The lifetime distribution of finite fission chain group around the prompt criticality
December 2023
In order to describe the behavior of finite fission chains in a fission system initiated by a δ neutron source, we present the conception of the finite fission chains group (FFCG). The group is the...
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Computer simulation of tritium release behavior of Li4SiO4 ceramic breeder with an improved packed bed model
September 2023
In order to have a deep understanding of the tritium migration and release mechanisms in ceramic breeders, computer simulation of the tritium release behavior of Li4SiO4 ceramic breeder was performed...
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Thermodynamics of Thorium(IV) complexes with N-methylethylenediamine-N,Nʹ,Nʹ-triacetate in aqueous solutions: Potentiometry and microcalorimetry
September 2023
The thermodynamic parameters of the complexes of Th with N-methylethylenediamine-N,Nʹ,Nʹ-triacetic acid (MEDTA; denoted as H3L with three dissociable protons) were studied. Potentiometry and microcalorimetry...
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A systematic study on complementary metal-oxide semiconductor technology (CMOS) and Internet of Things (IOT) for radioactive leakage detection in nuclear plant
September 2023
Although nuclear power plants produce about 20% of India's power, the risk posed by radioactive leakage is considerable. Radiation leakage detection devices must be installed in all nuclear power plants...
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A comparative study of adsorption properties of zirconium (IV) phosphonates for removal of 90Sr
June 2023
With as goal of improving on traditional α-ZrP, four zirconium phosphonate materials were prepared as potential adsorbents for the removal of 90Sr from nuclear wastewater. A typical sol–gel method was...
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XPS determination of the uranium valences in U3O8
June 2023
Uranium oxides are tightly related to the whole nuclear fuel cycle in the nuclear industry. However, the understanding of the chemical states in mixed valence uranium oxides remains scattered and deserves...
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Progress in measurements of fission cross sections and total cross sections at CSNS Back-n white neutron source
June 2023
The neutron-induced cross sections are of great significance for the design of nuclear devices and advanced reactors for the nuclear energy production. At CSNS Back-n white neutron source, new measurements...
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Quantitative estimation of tritium amount in surface layer and bulk of tungsten sample using BIXS
March 2023
Estimation of both the surface tritium and tritium in bulk in key materials of fusion reactors is of great importance for tritium safety and the management of tritium-contaminated material. For the...
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Temperature dependence of hydrogen isotope effect in LaNi5-H(D) system
March 2023
To study inverse effect of hydrogen isotopes in LaNi5 for hydrogen isotope separation at ambient temperature, temperature dependence of hydrogen isotope effect in LaNi5－H(D) system was investigated...
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Calibration of a PIXE system at Peking University
March 2023
A method combining particle-induced X-ray emission spectrometry (PIXE) and elastic backscattering spectrometry (EBS) was used to calibrate the PIXE system at Peking University. The selected thin standard...
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Mechanism study of bubble dynamics under the buoyancy effects
March 2023
The motion of a single bubble in a 2-D vertical channel filled with stagnant or moving fluid is simulated for various sets of conditions using the computational fluid dynamics(CFD) method. The volume...
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Mechanical properties and magnetic and electronic properties tuned via strain in two-dimensional non-van der Waals hematene
March 2023
Two-dimensional (2D) non-van der Waals hematene has increasingly attracted attention in the applications of photocatalysis, spintronic devices, and magnetic storage media. Mechanical properties as well...
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Sol-gel fabrication of porous ceria microspheres for thermochemical carbon dioxide (CO2) splitting
March 2023
Porous CeO2 has been of great interest recently, due to its great catalytic efficiency in splitting CO2 into CO and O2. Porous CeO2 microspheres are the key to scaling up such reactions in the fluidized-bed...
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Interaction between Gaomiaozi bentonite colloid and uranium
December 2022
In a deep geological repository system, the presence of clay colloids in the geological disposal medium is considered to be a potential factor promoting nuclide migration. In this study, Gaomiaozi bentonite...
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Thermodynamics on the complexation of uranium (VI) with N-methylethylenediamine-N,N′,N'-triacetic acid in aqueous Solution: Potentiometry and microcalorimetry
December 2022
Stability constants and enthalpies of N-methylethylenediamine-N,N′,N'-triacetic acid (MEDTA, denoted as H3L) complexes with uranyl were measured using potentiometry and microcalorimetry, I = 1.0 mol L−1...
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Study on the application of scintillation screen of Gd2O2S:Tb, F / gel glass in the X-ray imaging
December 2022
The transparency of scintillator screen has always been an important factor restricting the imaging performance. Here we present an innovative strategy, by combining the gel glass with GOS:Tb, F, we...
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Complexes of bipyridinecarboxylate and phenanthrolinecarboxylate with trivalent actinides and lanthanides: Binding strength and structure
December 2022
The binding strengths of ligand 2,2ʹ-bipyridine-6-carboxylate (BiPCA) and 1,10-phenanthroline-2-carboxylate (PhenCA) with trivalent actinides (An) like Am(III) and Cm(III), and lanthanides (Ln) like...
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Review: Research progress on nanosecond laser irradiation damage of optical films
December 2022
Nanosecond laser irradiation damage of optical films is one of the main factors to limit the output power when the high power solid laser system is used to drive inertial confinement nuclear fusion....
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Effects of Helium on the creep resistance of Er2O3 films
December 2022
The nanostructured Er2O3 thin films implanted by Helium (He) were prepared by magnetron sputtering under different He partial pressure. The creep properties of the Er2O3 films under different temperatures...
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Review: Pair distribution functions from neutron total scattering for the study of local structure in disordered materials
December 2022
With the development of pulsed spallation sources of neutrons in recent years has come the possibility to generate intense beams of higher energy than possible at reactor sources. This has enabled neutron...
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Effects of reflected neutrons on the reactivity measurement of metal Assemblies
September 2022
The kinetic equation including the reflected neutron effect is established based on the time-dependent two-region kinetic model. Different reactivity measurement methods are simulated by using the equation....
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Development and performance of a secondary electron detector based on a MCP
September 2022
Secondary electron detector (SED) is a key component used in the fission product yield experiment to mark the start time of fission events. The signal to noise ratio and timing characteristics has an...
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Double heterojunction CQDs/CeO2/BaFe12O19 magnetic separation photocatalysts: Construction, structural characterization, dye and POPs removal, and the interrelationships between magnetism and photocatalysis
September 2022
This novel double heterojunction carbon quantum dots (CQDs)/CeO2/BaFe12O19 magnetic separation photocatalysts (CCBFOMSPs) were successfully prepared via a polyacrylamide gel method and low temperature...
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The neutron diffraction experiments under high pressure and high temperature on FENGHUANG diffractometer at CMRR
September 2022
FENGHUANG diffractometer at CMRR, a high-intensity multi-section neutron powder diffractometer, has been constructed to in situ studies of materials under high pressure high temperature conditions....
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Study on structure evolution of CoCrFeNi high entropy alloy in containerless processing using neutron diffraction
September 2022
Containerless processing is able to access the deeply supercooled regime due to the absence of heterogeneous nucleation sites, for example, container walls. Therefore, it allows us to explore a possible...
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