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Study of proton resonances in ^(18)Ne via resonant elastic scattering of ^(17)F+p and its astrophysical implication

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Science china(physics,Mechanics & Astronomy) 2011年第S1期54卷 32-36页

作者： HE JianJun1, HU Jun1,2. XU ShiWei1, CHEN ZhiQiang1, ZHANG XueYing1, WANG JianSong1, YU XiangQing1, ZHANG LiYong1,2. LI Long1,2. YANG YanYun1,2. MA Peng1,2. ZHANG XueHeng1, HU ZhengGuo1, GUO ZhongYan1, XU Xing1,2. YUAN XiaoHua1, LU Wan1,2. YU YuHong1, ZANG YongDong1,2. TANG ShuWen1,2. YE RuiPing1,2. CHEN JinDa1,2. JIN ShiLun1,2. DU ChengMing1,2. WANG ShiTao1,2. MA JunBing1,2. LIU LongXiang1,2. BAI Zhen1,2. LEI XiangGuo1, SUN ZhiYu1, ZHANG YuHu1, ZHOU XiaoHong1, XU HuShan1, SU Jun3, LI ErTao3, WANG HongWei4, TIAN WenDong4 & LI XiangQing5 1 institute of Modern physics (IMP), Chinese Academy of Sciences, Lanzhou 730000,{2. 2.Graduate University of Chinese Academy of Sciences, beijing 100049,{2. 3 china institute of atomic energy (CIAE), beijing 1024.3,{2. 4 Shanghai institute of Applied physics (SINAP), Chinese Academy of Sciences, Shanghai 2.1800,{2. 5 School of physics and State Key Laboratory of {12. physics and Technology, Peking University, beijing 100871,{2. 1. institute of Modern physics (IMP) Chinese Academy of Sciences Lanzhou 730000 China2. Graduate University of Chinese Academy of Sciences Beijing 100049 China3. China Institute of Atomic Energy (CIAE) Beijing 102413 China4. Shanghai Institute of Applied Physics (SINAP) Chinese Academy of Sciences Shanghai 201800 China5. School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University Beijing 100871 China

The proton resonant properties in 18Ne, which determine the reaction rate of the key stellar 14O(α,p)17F reaction, have been studied by using a technique of proton resonant elastic scattering of 17F+p. A 4.2. MeV/nucleon 17F radioactive ion (RI) beam was produced via a projectile-fragmentation reaction, and separated by a Radioactive Ion Beam Line in Lanzhou (RIBLL). By bombarding a thick (CH2.n target, the energy spectra of the recoiled protons were measured by two ΔE-E silicon telescopes at the center-of-mass scattering angles of θc.m.≈175°±5°, θc.m.≈152.±8°, respectively. Several proton resonances in 18Ne were ob served clearly. A further R-matrix analysis of the experimental data is under way to determine the resonant parameters. The present work reports the preliminary results briefly.

关键词： resonant reaction reaction rate explosive burning accreting binary systems

Evaluation and Testing of Coupled Channel Optical Potentials and Its Parameters for n+2.8～2.2.u and 2.1,2.2.m

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中国核科技报告 1999年第S1期 34-41页

作者： Wang Shunuan (china institute of {2. energy, beijing 102.513)

Several sets of coupled channel optical potentials and its parameters for n+2.8～2.2.u and2.1,2.2.m below 2. MeV are analyzed and evaluated by direct and compound inelastic scattering cross sections and angular distributions carried out by coupled channel optical model and semi-classical statistical model calculations. The potentials and its parameters recommended to be used in CENDL-3 calculations are presented and discussed.

关键词： ENDF Pu and Evaluation and Testing of Coupled Channel Optical Potentials and Its Parameters for n

Stationary Classical Chaos of Trapped Two-Component Bose-Einstein Condensates in 1-D Optical Lattice Potentials

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Communications in Theoretical physics 2007年第7期48卷 125-131页

作者： FANG Jian-Shu LIU Wing-Ki ZHU Shan-Hua1 institute of physics,Hunan University of Technology,Zhuzhou 412.08,{2.2.department of physics,Hunan Normal University,Changsha 410081,{2.3 department of physics,University of Waterloo,Waterloo,Ontario,Canada N2. 3G1 institute of physics Hunan University of Technology Zhuzhou 412008 China

We study the nonlinear dynamics of two-component Bose-Einstein condensates in one-dimensional pe-riodic optical lattice *** stationary state perturbation solutions of the coupled two-component nonlinearSchr?dinger/Gross-Pitaevskii equations are constructed by using the direct perturbation *** analysisrevels that the perturbation solution is the chaotic one,which indicates the existence of chaos and chaotic region inparameter *** corresponding numerical calculation results agree well with the analytical *** applying thechaotic perturbation solution,we demonstrate the atomic spatial population and the energy distribution of the systemare chaotic generally.

关键词： stationary state classical chaos two-component Bose-Einstein condensates optical lattice potential

A BRIEF DESCRIPTION OF THE SECOND VERSION OF CHINESE EVALUATED nuclear DATA LIBRARY CENDL—2

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中国核科技报告 1991年第S2期 7-9页

作者： Chinese nuclear Data Center ( china institute of atomic energy )

The Chinese nuclear Data Center and nuclear Data Committee of{2.started evaluation and compilation work for CENDL-2.at the beginning *** main purpose for making CENDL-2.is to develop and improve theCENDL-1,such as to extend the incident neutron energy to thermal energy re-gion,supplement the data type of evaluations,improve and update the earlierevaluations,and add some newly evaluations to the ***-2.wasfinally completed in July 1991,it contains data for main engineering,construc-tion and fuel materials in nuclear reactors,radiation shielding materials and soon.

关键词： data ENDF A BRIEF DESCRIPTION OF THE SECOND VERSION OF CHINESE EVALUATED nuclear DATA LIBRARY CENDL

Simulation of Isotopic Angular Effects under Ion Bombardment of a^(92.Mo-^(100)Mo Target

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Journal of Materials Science & Technology 1997年第1期13卷 65-68页

作者： Liping ZHENG (Shanghai institute of nuclear Research, Chinese Academy of Sciences, Shanghai 2.1800,{2.)Risheng LI and Shuyou LI(Lab. of atomic Imaging of Solids, institute of Metal Research, Chinese Academy of Sciences,Shenyang 110015,{2.) Shanghai institute of nuclear Research Chinese Academy of Sciences Shanghai 201800 China Lab. of atomic Imaging of Solids Institute of Metal Research Chinese Academy of Sciences Shenyang 110015 China

Under 5 keV Ar ion bombardment of a 92.o-100Mo target, we have investigated isotopic angular effects by means of the static and the dynamic Monte Carlo programs. Our calculated results are in quantitative agreement with the measured and other calculated results. The conclusion consistences among theories. simulations and measurements are also discussed.

关键词： Mo Target Simulation of Isotopic Angular Effects under Ion Bombardment of a Target

Electronic structure and magnetism of R（Fe,Si）12.（R=Y,Nd）

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Science china(physics,Mechanics & Astronomy) 2006年第2期Mechanics & Astronomy) .卷 195-202页

作者： SUN Guang’ai1, CHEN Bo1, DU Honglin2. FAN Zhijian1, GAO Tao3 & QI Xinhua31. institute of nuclear {2. and Chemistry, china Academy of Engineering {2., Mianyang 62.900, china 2. department of {2., Peking university, beijing 100871, china 3. institute of atomic and Molecular {2., Sichuan University, Chengdu 610065, china

The newly developed full-potential linearized augmented plane wave (LAPW) and local orbitals (lo) based on standard APW methods are briefly introduced, and the structure and magnetic properties of R(Fe, Si)12.compounds (R = Y, Nd) are calculated using the method. The distribution of Si at different sites is analyzed based on total energy of one crystal unit with structure having been optimized. The characters of magnetic mo-ments, total density of states (TDOS) and partial density of states (PDOS) for different crystal sites Si occupies are obtained and analyzed. The results show that the total mag-netic moments of RFe10Si2.(R = Y, Nd) are larger than those of RFe10M2.(M = Ti, V, Cr, Mn, Mo and W) and the hybridization mechanism is seen as follows. Si(8j) reduce the mag-netic moments of Fe at three sites, however, Si(8f) mainly reduce the magnetic moments of Fe(8i) and Fe(8j) atoms. The Curie temperature is markedly enhanced by the introduc-tion of Si atoms according to spin fluctuation of DOS at Fermi level.

关键词： (L)APW+lo method R(Fe Si)12.R = Y Nd) magnetic moment Density of state.

A Fast Algorithm for Phase Grating Preparation by Real Space Method

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Journal of Materials Science & Technology 2001年第2期17卷 240-242页

作者： Qiuxiang LIU and Yuanming WANG Laboratory of atomic Imaging of Solids, institute of Metal Research, Chinese Academy of Sciences, Shengyang 110015,{2. Qibin YANG and Xiaohong YAN institute of Modern physics, Xiangtan University, Xiangtan 411105,{2. Chinese Acad Sci Inst Met Res Atom Imaging Solids Lab Shenyang 110015 Peoples R China Xiangtan Univ Inst Modern Phys Xiangtan 411105 Peoples R China

Making use of this expression to calculate the phase grating in high resolution image simulation can greatly reduce the calculating time. In this paper, the derivation of the expression is introduced, and then the computer routine is explained in details. Finally the potential projection map of Mg44Rh7 along [001] direction is shown as an illustration. All operations are carried out in real space, so we call the calculation method as the real space method.

关键词： A Fast Algorithm for Phase Grating Preparation by Real Space Method

Radiation Effect of Neutrons in a Reactor on Polyurethane

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Journal of Wuhan University of Technology(Materials Science) 2010年第6期25卷 966-968页

作者：黄玮 institute of nuclear {2. and Chemistry China Academy of Engineering Physics

The radiation effect of neutrons in a reactor on polyurethane was *** gases produced by irradiated samples were analyzed by gas chromatography,and the dynamic mechanical and compression properties of the samples were also *** positron annihilation lifetime of irradiated samples was measured at room temperature in *** experimental results indicate that gas chromatography is a powerful tool to quantitatively analyze the gas products from neutron-irradiated polyurethane and characterizes the chemical changes in the *** the changes in microstructure determined from the PAL correlate well with the measurements of the mechanical properties by dynamic mechanical analysis（DMA）.

关键词： neutrons in a reactor polyurethane radiation effect

Nonlinear feedback synchronization of hyperchaos in higher dimensional systems

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nuclear Science and Techniques 1997年第4期 1-7页

作者： Fang Jin Qing ( china institute of atomic energy, beijing 1024.3) Ali M K ( {2. of physics, The University of Lethbridge,Lethbridge, Alberta T1K 3M4, Canada)

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关键词： Hyperchaos Synchronization Nonlinear feedback functions Ten dimension.