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Chinese Science Bulletin 1997年第10期42卷 807-809页

作者： YANG Baolian, LI Liyun and YE ChaohuiLaboratory of Magnetic Resonance and atomic and Molecular physics, Wuhan {2. of physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, china Laboratory of Magnetic Resonance and atomic and Molecular physics Wuhan Institute of Physics and Mathematics Chinese Academy of Sciences Wuhan China

HIGH-RESOLUTION solid state 13C NMR spectroscopy has been a useful tool for the study of *** the use of cross polarization（CP）,magic angle spinning（MAS）and protonhigh-power decoupling（HPD）techniques,high-resolution solid state 13C NMR spectra ofcoals can be obtained and the coal aromaticity（fa）can be measured *** aromaticityis defined as the ratio of aromatic carbon atoms to the total carbon atoms in *** pa-

关键词： 13C NMR coal structure quantitative amendment.

Processing technique of target capsule's micro inflation hole with a scanning probe

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Science china(Technological Sciences) 2004年第1期47卷 77-84页

作者： SUN Tao, YAN Yongda, GAO Dangzhong, TANG Yongjian, FU Yibei & DONG ShenPrecision Engineering Research institute, Harbin institute of Technology, Harbin 150001,{2. Research Centre of Laser Fusion, Chinese Academy of Engineering Plysics, Mianyang 62.900,{2. institute of nuclear physics and Chemistry, Chinese Academy of Engineering physics, Mianyang 62.900,{2. 1. Precision Engineering Research institute Harbin Institute of Technology 150001 Harbin China 2. Research Centre of Laser Fusion Chinese Academy of Engineering Plysics 621900 Mianyang China 3. institute of nuclear {2. and Chemistry Chinese Academy of Engineering Physics 621900 Mianyang China

To resolve inflation of inertial confinement fusion (ICF) target and encapsulation of micro inflation hole with adhesive, a scanning probe microscope (SPM) diamond microprobe was used as the cutting tool with SPM in contact mode. Some parameters influencing the quality of micro inflation hole, such as the scanning direction of the diamond tip, the scanning rate and the contact force are discussed. Accurate taper hole was achieved whose climension and precision could meet the requirements of inflation and encapsulation technique of micro hole. The experimental results show that using SPM diamond microprobe as the cutting tool and with special processing technique, the precision machining of target capsule's taper inflation hole can be realized. A novel operative technology for filling high Z gas to target is provided.

关键词： target capsule, scanning probe microscope (SPM), diamond microprobe, processing technique, brittle material.

A first-principles investigation into the hydrogen bond interaction in β-HMX

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Science china(physics,Mechanics & Astronomy) 2010年第6期53卷 1080-1085页

作者： CHEN Fang 1 ,ZHANG Hong 1,2.ZHAO Feng 3 ,MENG ChuanMin 3 & CHENG XinLu 1 1 institute of atomic and Molecular {2.,Sichuan University,Chengdu 610065,china 2.School of Physical Science and Technology,Sichuan University,Chengdu 610065,china 3 Laboratory for Shock Wave and Detonation {2. Research,Southwest institute of Fluid {2.,china Academy of Engineering {2.,Mianyang 62.900,china 1. institute of atomic and Molecular {2. Sichuan University Chengdu 610065 China2. School of Physical Science and Technology Sichuan University Chengdu 610065 China3. Laboratory for Shock Wave and Detonation Physics Research Southwest Institute of Fluid Physics China Academy of Engineering Physics Mianyang 621900 China

A theoretical study of structural and electronic properties of β-HMX crystal is performed using density-functional theory(DFT). The total density of states(TDOS) is presented. The atomic orbit projected density of state(PDOS) from the p-type orbit of C,N,O and the s-type orbit of H is discussed. The study by analyzing the PDOS shows that the structure of β-HMX crystal possesses C-H···O intra- and inter-molecular hydrogen-bonding. There exists a hydrogen bonding between H5 -1s and O12.-2. orbits,between H19 -1s and O2. -2. orbits of intra molecules,and between H19 -1s and O2. -2. orbits of inter molecules. The Mulliken population analysis is also made.

关键词： structural property hydrogen bond β-HMX population analysis

Neutron Diffraction Studies of the Magnetic Structure of Ho_2.e_9Ga_(8～x)Alx

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Chinese journal of nuclear physics 1997年第1期19卷 44-47页

作者： Chen Dongfeng Gou Cheng Sun Kai china institute of atomic energy,P.O.Box 2.5-30,beijing {2.Yan Qiwei Zhang Panlin Shen Baogen Cheng Zhaohua State Key Laboratory of Magnetism,Intstitute of physics,the Chinese Academy of Sciences,P.O.Box 603,beijing 100080 中国原子能科学院北京中科院物理所磁学国家重点实验室北京

The crystallographic and magnetic structures of Ho2.e9Ga8～xAlx（x=2.4 and 6）arestudied by powder neutron diffraction at room *** atom fractional occupancies ofGa and AI and the atom magnetic moments of Ho and Fe are... 详细信息

The crystallographic and magnetic structures of Ho2./sub>Fe9Ga8～xAlx（x=2.4 and 6）arestudied by powder neutron diffraction at room *** atom fractional occupancies ofGa and AI and the atom magnetic moments of Ho and Fe are obtained by Rietveld *** magnetic structure of the phase with x=2.shows an easy-axis anisotropy and themagnetic moments of all atoms are parallel to c *** saturation magnetization and Curietemperatures of samples with x in the range 0～8 are investigated.

关键词： Neutron diffraction Magnetic structure

Analysis of heavy-ion-induced DNA strand breaks in plasmid pUC18

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Analysis of heavy-ion-induced DNA strand breaks in plasmid p...

Site selective excitation spectroscopy of CsCdBr3∶U3+

中国作物学会2.07年全国作物遗传育种学术研讨会

作者： GUO Hui-jun~1 LIU Lu-xiang~1 LI Jia-cai~2.ZHAO Kui~3 SUI Li~3 ZHAO Lin-shu~1 ZHAO Shi-rong~1 1.The National Key Facility for Crop Gene Resources and Genetic Improvement,institute of Crop Science,Chinese Academy of Agricultural Sciences,beijing 100081,{2. 2.institute of High energy physics,Chinese Academy of Sciences,beijing 100093,{2. 3.department of nuclear physics,{2. institute of atomic energy,beijing 102413,{2.

Plasmid DNA was irradiated or implanted by mixed particle field(CR)or lithium-ion-beam to detect strand *** primary results showed that mixed particle field could induce single and double strand breaks with positive linear-dose-effects;most of sequence changes induced by CR were point ***-ion-beam could induce strand breaks also,but it was only at dose of 2.Gy.

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原子与分子物理学报 2002年第3期19卷 370-372页

作者： YIN Min 1, KRUPA J C 2.1.Structure Research Laboratiory, University of Science and Technology of china, Hefei 2.002. 2. institute of {2. physics, 91406 Orsay Cedex, France) Structure Research Laboratiory University of Scienceand Technology of China Hefei 230026 institute of nuclear {2. 91406 Orsay Cedex 法国

The CsCdBr 3∶U 3+ crystal was grown by the Bridgman technique from the starting materials CsBr, CdBr 2. and UBr 4. X-ray check showed that the sample crystallized in the CsNiBr 3 structure. Under selective exc... 详细信息

关键词： Site selective photoluminescene spectra Lifetimes CsCdBr 3∶U 3+ crystal

Relativistic Description of Proton Scattering on ^(16)O,^(40)Ca and ^(2.8)Pb at 800 MeV

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Chinese journal of nuclear physics 1994年第4期 295-302页

作者： Chen Bao-qiu (china institute of {2. energy,P.O.Box 2.5(18),beijing 102413)

Relativistic microscopic optical potential of the nucleon-nucleus scattering isobtained from the relativistic Brueckner-Bethe-Goldstone（RBBG）*** com-plex effective mass of a nucleon in the medium is phenomenologically determined by afit to P-40Ca scattering data at Ep=2.0 *** behavior of the optical potential witha complex effective mass for P-40Ca scattering at Ep=2.0 MeV is compared with that ofa real effective *** relativistic microscopic optical potentials with both the com-plex and real effective masses,obtained from the RBBG equation,are used to studyp-16O,40Ca and 2.8Pb scattering problem at Ep=800 *** calculated results,suchas cross sections and spin observables,are theoretical prediction and are compared withexperimental data.

关键词： Relativistic microscopic optical potential Nucleon-nucleus scattering RBBG equation

Experimental and theoretical study of^(13)C shielding tensors in new-style molybdenum complex

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Science china Chemistry 2004年第3期47卷 214-221页

作者： HOU Guangjin1,2. WANG Liying2. LU Xiaoming3, ZHENG Anmin2. DENG Feng2.&YE Chaohui1,2.1. department of physics, Huazhong University of Science and Technology, Wuhan 430074,{2. 2. State Key Laboratory of Magnetic Resonance and atomic and Molecular physics, Wuhan institute of physics and Mathematics, Chi-nese Academy of Sciences, Wuhan 430071,{2. 3. department of Chemistry, Capital Normal University, beijing 100037,{2. 1. department of physics Huazhong University of Science and Technology 430074 Wuhan China 2. Chinese Academy of Sciences State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics 430071 Wuhan China 3. department of Chemistry Capital Normal University 100037 Beijing China

13C 2.-PASS spectra of two new cis-dioxo catecholatomolybdenum complexes (NH2.H2.H2.HCH2.2.H+)3[MovO 2.C6H4O2.2. and (NH2.H2.H2.H2.H2.2.H+)3[Mo(v)O2.(C2.2.2.2. have been obtained by solid-state nuclear magnetic resonance (NMR), in which the spinning sidebands were well-separated. The principal components of the 13C shielding tensors were extracted by theoretically fitting the intensities of 13C spinning sidebands. The effects of counter cations on 13C chemical shift isotropy and shielding tensor of cis-dioxo catecholatomolybdenum complex anion [Mo (v)O2.C6H4O2.2.3? were studied, comparing the 13C CSA of those carbon sites in complex anions with that of the counter cations. Based on the known structure of the molybdenum complex crystal, theoretical values of 13C shielding tensors were calculated by the ainitio GIAO method, in comparison with the experimental results.

关键词： NMR, magic angle spinning, chemical shift anisotropy, shielding tensor, cis-dioxo-monomolybdenum.

用原位x射线小角散射研究块体非晶合金Zr_(55)Cu_(30)Al_(10)Ni_5的结构弛豫

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物理学报 2003年第9期52卷 2219-2222页

作者：柳义柳林王俊赵辉荣利霞董宝中中国原子能科学研究院北京102413 华中科技大学材料学院武汉430074 中国科学院高能物理研究所同步辐射实验室北京100039

应用同步辐射x射线小角散射法在原位对块体非晶合金Zr55Cu30 Al1 0 Ni5在等温退火过程中的微结构变化进行研究 .实验表明 :在等温退火过程中电子密度涨落反映了晶化之前的结构弛豫过程 ;在一定的退火温度下、随退火时间的增加 ,拓扑短... 详细信息

应用同步辐射x射线小角散射法在原位对块体非晶合金Zr55Cu30 Al1 0 Ni5在等温退火过程中的微结构变化进行研究 .实验表明 :在等温退火过程中电子密度涨落反映了晶化之前的结构弛豫过程 ;在一定的退火温度下、随退火时间的增加 ,拓扑短程序弛豫与化学短程序弛豫之间存在一个电子密度均匀化的过程 ;导致这两种弛豫过程转变的退火时间与退火温度有关 ,温度越高。

关键词：原位x射线小角散射块体非晶合金等温退火结构弛豫 Zr55Cu30Al10Ni5合金电子密度涨落