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A new Method to Correct 238U Fission Rate Measured Using Uranium Foils

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中国核科技报告 1997年第S3期 94-98页

作者： Zhong Wenfa (institute of nuclear energy technology, tsinghua university, beijing, 100084)

A new method to correct measured data from highly depleted uranium foils is presented in this paper. It is used for correctingU fission rate distribution measured with uranium foils. The correctedU fission rate data compare with the measured data (only fission rate ofU) using miniature fission chambers with Cdcovered. The results of correctedU fission rates are satisfied.

关键词： rate U Fission Rate Measured Using Uranium Foils A new Method to Correct

Thermal-hydraulic stability of a natural circulation system with nuclear feedback

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nuclear Science and Techniques 1997年第4期 16-21页

作者： Xu Zhan Jie, Chen Li Qiang,Ma Chang Wen and Wu Shao Rong ( institute of nuclear energy technology, tsinghua university, beijing 100084)

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ＴｈｅｒｍａｌｈｙｄｒａｕｌｉｃｓｔａｂｉｌｉｔｙｏｆａｎａｔｕｒａｌｃｉｒｃｕｌａｔｉｏｎｓｙｓｔｅｍｗｉｔｈｎｕｃｌｅａｒｆｅｅｄｂａｃｋＸｕＺｈａｎＪｉｅ，ＣｈｅｎＬｉＱｉａｎｇ，ＭａＣｈａｎｇＷｅｎａｎｄＷｕＳｈａｏＲｏｎｇ（Ｉｎ...

关键词： Stability nuclear feedback Density wave oscillation Natural circulation

The Study of Dynamics of Molecular Highly Excited Vibrational States with Dynamical Potential Approaches

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The Study of Dynamics of Molecular Highly Excited Vibrationa...

A 12-bit multichannel ADC for pixel detectors in particle physics and nuclear imaging

第十六届全国原子与分子物理学术会议

作者： Fang Chao institute of nuclear and new energy technology,tsinghua university.beijing.china,100084

The highly excited vibrational state is hard to study by the quantum mechanical calculation because of its nonlinear *** constructed the algebraic Hamiltonian,dynamical potential and action integral for its *** comprehensive research,we elucidated some essential dynamical characteristics of the highly excited vibrational states of four integrable systems(HCP, DCP,HOCl and HOBr),including their *** important result is the classification of energy levels under the concept of polyad *** these,we also discovered that by the dynamical symmetry we could transfer our conclusions to the other systems yet to be studied. Furthermore,we studied the HCO *** the Lyapunov exponent,we discovered that the vibrational states of HCO with chaotic motion would be more stable,and more intramolecular vibrational relaxation will be involved,*** conclusions are helpful for us to understand the molecular highly excited vibrational dynamics

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Science china(Technological Sciences) 2010年第5期53卷 1208-1214页

作者： WEI Wei1,2,3,WANG Zheng1,3 & ZHAO JingWei1,3 1 institute of High energy Physics,Chinese Academy of Sciences,beijing 100049,china 2 Graduate university of Chinese Academy of Sciences,beijing 100049,china 3 Key Lab of nuclear Detection technology and nuclear Electronics of Chinese Academy of Sciences,beijing 100049,china 1. institute of High energy Physics Chinese Academy of Sciences Beijing 100049 China2. Graduate University of Chinese Academy of Sciences Beijing 100049 China3. Key Lab of Nuclear Detection Technology and Nuclear Electronics of Chinese Academy of Sciences Beijing 100049 China

Modern pixel detectors in nuclear and particle physics experiments and also in nuclear imaging,starve for highly integrated application specified integrated circuit(ASIC),whereas in china the study of ASIC still stays far away from practical *** lack of ASIC strictly limits the research and development of domestic high energy physics field.A 12-bit multichannel ADC designed for high density readout is introduced as a major candidate for solution.A precise model is discussed and the simulation fully agrees with the model,which indicates a key principle of *** is performed according to the given rule,and novel layout techniques are carried *** results in all aspects are also obtained,showing an excellent real performance,which satisfies the practical requirement.

关键词： application specified integrated circuit high density readout Wilkinson ADC multi-channel ADC

Preparation of Anode Material for Lithium Ion Battery by Chemical Oxidation

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Chinese Chemical Letters 1999年第4期10卷 339-340页

作者： Yu Ping WU Chun Rong WAN Chang Yin JIANG Jian Jun LI Yang Xing LI(institute of nuclear energy technology. tsinghua university, beijing 102201) tsinghua Univ Inst Nucl Energy Technol Beijing 102201 Peoples R China

Anode material for lithium ion battery is prepared by chemical oxidation of natural graphite. After oxidation, the properties of natural graphite are modified, such as surface structure, the content of graphite phases, the number of micropores and its stability. thus the modified natural graphite can be used as anode material for commercial lithium ion battery. The reversible capacity is increased from 100 mAh/g to above 300 mAh/g, and its cycling properly is also satisfactory.

关键词： anode material preparation chemical oxidation lithium ion battery

Role of Demonstration of the Sino-Dutch Cooperation Project—A Perspective from Rural energy Development in china

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Role of Demonstration of the Sino-Dutch Cooperation Project...

Magnetic moments of ^(33)Mg in the time-odd relativistic mean field approach

作者： Gu Shuhua institute of nuclear and new energy technology,tsinghua university,beijing 100084

The paper analyzes the experiences that led to the success of the Sino-Dutch Cooperation Project,including technology selection,fund use,project objective setting, organization and management and dissemination *** exp... 详细信息

关键词： rural renewable energy project objective significance of demonstration

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Science china(Physics,Mechanics & Astronomy) 2009年第10期52卷 1586-1592页

作者： LI Jian1,ZHANG Ying1,YAO JiangMing1 & MENG Jie1,2 1 School of Physics,State Key Laboratory of nuclear Physics and technology,Peking university,beijing 100871,china 2 School of Physics and nuclear energy Engineering,Beihang university,beijing 100191,china School of Physics State Key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 China School of Physics and nuclear energy Engineering Beihang University Beijing 100191 China

The configuration-fixed deformation constrained relativistic mean field approach with time-odd component has been applied to investigate the ground state properties of 33Mg with effective interaction *** ground state of 33Mg has been found to be prolate deformed,β2=0.23,with the odd neutron in 1/2[330] orbital and the energy -251.85 MeV which is close to the data -252.06 *** magnetic moment -0.9134 μN is obtained with the effective electromagnetic current which well reproduces the data -0.7456 μN self-consistently without introducing any *** energy splittings of time reversal conjugate states,the neutron current,the energy contribution from the nuclear magnetic potential,and the effect of core polarization are discussed in detail.

关键词： magnetic moment binding energy time-odd component configuration-fixed deformation constrained calculation relativistic mean field theory

Optimal reactions for the synthesis of superheavy nucleus ^(270)Hs

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Science china(Physics,Mechanics & Astronomy) 2006年第6期49卷 641-648页

作者： LIU Zuhua1,3 & BAO Jingdong1,2 1. Key Laboratory of Beam technology and Material Modification of Ministry of Education, beijing Normal university, beijing 100875, china 2. Physics Department, beijing Normal university, beijing 100875, china 3. china institute of Atomic energy, beijing 102413, china Key Laboratory of Beam technology Material Modification of Ministry of Education Beijing Normal University Beijing 100875 China Physics Department Beijing Normal University Beijing 100875 China china institute of Atomic energy Beijing 102413 China

The superheavy nucleus 270Hs is expected to be a “double-magic” deformed nucleus. We have calculated its cross sections of evaporation residue for the reactions 248Cm(26Mg,4n)270Hs, 244Pu(30Si,4n)270Hs, 238U(36S,4n)270Hs and 226Ra(48Ca,4n)270Hs using a two-parameter Smoluchowski equation. It is found from our results that 226Ra(48Ca,4n)270Hs and 238U(36S,4n)270Hs are two optimal reactions for the synthesis of the superheavy nucleus 270Hs due to their large negative Q-values.

关键词： diffused fusion barrier,Smoluchowski equation,superheavy nuclei.

Measurement Methodology for Monitoring Fouling Resistance in Condenser of Chiller

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湖南大学学报（自然科学版） 2009年第S1期36卷 119-122页

作者： YU Dan1,3,GAN Li-si1,CAO Yong2(1.beijing university of technology,beijing 100022,china 2.Build Environment and energy Efficiency,china Academy of Building Research,beijing 100013,china 3.beijing institute of Civil Engineering and Architecture,beijing 100044,china) beijing university of technology Beijing 100022 China beijing institute of Civil Engineering and Architecture Beijing 100044 China Build Environment and energy Efficiency China Academy of Building Research Beijing 100013 China

This paper established an on-line monitoring model for fouling resistance of cooling water based on heat transfer theory,which was mainly applied to the fouling resistance test for condenser of chiller in operation,and the test requirements were *** proves that the load ratio of chiller has big influence on the test result,and the best load ratio for test is the range of 80%～100%.A case has been executed to validate the model's feasibility.

关键词： fouling resistance monitoring condenser cooling water