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Refraction of light in media

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Science china(Physics,Mechanics & Astronomy) 2007年第5期50卷 591-600页

作者： ZHANG Tao Key Laboratory of Beam Technology and Material Modification of Ministry of Education, institute of Low energy Nuclear Physics, beijing Normal University, beijing 100875, {4. beijing Radiation Center, beijing 100875, {4. Key Laboratory of Beam Technology Material Modification of Ministry of Education Institute of Low Energy Nuclear Physics Beijing Normal University Beijing 100875 China beijing Radiation Center Beijing 100875 China

The roles of the magnetic field and electric field of the light are investigated when the light is refracted in the medium. The model of the electron cloud conductor is presented. Electron cloud in a molecule is treated as a conductor and the Faraday’s Law is applied to this conductor that is in the alternating magnetic field of the light. dBM/dt of the light gives rise to an alternating induced current on the electron cloud conductor, and the light exchanges energy, i.e. the refractive energy, with the elec- tron cloud conductor. Formulas of refractive index, which is the ratio of light speed in vacuum to that in the medium, are derived with this model. These formulas are tested with several mediums and Langevin’s diamagnetic susceptibility of helium gas, and the results are in good agreement with the measured data. The anisotropy and the nonlinearity of the refractive index are explained with the theory described in this work.

关键词： refractive index, light, speed, medium, propagation

ICRPANDCHINESERADIATIONPROTECTIONCOMMUNITY

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辐射防护 1998年第Z1期18卷 75-80页

作者： Pan Ziqiang(Science and Technology Commission, china atomic energy Authority, beijing) 核工业总公司安防环境保护卫生局北京

１ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｔｅｒｎａｔｉｏｎａｌＣｏｍｍｉｓｉｏｎｏｎＲａｄｉａｔｉｏｎＰｒｏｔｅｃｔｉｏｎ（ＩＣＲＰ）ｗａｓｅｓｔａｂｌｉｓｈｅｄｉｎ１９２８ａｓｔｈｅＩｎｔｅｒｎａｔｉｏｎａｌＸｒａｙａｎｄ... 详细信息

１ＩｎｔｒｏｄｕｃｔｉｏｎＩｎｔｅｒｎａｔｉｏｎａｌＣｏｍｍｉｓｉｏｎｏｎＲａｄｉａｔｉｏｎＰｒｏｔｅｃｔｉｏｎ（ＩＣＲＰ）ｗａｓｅｓｔａｂｌｉｓｈｅｄｉｎ１９２８ａｓｔｈｅＩｎｔｅｒｎａｔｉｏｎａｌＸｒａｙａｎｄＲａｄｉｕｍＰｒｏｔｅｃｔｉｏｎＣ...

关键词： ICRP Radiation Protection Regulations Radiation Protection Optimization

Tungsten-182 Mssbauer experiments at liquid nitrogen temperature

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Chinese Science Bulletin 2001年第9期46卷 732-734页

作者： HUANG Runsheng, LIU Bing, ZHANG Jinrong, LIU Cong & GAO Xuekui1. Physics Department of Nanjing University, Nanjing 210093, china 2. china institute of atomic {4., beijing 102.13. china Physics Department of Nanjing University Nanjing China china institute of atomic energy Beijing China

A good 182Ta Mossbauer source and an apparatus designed specially were made. 182W transmission Mossbauer experiments were successfully carried out, both of the source and absorber at liquid nitrogen temperature. It wa... 详细信息

关键词： Mossbauer effect 182W Mossbauer effect.

Catalytic protection of stannous ion by ascorbic acid in diphosphonic acids solutions

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Nuclear Science and Techniques 1998年第2期9卷 121-123页

作者： Liu Guo-Zheng Liu Fei Miao Zeng-Xing Wang Yi-Shan and Fang Ji-Dong (Isotope Department, china institute of atomic energy, {4. 102.13. Isotope Department China Institute of Atomic Energy Beijing 102413 China

The protective ability of ascorbic acid(Vc) on stannous ion and the influence of light irradiation on the stability of stannous ion in diphosphonate medium at pH=5 have been examined in order to attain minimal loss of stannous ion during the production of lyophilized radiopharmaceutical *** sum of stanous ion and Vc was determined with iodometric *** was shown that the protective ability of Vc was still strong at Vc concentration much lower than that of stannous ion and the illumination by fluorescent lamp was unfavorable to the stability of stannous *** change of pH in the range 3-9 did not affect the action of Vc significantly.

关键词：锡离子稳定性骨造影工具

A SIMPLE WAY CONSTRUCTING SYMPLECTICRUNGE-KUTTA METHODS

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Journal of Computational Mathematics 2000年第1期18卷 61-68页

作者： Geng Sun(institute of Mathematics, Academia Sinica, beijing 100080, china) 中科院数学所北京 100080

Presents a study which derived a way of constructing symplectic methods with the help of symplecticity conditions of partitioned Runge-Kutta methods. Classes of symplectic Runge-Kutta methods; Relationship between Run... 详细信息

关键词： symplecticity condition partitioned Runge-Kutta method

Kinetics study on the dissolution of UO_2 particles by microwave and conventional heating in 4.mol/L nitric acid

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Science china Chemistry 2008年第7期51卷 700-704页

作者： ZHAO YunFeng & CHEN Jing institute of Nuclear and New energy Technology, Tsinghua University, beijing 102201, china institute of Nuclear and New energy Technology Tsinghua UniversityBeijing 102201China

The dissolution of UO2 particles in 4.mol·L-1 nitric acid medium at temperatures of 90-110℃ by mi- crowave heating and conventional heating has been investigated, respectively. It is found that the dissolution ratios of UO2 particles by microwave heating were 10%-4.% higher than that by conven- tional heating. Kinetics research shows that the dissolution of UO2 particles in 4.mol·L-1 nitric acid is controlled by the diffusion control model for microwave heating and by the surface reaction control model for conventional heating. The diffusion control model for the dissolution of UO2 particles by mi- crowave heating could be explained by the diffuseness on the surface of UO2 particles.

关键词： uranium dioxide nitric acid dissolution microwave heating

A possible proton pygmy resonance in ^(17)Ne

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Science china(Physics,Mechanics & Astronomy) 2011年第S1期54卷 49-52页

作者： MA ZhongYu1,2 & TIAN Yuan1 1 china institute of atomic energy,{4. 2 Center of Theoretical Nuclear Physics, National Laboratory of Heavy Collision, Lanzhou 730000, china 1. china institute of atomic energy Beijing 102413 China2. Center of Theoretical Nuclear Physics National Laboratory of Heavy Collision Lanzhou 730000 China

The low-lying electric dipole strengths in proton-rich nuclei 17F and 17Ne, which can be produced at HIRFL-CSR in Lanzhou, are investigated. In the framework of the covariant density functional theory the self-consistent relativistic Hartree Bogoliubov model and the relativistic quasiparticle random phase approximation with the NL3 parameter set and Gogny pairing interaction are adopted in the calculations. A pronounced dipole peak appears below 10 MeV in17Ne, but does not occur in 17F. The prop erties of this low-lying E1 excitation in 17Ne are studied, which may correspond to a proton pygmy resonance with different characteristics from those of giant dipole resonance.

关键词： proton pygmy resonance relativistic Hartree-Bogoliubov model relativistic quasiparticle random phase approximation

Further research on high-spin structure in ^(161)Lu

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Science china(Physics,Mechanics & Astronomy) 2008年第3期51卷 315-320页

作者： LI YanXia1,2,YU ShaoYing1,2,4.SHEN CaiWan1,5,LI XiaoWei6 & CHEN YongShou3,4.1 School of Science,Huzhou Teachers College,Huzhou 313000,china 2 College of Mathematics,Physics and Information Engineering,Zhejiang Normal University,Jinhua 321000,china 3 china institute of {4. energy,beijing 102.13.china 4.institute of Theoretical Physics,Chinese Academy of Sciences,beijing 100080,china 5 Center of Theoretical Nuclear Physics,National Laboratory of Heavy Ion Accelerator of Lanzhou,Lanzhou 730000,china 6 Department of Physics,Chifeng University,Chifeng 024.01,china School of Science Huzhou Teachers College Huzhou 313000 China College of Mathematics Physics Information Engineering Zhejiang Normal University Jinhua 321000 China china institute of atomic energy Beijing 102413 China institute of Theoretical Physics Chinese Academy of Sciences Beijing 100080 China Center of Theoretical Nuclear Physics National Laboratory of Heavy Ion Accelerator of Lanzhou Lanzhou 730000 China Department of Physics Chifeng University Chifeng 024001 China

The two-dimensional total routhian surface (TRS) calculations were performed to probe into the triaxial superdeformed characteristics of a strongly populated band X2 in 161Lu. This band was identified as a triaxial superdeformed band by using our TRS method. We also got its formation mechanics,i.e. the neutron-shell correction energy plays a crucial role,while the rotating energy and the deformation-driving effect of high j intruder orbit i13/2 also play an additional role.

关键词： TRS method triaxial superdeformation formation mechanism

The principle of relativity, kinematics and algebraic relations

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Science china(Physics,Mechanics & Astronomy) 2010年第4期53卷 591-597页

作者： GUO HanYing1, HUANG ChaoGuang2,3, WU HongTu4.& ZHOU Bin5 1institute of Theoretical Physics, Chinese Academy of Sciences, beijing 100190, china 2institute of High {4. Physics, Chinese Academy of Sciences, beijing 10004., china 3Theoretical Physics Center for Science Facilities, Chinese Academy of Sciences, beijing 10004., china 4.epartment of Mathematics, Capital Normal University, beijing 10004., china 5Department of Physics, beijing Normal University, beijing 100875, china 1. institute of Theoretical Physics Chinese Academy of Sciences Beijing 100190 China2. Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 China3. Theoretical Physics Center for Science Facilities Chinese Academy of Sciences Beijing 100049 China4. Department of Mathematics Capital Normal University Beijing 100048 China5. Department of Physics Beijing Normal University Beijing 100875 China

Based on the relativistic principle and the postulate of universal invariant constants (c, l), all kinematic symmetries can be set up as the subsets of the Umov-Weyl-Fock-Hua transformations for the inertial motions. ... 详细信息

关键词： principle of relativity with (c l) Umov-Weyl-Fock-Hua transformations kinematics special relativity triple