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Journal of materials Science & technology 2022年第16期111卷 17-27页

作者： Guojing Wang Zhiwei Tang Jing Wang Shasha Lv Yunjie Xiang Feng Li Chong liu School of Physical Science and technology Lanzhou UniversityLanzhou 730000China Department of Electronic materials Science and Engineering School of Materials Science and EngineeringSouth China University of TechnologyGuangzhou 510640China key laboratory of beam technology and material modification Ministry of EducationCollege of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China School of materials and Energy Southwest UniversityChongqing 404100China

In this work,a Bi_(2)O_(2.33)–CdS direct Z-scheme heterojunction was fabricated based on energy band *** Bi_(2)O_(2.33)core nanoflakes were first synthesized by electrodeposition which was followed by an annealing process to fabricate this *** the Cd S shell was deposited on Bi_(2)O_(2.33)nanoflakes utilizing the solution method,during which a suitable concentration of Cd Clsolution was used for forming a homogeneous and continuous integrated CdS shell.A space charge region and an internal electric field from CdS(+)to Bi_(2)O_(2.33)(-),which drove a direct Z-scheme charge transfer process,were formed at the *** Bi_(2)O_(2.33)–CdS exhibited excellent photocatalytic performance for CO_(2)reduction mainly attributed to the satisfactory photoinduced charge separation and transport efficiency in the direct Z-scheme *** photocatalytic CO_(2)reduction ability of Bi_(2)O_(2.33)–CdS was significantly enhanced compared with single Bi_(2)O_(2.33)or Cd S,with a CO_(2)yield rate of ca.2.9μmol/(cm^(2)h)under a 300 W Xe *** reduction of CO_(2)to CO_(2)demonstrated 94.0%selectivity.

关键词： Photocatalysis Cds Nanocomposite Vacancies Direct z-scheme heterojunction

Determination of the number ofψ(3686)events taken at BESⅢ

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Chinese Physics C 2024年第9期48卷 8-20页

作者： M.Ablikim M.N.Achasov P.Adlarson O.Afedulidis X.C.Ai R.Aliberti A.Amoroso Q.An Y.Bai O.Bakina I.Balossino Y.Ban H.-R.bao V.Batozskaya K.Begzsuren N.Berger M.Berlowski M.Bertani D.Bettoni F.Bianchi E.Bianco A.Bortone I.Boyko R.A.Briere A.Brueggemann H.Cai X.Cai A.Calcaterra G.F.Cao N.Cao S.A.Cetin J.F.Chang G.R.Che G.Chelkov C.Chen C.H.Chen Chao Chen G.Chen H.S.Chen H.Y.Chen M.L.Chen S.J.Chen S.L.Chen S.M.Chen T.Chen X.R.Chen X.T.Chen Y.B.Chen Y.Q.Chen Z.J.Chen Z.Y.Chen S.K.Choi G.Cibinetto F.Cossio J.J.Cui H.L.Dai J.P.Dai A.Dbeyssi R.E.de Boer D.Dedovich C.Q.Deng Z.Y.Deng A.Denig I.Denysenko M.Destefanis F.De Mori B.Ding X.X.Ding Y.Ding Y.Ding J.Dong L.Y.Dong M.Y.Dong X.Dong M.C.Du S.X.Du Y.Y.Duan Z.H.Duan P.Egorov Y.H.Fan J.Fang J.Fang S.S.Fang W.X.Fang Y.Fang Y.Q.Fang R.Farinelli L.Fava F.Feldbauer G.Felici C.Q.Feng J.H.Feng Y.T.Feng M.Fritsch C.D.Fu J.L.Fu Y.W.Fu H.Gao X.B.Gao Y.N.Gao Yang Gao S.Garbolino I.Garzia L.Ge P.T.Ge Z.W.Ge C.Geng E.M.Gersabeck A.Gilman K.Goetzen L.Gong W.X.Gong W.Gradl S.Gramigna M.Greco M.H.Gu Y.T.Gu C.Y.Guan Z.L.Guan A.Q.Guo L.B.Guo M.J.Guo R.P.Guo Y.P.Guo A.Guskov J.Gutierrez K.L.Han T.T.Han F.Hanisch X.Q.Hao F.A.Harris K.K.He K.L.He F.H.Heinsius C.H.Heinz Y.K.Heng C.Herold T.Holtmann P.C.Hong G.Y.Hou X.T.Hou Y.R.Hou Z.L.Hou B.Y.Hu H.M.Hu J.F.Hu S.L.Hu T.Hu Y.Hu G.S.Huang K.X.Huang L.Q.Huang X.T.Huang Y.P.Huang T.Hussain F.Hölzken N.Hüsken N.in der Wiesche J.Jackson S.Janchiv J.H.Jeong Q.Ji Q.P.Ji W.Ji X.B.Ji X.L.Ji Y.Y.Ji X.Q.Jia Z.K.Jia D.Jiang H.B.Jiang P.C.Jiang S.S.Jiang T.J.Jiang X.S.Jiang Y.Jiang J.B.Jiao J.K.Jiao Z.Jiao S.Jin Y.Jin M.Q.Jing X.M.Jing T.Johansson S.Kabana N.Kalantar-Nayestanaki X.L.Kang X.S.Kang M.Kavatsyuk B.C.Ke V.Khachatryan A.Khoukaz R.Kiuchi O.B.Kolcu B.Kopf M.Kuessner X.Kui N.Kumar A.Kupsc W.Kühn J.J.Lane P.Larin L.Lavezzi T.T.Lei Z.H.Lei M.Lellmann T.Lenz C.Li C.Li C.H.Li Cheng Li D.M.Li F.Li G.Li H.B.Li H.J.Li H.N.Li Hui Li J.R.Li J.S.Li Ke Li L.J.Li L.K.Li Lei Li M.H.Li P.R.Li Q.M.Li Q.X.Li R.Li S.X.Li T.Li W.D.Li W.G.Li X.Li X.H.Li X.L.Li X.Z.Li Xi Institute of High Energy Physics Beijing 100049China Beihang university Beijing 100191China Bochum Ruhr-university D-44780BochumGermany Budker Institute of Nuclear Physics SB RAS(BINP) Novosibirsk 630090Russia Carnegie Mellon university PittsburghPennsylvania 15213USA Central china normal university Wuhan 430079China Central South university Changsha 410083China china Center of Advanced Science and technology Beijing 100190China china university of Geosciences Wuhan 430074China Chung-Ang university Seoul06974Republic of Korea COMSATS university Islamabad Lahore CampusDefence RoadOff Raiwind Road54000LahorePakistan Fudan university Shanghai 200433China GSI Helmholtzcentre for Heavy Ion Research GmbH D-64291DarmstadtGermany Guangxi normal university Guilin 541004China Guangxi university Nanning 530004China Hangzhou normal university Hangzhou 310036China Hebei university Baoding 071002China Helmholtz Institute Mainz Staudinger Weg 18D-55099MainzGermany Henan normal university Xinxiang 453007China Henan university Kaifeng 475004China Henan university of Science and technology Luoyang 471003China Henan university of technology Zhengzhou 450001China Huangshan College Huangshan 245000China Hunan normal university Changsha 410081China Hunan university Changsha 410082China Indian Institute of technology Madras Chennai 600036India Indiana university BloomingtonIndiana 47405USA INFN Laboratori Nazionali di Frascati (A)INFN Laboratori Nazionali di FrascatiI-00044FrascatiItaly(B)INFN Sezione di PerugiaI-06100PerugiaItaly(C)University of PerugiaI-06100PerugiaItaly INFN Sezione di Ferrara (A)INFN Sezione di FerraraI-44122FerraraItaly(B)University of FerraraI-44122FerraraItaly Inner Mongolia university Hohhot 010021China Institute of Modern Physics Lanzhou 730000China Institute of Physics and technology Peace Avenue 54BUlaanbaatar 13330Mongolia Instituto de Alta Investigación Universidad de TarapacáCasilla 7DArica 1000000Chile Jilin university Changchun 130012China Joha

The number ofψ(3686)events collected by the BESⅢdetector during the 2021 run period is determined to be(2259.3±11.1)×10~6 by counting inclusiveψ(3686)hadronic *** uncertainty is systematic and the statistical uncertainty is ***,the numbers ofψ(3686)events collected during the 2009 and 2.1.run periods are updated to be(107.7±0.6)×10~6 and(345.4±2.6)×10~6,*** numbers are consistent with the previous measurements within one standard *** total number ofψ(3686)events in the three data samples is(2.1..4±14.3)×10~6.

关键词： ψ(3686) inclusive process Hadronic events BESⅢdetector

The Role of Neck Evolution in the Synthesis of Superheavy Element 112

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Chinese Physics Letters 2013年第8期30卷 42-45页

作者： ZHU Min FU Jun-Li QU Zhen liu Zu-Hua WANG Wen-Zhong School of Science Minzu University of ChinaBeijing 100081 key laboratory of beam technology and material modification of ministry of education Beijing Normal UniversityBeijing 100875 china Institute of Atomic Energy Beijing 102413

The coupled and uncoupled Langevin equations in two-dimensional collective space are used to study the neck dynamics of the mass asymmetric system ^(48)Ca+^(238)U at the above barrier *** results show that the coupling between the neck and radial degrees of freedom delays the transition from dinucleus to mononucleus,and correspondingly increases the lifetime of the dinucleus *** lifetime of the dinucleus for the asymmetric system^(48)Ca+^(238)U is about 11.6 and 13.0×10^(-22) s,obtained with uncoupled and coupled Langevin *** calculate the evaporation residue(ER)cross sections for the 3n and 4n evaporation channels in the ^(48)Ca+^(238)U reaction leading to the formation of ^(283)112 and ^(282.1.2 isotopes in three different approaches,i.e.,coupled,uncoupled and frozen approximation,and compare them with the experimental *** is found that the results of the uncoupled and frozen approximation are in close similarity,while the coupling between the radial and neck degrees of freedom reduces the ER cross section by about 30%,compared with the case of frozen approximation.

关键词： lifetime Langevin radial

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成像板发光原理及其特性

物理学报 2023年第16期72卷 173-180页

作者：王浩然田宝贤薄楠刘伏龙贺创业贾少青郭冰王乃彦北京师范大学核科学与技术学院北京100875 北京师范大学射线束技术教育部重点实验室北京100875 中国原子能科学研究院北京102413 原子高科股份有限公司北京102413

由于成像板(imaging plate,IP)对电磁辐射场不敏感,因而作为探测介质被广泛应用于激光驱动的辐射粒子诊断设备中,在使用前需要对其特性和物理机制进行研究.利用^(90)Sr/^(90)Y电子源测量BAS-SR和BAS-TR两种IP板的时间衰减曲线,同时对长... 详细信息

由于成像板(imaging plate,IP)对电磁辐射场不敏感,因而作为探测介质被广泛应用于激光驱动的辐射粒子诊断设备中,在使用前需要对其特性和物理机制进行研究.利用^(90)Sr/^(90)Y电子源测量BAS-SR和BAS-TR两种IP板的时间衰减曲线,同时对长时间辐照的衰减曲线进行修正;刻度了BAS-SR和BAS-TR两种IP板对^(90)Sr/^(90)Y电子源的绝对灵敏度,其分别为(0.033±0.002)PSL/e和(0.0180±0.0038)PSL/e(photostimulated light,PSL),与国际上大部分电子绝对刻度的结果基本相符,IP板对辐射粒子的绝对刻度依赖于IP板的类型、扫描设备和实验环境.此外对BAS-SR和BAS-TR两种IP板辐照后进行多次连续扫描,研究了信号强度变化趋势的规律.建立了用于描述辐射粒子在IP板荧光层中沉积能量、存储信息和信息读取微观物理过程的光激励发光模型,结合光激励发光模型建立的数学模型有效地阐释了IP板探测辐射粒子物理机制与其表现的特性之间的关系.这些研究可以为后续开展IP板应用于激光等离子体诊断实验提供一定的数据基础.

关键词：成像板特性研究光激励发光

Sound absorption of several various nickel foam multilayer structures at aural frequencies sensitive for human ears

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Transactions of Nonferrous Metals Society of china 2018年第7期28卷 1334-1341页

作者： Pei-sheng liu Xin-bang XU Wei CHENG Jing-he CHEN key laboratory of beam technology of ministry of education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China

Using the three-dimensional reticular nickel foam as experimental material, the sound absorption performance was investigated for several various multilayer structures in the frequency range of 2000-4000 Hz, which is aurally sensitive for human ears. The results showed that the 7.5 mm-thick foam sample, which was formed by piling of 5-layer foam plate（thickness： 1.5 mm; porosity： 96%; average pore-diameter： 0.65 mm） could exhibit an excellent sound absorption effect at 4000 Hz, with the absorption coefficient about 0.8. Constituting alternate air gap with the total thickness of about 18.5 mm can greatly improve the absorption performance at relatively low frequencies of 2000-3150 Hz, with the absorption coefficient up to about 0.5 or more. In addition, the research showed that alternate piling up the perforated plate inside the foam plates can also achieve a quite good effect of sound absorption at relatively low frequencies.

关键词： reticular nickel foam composite structure of sound absorption aurally sensitive frequency sound absorption

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多孔金属材料失效模式的数理分析

中国有色金属学报 2021年第2期31卷 384-400页

作者：刘培生周茂奇北京师范大学核科学与技术学院射线束技术教育部重点实验室北京100875

三维网状多孔金属材料已广泛应用于工程领域,本文借助于数理分析,综合介绍了此类材料在常见载荷形式作用下的失效模式,并对相关环节展开探讨。全面分析了该材料在单向压缩、双向压缩和三向压缩等压缩载荷形式下的失效行为,重点讨论了多... 详细信息

三维网状多孔金属材料已广泛应用于工程领域,本文借助于数理分析,综合介绍了此类材料在常见载荷形式作用下的失效模式,并对相关环节展开探讨。全面分析了该材料在单向压缩、双向压缩和三向压缩等压缩载荷形式下的失效行为,重点讨论了多孔产品在不同压缩载荷形式下的孔棱拉断和剪切断裂破坏模式,以及在三向压缩载荷形式下可能出现的孔棱屈曲失效模式。结果表明:此类材料承受压缩、弯曲、扭转、剪切等载荷时在多数场合将表现出孔棱拉断的破坏模式,但也存在孔棱趋于剪切断裂这一破坏模式的情况。

关键词：多孔材料泡沫金属常见载荷失效模式

Measurements of the ^(107)Ag neutron capture cross sections with pulse height weighting technique at the CSNS Back-n facility

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Chinese Physics B 2022年第3期31卷 109-116页

作者： Xin-Xiang Li Long-Xiang liu Wei Jiang Jie Ren Hong-Wei Wang Gong-Tao Fan Jian-Jun He Xi-Guang Cao Long-Long Song Yue Zhang Xin-Rong Hu Zi-Rui Hao Pan Kuang Bing Jiang Xiao-He Wang Ji-Feng Hu Jin-Cheng Wang De-Xin Wang Su-Yalatu Zhang Ying-Du liu Xu Ma Chun-Wang Ma Yu-Ting Wang Zhen-Dong An Jun Su Li-Yong Zhang Yu-Xuan Yang Wen-Bo liu Wan-Qing Su Sheng Jin Kai-Jie Chen Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China university of Chinese Academy of Sciences Beiing 100049China Shanghai Advanced Research Institute Chinese Academy of SciencesShanghai 201210China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China china Spallation Neutron Source Dongguan 523803China china Institute of Atomic Energy Beijing 102413China key laboratory of beam technology and material modification of ministry of education College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China beijing Radiation Center Bejing 100875China College of Mathematics and Physics Inner Mongolia Minzu UniversityTongliao 0280000 China Xiangtan university Xiangtan 411105China Henan normal university Xinxiang 453007China Sun Yat-sen university Zhuhai 510275China ShanghaiTech university Shanghai 200120China

Silver indium cadmium(Ag–In–Cd) control rod is widely used in pressurized water reactor nuclear power plants,and it is continuously consumed in a high neutron flux environment. The mass ratio of ^(107)Ag in the Ag–In–Cd control rod is 41.44%. To accurately calculate the consumption value of the control rod, a reliable neutron reaction cross section of the ^(107)Ag is required. Meanwhile,^(107)Ag is also an important weak r nucleus. Thus, the cross sections for neutron induced interactions with ^(107)Ag are very important both in nuclear energy and nuclear astrophysics. The(n, γ) cross section of ^(107)Ag has been measured in the energy range of 1–60 eV using a back streaming white neutron beam line at china spallation neutron source. The resonance parameters are extracted by an R-matrix code. All the cross section of ^(107)Ag and resonance parameters are given in this paper as datasets. The datasets are openly available at http://***/10.11922/sciencedb.j00113.00010.

关键词： neutron capture cross section pulse height weighting technique(PHWT) ^(107)Ag(n γ)^(108)Ag the china spallation neutron source(CSNS)Back-n facility

Micro-X-Ray Diffractometer Focused by Polycapillary Optics and Its Applications for materials

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Micro-X-Ray Diffractometer Focused by Polycapillary Optics a...

第三届材料科学应用与能源材料国际研讨会

作者： Qili Jiang Qilin Shuai Jun liu Lin Cheng key laboratory of beam technology of ministry of education College of Nuclear Science and Technology Beijing Normal University beijing Radiation Centre

The analysis of small samples and micro areas of large samples are significant in material, environment and geology fields. This work reports the study of a micro-X-ray diffractometer developed by our laboratory and its applications for not only micro-X-ray diffraction（μ-XRD） analysis but also micro energy dispersive X-ray fluorescence（μ-EDXRF） analysis. The accomplishment of the two analysis methods in one instrument makes it possible to characterize micro materials in situ by a very efficient way. In order to demonstrate the feasibility of this diffractometer, the samples difficult to be measured by the conventional diffractometer were studied. Firstly, a cooper wire with a diameter of 140 μm was analysed as a micro sample. Then two different points of a TiN film were analysed to discuss their phase transitions in micro areas. Moreover, the phase distribution of a two-dimensional area on an iPhone mainboard was scanned. The phase mapping was acquired by data processing. These researches highlight the abilities of this diffractometer in the applications on micro material characterizations. As a result, this diffractometer can adapt to the analyses of elemental composition, mineralogical composition and their distributions in the micro materials. It can also provide useful reference information for the micro phase transitions. Therefore, it can be concluded that this micro-X-ray diffractometer has potential prospect in the micro material analysis and any other related fields.

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多孔材料性能模型研究1:数理关系

材料工程 2019年第6期47卷 42-62页

作者：刘培生崔光程伟北京师范大学核科学与技术学院射线束技术教育部重点实验室

三维网状多孔材料是一类优秀的工程材料,其用途覆盖能源、生物、航空航天、环境保护、交通运输等诸多领域。本文作者根据三维网状多孔材料的结构特征,提出了综合简化的八面体结构模型,并在此基础上获得了该材料的系列性能关系。本文综... 详细信息

三维网状多孔材料是一类优秀的工程材料,其用途覆盖能源、生物、航空航天、环境保护、交通运输等诸多领域。本文作者根据三维网状多孔材料的结构特征,提出了综合简化的八面体结构模型,并在此基础上获得了该材料的系列性能关系。本文综合介绍了该模型及此类材料的基本物理、力学性能数理关系,从单向拉伸到多向拉压,以及传导性能和比表面积等。对该简化结构模型的根源、特点等进行了比较全面的描述,同时与同类模型进行了对比分析,并对不同性能模型及其性能关系进行了逐一诠释,其中代表性的问题有多孔体承载时涉及的孔棱细梁假设、孔棱弯曲、承载单元约束力,以及拉压性能关系中涉及的修正系数、塑性指数取值等。经实验验证该模型具有良好的实用性。

关键词：多孔材料性能模型数理关系

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多孔材料性能模型研究2:实验验证

材料工程 2019年第7期47卷 35-49页

作者：刘培生夏凤金程伟北京师范大学核科学与技术学院射线束技术教育部重点实验室

在三维网状多孔材料"八面体结构模型"及其系列基本物理、力学性能相关数理模型和表征方式基础上,本文对传导和拉伸等若干性能指标的数理关系验证进行了综述。重点讨论了数理关系的实践性、修正系数的合理性、对计算结果的影响、对应致... 详细信息

在三维网状多孔材料"八面体结构模型"及其系列基本物理、力学性能相关数理模型和表征方式基础上,本文对传导和拉伸等若干性能指标的数理关系验证进行了综述。重点讨论了数理关系的实践性、修正系数的合理性、对计算结果的影响、对应致密体的许用应力取值和塑性指数取值等问题。按照这种数理关系,通过多孔产品孔率等基本参量即可计算其电阻率等性能指标,实验结果证明了其可行性。本方法可以优越于有限元等复杂计算。

关键词：多孔材料性能模型实验验证