free computational approach, which includes proper consideration of the quantum effects, the present findings on HD indicate the evident need for more accurate measurements of its total cross section in extended ranges of incident energy, as well as of an experimental determination of the double differential cross section of this mild quantum liquid. For further applicative purposes, a very useful by-product of this study is the determination of the self diffusion coefficient D of the HD in the liquid phase. Full article
(This article belongs to the Special Issue Neutron Scattering and Its Applications)
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