JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
·
2021
·Vol. 327
·期 3
·1159-1166
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IF 1.371
Li Lingshuang,Luo Fen,Chen Zhi,Shu Xiaoyan,Tang Hexi,Chen Shunzhang,Wang Lan,Xie Yi,Lu Xirui
Abstract This work investigated the irradiation behavior of gray desert soil holding simulated An 4+ waste under an irradiation of 1.5 MeV Xe 20+ to fluences from 1 × 10 12 to 1 × 10 15 ions cm − 2 . The results indicated that the structure has no obvious change due to irradiation fluences and waste load. The normalized leaching rate of Ce after 28 days of the MCC-1 test is in the order of 1 × 10 − 5 g cm − 2 d − 1 before and after irradiation. This work identifies gray desert soil, which has good radiation resistance, as a potential matrix for solidification tetravalent actinides. Graphic abstract
研究领域:
环境科学
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放射性废物管理
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产品关联
DOI
高影响因子
RADIATION PHYSICS AND CHEMISTRY
·
2019
·
IF 1.984
Wei Qi,Mengjie Li,Long Zhao
Recently, controlled synthesis of nanoparticles through the use of microemulsions combined with electron-beam or γ irradiation has garnered interest. However, there are rare research about the effect of these radiations on the interfacial properties and phase behavior of microemulsions. Therefore, in this work, we prepared ionic liquid-based microemulsions (IL-C n -Ms) combining 3-methylimidazolium hexafluorophosphate having different alkyl chain lengths, TX-100, and deionized water and then irradiated them with a high-energy electron beam . The effects of radiation and alkyl chain length on microemulsion microregions, droplet size, surface tension, and solubilization were investigated in detail. Radiation had a negligible effect on the interfacial properties and phase behavior of the IL-C n -Ms. Interestingly, the droplet size of IL-C n -Ms increased with the alkyl chain length of the ionic liquid due to the IL interactions at the IL-C n -Ms interface. Our work provides a preliminary database and presents new opportunities for the combination of ionic liquid-based microemulsions and radiation technology.
研究领域:
化学
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材料科学
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辐射技术
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Jiankai Hu,Daili Feng,Wenjun Li,Jianyin Miao,Yanhui Feng
The integration of phase change material (PCM) into aircraft thermal protection system (TPS) can dissipate aerodynamic heat by utilizing its sensible and latent heat, but there is a problem of leakage. Porous SiC ceramics with high-temperature resistance and low thermal conductivity are utilized to encapsulate high latent heat PCM, solving leakage issues and mitigating the high-temperature aerodynamic heating environment experienced by aircraft. In this study, low thermal conductivity porous SiC ceramics were prepared, where the addition of SiO 2 in the skeleton led to a 36% reduction in thermal conductivity, while the mechanical properties were improved by 129%. After loading the PCM, the thermal conductivity of the composite was only 0.402 W/(m·K), while the latent heat reached up to 231.07 J/g. Aircraft is subjected to space particles when serving in the space environment, therefore the effects of 60 Co γ-ray irradiation on composite PCMs were investigated. The results showed that irradiation induced a small number of point defects in the skeletons, which caused phase changing polyethylene glycol (PEG) molecular chain breakage and the production of new compounds, thereby inducing a decrease in the latent heat of the PEG composites, whereas there was no significant effect on the phase changing mannitol (Man) composites. This study may provide guidance for the application of composite PCMs in TPS.
研究领域:
航空航天材料
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热防护系统
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材料科学
✓ 已验证
产品关联
DOI
高影响因子
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS
·
2014
·
IF 1.186
M.M. Mikhailov,Chundong Li,V.V. Neshchimenko
Diffuse reflection spectra and absorption spectra of titanium dioxide (anatase) micro- and nanopowders induced by exposure to 100 keV protons and electrons were analyzed at wavelengths between 250 and 2500 nm. It is established that the radiation stability of the nanopowders is higher than the micropowders in the absorption region λ > 500 nm for proton and electron exposure. This effect is caused by the high concentration of radiation defects in micropowders, which is associated with defects of interstitial titanium ions ( Ti i , Ti i ), titanium vacancies ( V Ti ⁗ , V Ti ‴ ) and oxygen vacancies V O X .
研究领域:
材料科学
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物理学
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产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 47
·18025-18032
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IF 8.067
Shu-Yan Wang,Xiao-Juan Zhen,Zhan-Zu Feng,Ming-Jun Xiao,Shi-Ji Li,Wen Shang,Yi-Fan Huang,Qiang Wang,Hao-Li Zhang
Space exploration urgently demands novel irradiation-tolerant materials to build the arsenal for outer space use, among which nonlinear optical materials and devices are ever-increasing attractive. Tin sulfide (SnS), a novel two dimensional (2D) BP-analog with enhanced stability under ambient conditions, has exhibited excellent optoelectronic properties on the ground, but its potential as a candidate for space optics remains to be explored. Herein, the spatial adaptability of SnS was evaluated in the simulated space radiation environment. When exposed to 60Co γ-rays at a dose equal to over 45 year accumulation in a typical earth orbit, SnS still maintained its strong third-order nonlinear saturable absorption ranging from visible to near-infrared spectra. Ultrafast spectroscopy is used to study the radiation effects and relevant damage mechanisms that are difficult to be revealed via conventional techniques. This work not only sheds light on the irradiation-induced ionization damage and defects in SnS from the unique perspective of ultrafast excited state dynamics but also provides general guidance for rational design and screening space radiation-tolerant nonlinear optical materials.
研究领域:
材料科学
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光学
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空间科学
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DOI
高影响因子
IEEE TRANSACTIONS ON PLASMA SCIENCE
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2021
·Vol. 49
·期 12
·3764-3769
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IF 1.222
Jie-Qing Fan,Yao Li,Fang Zhang,Jian-Hong Hao,Zhi-Wei Dong,Qiang Zhao
To study the electromagnetic radiation effect of a thermal control layer (TCL) on the surface of general spacecraft in a space environment, a model of thermal control material irradiated with microwaves was established, a particle-in-cell (PIC)-Monte Carlo collisions (MCC) simulation was used, and the processes of field emission, multipacting, outgassing, and impact ionization on the surface of thermal control materials were simulated. By comparing the primary electrons, secondary electrons, and impact ionization electrons produced under different field intensities and frequencies of electromagnetic waves, different compositions of outgassing, and different thermal control materials, the influencing factors and critical thresholds of avalanche ionization were obtained. The simulation results show that whether avalanche ionization occurs in outgassing on the surface of the TCL is affected by the electromagnetic wave amplitude, electromagnetic wave frequency, outgassing composition, and the material of the TCL. This provides a theoretical reference for the safe operation of spacecraft.
研究领域:
空间环境工程
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材料科学
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电磁学
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等离子体物理
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2019
·Vol. 136
·期 20
·47505
·
IF 2.188
Yu-Peng Chen,Abdul Qadeer Dayo,Hui-Yan Zhang,An-ran Wang,Jun Wang,Wen-bin Liu,Yan Yang,Qi-Rui Qin,Yu-Gang Yang
The cardanol-based phthalonitrile (PN) monomer was successfully produced via the nucleophilic substitution reaction of cardanol with 4-nitrophthalonitrile in potassium carbonate media. The conventional methods were employed to predict the chemical structure. The influence of long alkyl chains of cardanol was observed on the thermomechanical properties, recorded values were much below than the poly(Baph) standards. However, the thermal stabilities were recorded in good agreement to PN resin values. Furthermore, the 100 kGy dose of Co 60 irradiation does not show any remarkable changes in the studied properties. The copolymers from P-a benzoxazine and cardanol-based PN (CPN) on the different wt % blending were prepared. The curing behavior and mechanism of the monomer blends were analyzed. The curing of CPN was improved in the presence of active hydrogen produced from the P-a polymerization. The T g and thermal properties of the copolymer were much better than the neat poly(P-a). © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47505.
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2021
·Vol. 32
·期 7
·2108857
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IF 18.808
Dou Zhao,Pingkun Cai,Wei Cheng,Wenbao Jia,Binbin Zhang,Menghua Zhu,Linyue Liu,Xiaoping Ouyang,Paul Sellin,Wanqi Jie,Yadong Xu
Fast neutron detection is significant for neutron imaging and flux monitoring but cannot be directly achieved by inorganic semiconductors. The traditional detection is mainly mediated by an organic scintillator and a coupled photodetector, resulting in signal losses. Here, a direct detection method for fast neutrons is demonstrated based on organic semiconducting single crystals (OSSCs) detectors. Methyl 4-hydroxybenzoate (4MHB, C 6 H 5 O-COOCH 3 ) and 4-hydroxycyanobenzene (4HCB, C 6 H 5 O-CN). The organic semiconductor acts as a fast neutron sensitive material due to its high hydrogen density, simultaneously as a semiconductor that generates the electric signal. The detectors based on 4MHB crystals can quantitatively measure the dose and energy of the fast neutron flux with a response time of 0.5 µs and detection efficiency of 78.5% cm −3 . Effects of functional groups on fast neutron detection performances are also investigated as a guideline to synthesis new molecules for this purpose. Furthermore, neutron radiation effects on these detectors are investigated. Hydrogen-related point defects are generated by fast neutrons, but device performances remain robust after irradiation of 10 13 n cm −2 fast neutrons. This study demonstrates that OSSCs show great potential as direct fast neutron detectors and particularly have highly-localized and tissue-equivalent properties that benefit neutron imaging and cancer therapy applications.
研究领域:
物理学
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材料科学
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医学应用
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DOI
高影响因子
Optical Materials Express
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2024
·Vol. 14
·期 6
·1531-1546
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IF 2.8
Zhenghao Li,Zhenghao Li,Xin Li,Yan Sun,Yan Sun,Chongyun Shao,Wei Chen,Wei Chen,Xin Wang,Chunlei Yu,Lili Hu,Malgorzata Guzik,Georges Boulon
To develop Dy doped silica glass with a higher irradiation resistance, which can be adapted to high power violet or blue LD pumped yellow laser fibers, the designed Dy-Al-Ce codoped silica glasses, 0.05Dy2O3-1.5Al2O3-xCe2O3-(98.45-x)SiO2 (x = 0, 0.05, 0.1, 0.25, 0.5), were prepared by the sol-gel method. Their excitation spectra, emission spectra and emission decay curves associated with the yellow emission from 4F9/2 to 6H13/2 of Dy were determined before and after the X-ray irradiation of 1000 Gy. The relation between these spectra and Ce-codoping concentrations is discussed, including the sensitization from Ce to Dy, the reverse energy transfer from Dy to Ce, and especially the X-ray-induced photodarkening, which is detrimental to the 576 nm yellow emission of Dy. The centers that cause the photodarkening are analyzed by electron paramagnetic resonance and radiation induced absorption spectra. It is found that Ce can effectively suppress the Al-oxygen hole center induced by the X-ray across the entire concentration range of Ce-codoping, but a new photodarkening center is generated at higher concentrations of Ce-codoping. Finally, the optimized Ce-codoping concentration of ∼0.1 mol% is used to achieve a promising yellow laser glass of Dy-Al-Ce codoped silica with enhanced irradiation resistance, resulting in its X-ray-induced photodarkening that is only 6% - 14% of that in the Ce-undoped.
研究领域:
光学材料
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激光物理
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辐射效应
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产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
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2025
·
IF 7.4
Jiale Mao,Chenyang Li,Likang Zhou,Min Li,Jing Li,Shuang Wang,Yu Chen,Zicai Shen
Shape memory polymers (SMPs) for space deployable structures, as a new type of smart material, whose adaptivity to space environments plays a crucial role in ensuring the long-term stable operation of next-generation spacecraft. This study systematically investigates the real-time photoconductive response and cumulative damage effects of SMPs with varying crosslinking network architectures under X-ray irradiation. By tailoring the curing agent functionality and mass ratios, a series of SMPs are synthesized and evaluated through shape memory behavior, thermodynamic and dielectric properties, and conductivity characteristics with and without X-ray irradiation. The research emphasizes the effects of X-ray irradiation on their dielectric properties, not only examining damage effects but also closely monitoring the real-time evolution of charge transport properties during irradiation, with the influence of temperature on these properties simultaneously considered. The results demonstrate that X-ray exposure induces a sharp increase in conductivity, with an effect significantly greater than that of temperature, accompanied by a phenomenon resembling current saturation. And at high doses accumulation, leads to partial chain scission and the formation of new functional groups, indicating a simultaneous process of degradation and re-crosslinking. This work provides a foundational understanding of radiation effects on epoxy SMPs and practical guidance for their use in high-radiation environments.
研究领域:
材料科学
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聚合物物理
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辐射效应
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智能材料
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航天工程
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Yuan Liu,Junxia Wang,Jin Wang,Die Liu,Kunqi Liu,Long Kang,Tongmin Zhang
Composite ceramics, which integrate the advantages of multiple crystal structures, are considered promising candidates for nuclear waste forms capable of simultaneously immobilizing various radionuclides. In this study, a series of 0.4Sr 0.5 Zr 2 (PO 4 ) 3 –0.6Ce 1- x Nd x PO 4 composite ceramics were designed to co-immobilize the simulated fission product Sr and actinide surrogates Ce and Nd. These composite ceramics exhibited homogeneous phase distribution and high densification. Among them, the irradiation-induced damage in the representative sample, 0.4Sr 0.5 Zr 2 (PO 4 ) 3 –0.6Ce 0.6 Nd 0.4 PO 4 composite ceramic, was systematically evaluated under both He 2+ and Xe 20+ irradiation. After He 2+ irradiation, the crystallinity of the irradiated layer was retained despite the disruption of Raman-active bonding groups by point defects. Notably, the Ce 0.6 Nd 0.4 PO 4 phase exhibited significantly higher resistance to He 2+ irradiation than the Sr 0.5 Zr 2 (PO 4 ) 3 phase, as confirmed by GIXRD patterns and geometric phase analysis (GPA). Furthermore, fragmentation of Ce 0.6 Nd 0.4 PO 4 grains was observed, which was attributed to defect accumulation, the thermal spike effect, and the thermal expansion mismatch. Following Xe 20+ irradiation, the irradiated layer of the composite ceramic exhibited reduced crystallinity without complete amorphization, while the Raman-active bonding groups remained largely intact. Additionally, pore formation at grain boundaries was likely caused by the segregation and accumulation of irradiation-induced defects.
研究领域:
核材料
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陶瓷学
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辐射效应
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固态物理
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材料科学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·Vol. 50
·期 12
·21859-21868
·
IF 5.1
Haiyan Guo,Kuibao Zhang,Yuxiang Li
In this work, the irradiation response of A 2 Ti 2 O 7 (A represents rare earth elements of Gd, Dy, Ho, Er, Yb and Nd) series ceramics were systematically studied under 3 MeV Au 2+ ions. The structural changes pre- and post-irradiation were characterized using X-ray diffraction (XRD), grazing incidence X-ray diffraction (GIXRD) and Raman spectroscopy . After heavy ion irradiation , all the samples undergo structural transformations from ordered pyrochlore to disordered fluorite and then to amorphous phase. The sample surface became fully amorphous when exposed to the maximum irradiation dose. The 5RETO high-entropy pyrochlore exhibits the lowest rate of amorphization during the process of structural transformation. The cation radius ratio and mixed entropy are the primary factors influencing amorphization rate. The cation radius ratio shows a strong positive correlation with the amorphization rate, while the mixed entropy demonstrates a weak negative correlation with the amorphization rate. The cation radius ratio can thus serve as a reliable indicator for predicting the radiation resistance of high-entropy pyrochlore ceramics.
研究领域:
材料科学
·
核材料
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固态化学
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辐射效应
·
无机非金属材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）