最新刊期
      卷 0 ， 期 0 ， 2020
      • WANG Jiqing,GUO Panlin,LI Xiaolin,QIU Huiyuan,ZHU Jieqing
        Issue 12, (2000)
        摘要：A multi - station and multi - parameter data system for nuclear microprobe was discussed in detail. It is based on a SUN workstation and a VME bus. Its software for data acquisition and on - line analysis was also discussed. The individual aerosol particles taken from Shanghai were analyzed using the new data system.  
        关键词：Nuclear microprobe;SUN workstation;VME bus;Individual aerosol particles?   
        13
        |
        49
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7208097 false
        发布时间：2021-03-12
      • LI Aiguo,CAI Yingwen,CAO Jianqing,NI Xinbo,ZHANG Guilin
        Issue 12, (2000)
        摘要：Under different atmospheric environment composed of pure Ar and N2, a serial of FexN (1.6<x<2.2) samples were made by RF sputtering. Proton depth elastic scattering was adopted to measure Fe, N, O and C, XPS was used to detect the oxidation of iron. Mossbauer spectroscopy was used to analyze the samples as sputtered and annealed after 200℃, 250℃ and 300℃. Combined with X-ray diffraction, the results show that: when the ratio of Fe:N is close to 2, its phase structure will undergo a transition from orthogonal ζ -Fe2N and ε -Fe2N--Fe3N to hcp ε -Fe2N, while the first neighbor of Fe atom may be rich of or lack of N. When the nitrogen content is increased during sputtering, or the samples are annealed, Fe2N phase will transform into quasi-ZnS structure.  
        关键词：Iron nitride;Mossbauer effect;Proton depth elastic scatter?   
        22
        |
        107
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7202022 false
        发布时间：2021-03-12
      • CHEN Wenming,LI Xiqing,YAN Lifeng,YUAN Yang
        Issue 12, (2000)
        摘要：In this paper, through determining the yields of the photonuclear reaction 12C (r, n) 11 C at different heights of the " rabbit", the photon flux density of the bremsstrahlung converted from the 200MeV election beam at National Synchmtron Radiation Laboratory was studied. It was found that the half - width of angular distribution was 3°, larger than the result of Monte Carlo simulation calculation. The irradiation conditions for photon activation analysis of different elements and production of neutron - deficient nuclides were proposed.  
        关键词：200MeV electron beam;Bremsstrahlung;Photon activation analysis;Photonnuclear reactio?   
        16
        |
        52
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7202036 false
        发布时间：2021-03-12
      • SHI Yuejiang,LING Bili,WAN Baonian,DING Bojiang
        Issue 12, (2000)
        摘要：A seven-channel NaI(T1) detector array installed on HT-7 superconducting tokamak has been used to measure the hard X-ray (20keV <Ehv <500keV) emitted from plasma. The physical mechanism of LHW propagation and absorption in plasma was investigated by the measurement of hard X-ray radial distribution at different discharge parameters.  
        关键词：Tokamak;Hard X-ray;LHCD;Nal(T1) detector   
        18
        |
        76
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7201977 false
        发布时间：2021-03-12
      • LIU Rong,LIN Libin,WANG Dalun,LI Yijun,JIANG Li,WANG Mei,LIU Chenglong,YANG Ke
        Issue 12, (2000)
        摘要：In a cement shielding designed by ourselves, technique for measuring reflection neutrons was studied by using the depleted and enriched uranium fission chambers. In different experiment systems, absolute fission reaction rates, derived from reflection neutrons, at different positions of the surface of an iron spherical shell were measured. The experimental error was about 3.5%-4.1%.  
        关键词：Cement shielding;Reflection neutrons;Absolute fission rates   
        12
        |
        111
        |
        9
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7201960 false
        发布时间：2021-03-12
      • LI Guisheng,ZHANG Tianmei,LI Zongwei,SU Youwu,ZHANG Shumin
        Issue 12, (2000)
        摘要：Neutron energy, fluence rate, angular distributions and dose equivalent rate distributions around thick Be, Cu, An targets bombarded by 50MeV/u 18O-ion were measured by using a threshold detector activation method. The neutron yields and emission rates in the forward direction were obtained. The measured results were compared with the results obtained in low energy heavy ion studies.  
        关键词：O-ion;Thick target;Neutron dosimetry parameter;Neutron yield;Dose equivalent rat?   
        10
        |
        37
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7202066 false
        发布时间：2021-03-12
      • WU Yunping,JIA Wenyi,FANG Fang,ZHOU Rongsheng,LE Renchang
        Issue 12, (2000)
        摘要：A portable Gamma spectrometer based on Notebook PC. settled the deficiency of other kind spectrometers based on MCU. Its software with powerful ability of file manager and graphic interface under Windows98 operating system realized processing data on field, which used to be accomplished in laboratory. Several key problems during developing its software were presented here.  
        关键词：Portable γ spectrometer;Real-time communication;Multithread   
        17
        |
        60
        |
        7
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7201997 false
        发布时间：2021-03-12
      • YU Xuefeng,Erkin,ZHANG Guoqiang,REN Diyuan,LU Wu,GUO Qi,YAN Rongliang
        Issue 12, (2000)
        摘要：N-type MOS capacitors have been experimented with Substrate Hot-carrier Ejection (SHE). By means of high frequency and quasi-static C-V techniques, the characteristics and mechanism of MOS structure’s damage induced by SHE have been studied from the changes of oxide charges and interface states as well as distribution of the interface state with the energy before and after SHE. The results are helpful to further harden MOS devices from hot carrier ejection damage.  
        关键词：Hot-carrier ejection;Damage;Interface states;Oxide charge@   
        18
        |
        78
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7202051 false
        发布时间：2021-03-12
      • JING Qiliang,CHEN Lai,WEI Pin,GAO Hanyin,FENG Kan
        Issue 12, (2000)
        摘要：The synthesis of a waterborne acrylic resin which was curable by radiation is presented. The variation of NCO% in synthetic process was analysed and the water thinning curve for this resin was given out. A water-borne paint was composed by the acrylic resin, with some adjuvants. The effect on the crosslinking degree has been studied concerning the light exposure time, the distance between light and film,different kinds of photoinitiators, the photosensitive adjuvants, as well as reactive diluent. The cured film showed good performance.  
        关键词：Paint;Acrylic resin;UV curing   
        14
        |
        578
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7205100 false
        发布时间：2021-03-12
      • Issue 12, (2000)
        摘要：采用新生态Ｃｕ（Ｉ）催化碘同位素交换反应制备了１２３Ｉ－ＢＭＩＰＰ。经高效液相色谱法分高纯化，产品放射化学纯度＞９５％，放化产率为３０％－４０％，经细菌检验、热原检验证明无菌、无热原．动物体内分布显示心肌摄取１２３Ｉ－ＢＭＩＰＰ快速、存留时间长，与周围临近组织的放射性比值高，适合于ＳＰＥＣＴ代谢显像。  
        关键词：心肌代谢显像;123I标记;侧链脂肪酸;BMIPP   
        18
        |
        63
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7202080 false
        发布时间：2021-03-12
      • LU Shuzhuang,DAI Zhimin,ZHAO Xiaofeng
        Issue 12, (2000)
        摘要：The theory of transition undulator radiation was described first, then the properties of infrared and far-infrared transition undulator radiation of SSRF U9.0 were explored by the methods of analytical treatment and numerical simulation, and the influence of beam energy spread, emittance, and magnetic field errors on transition undulator radiation was given also. It was shown that the flux density of the infrared and far-infrared transition undulator radiation of the SSRF U9.0 was high (e.g., the maximum flux density might reach 35x1013 photons/(s·mrad2· BW), collecting angle φ =0.23mrad, and the effects of beam energy spreed, emittance and magnetic field errors on the radiation flux density were small.  
        关键词：Undulator;Transition undulator radiation;Infrared;Intensity;Beam energy spread;Emittance;Magnetic field errors   
        12
        |
        67
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7202009 false
        发布时间：2021-03-12
      • WANG Min,SHEN Zhongqun
        Issue 12, (2000)
        摘要：A new four-bag byproduct collector was designed and used to solve obstruction of byproduct in the collector of the laboratory equipment of electron beam flue gas purification in SINR. A new on-line SO2 and NOx measuring system was installed to replace the chemical analysis. The research works and results on the new experimental installation were presented with some discussions.  
        关键词：Electron beam;Experimental equipment;SO2 and NOx;On-line sampling system   
        19
        |
        70
        |
        3
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7201988 false
        发布时间：2021-03-12
      • ZOU Yuehua,WEN Bo,XU Hongxiang,QIN Yonglie
        Issue 12, (2000)
        摘要：An optimal design with analytical hierarchy process on nuclear mechanical dampers manufactured by our university was described. By using fuzzy judgement matrix the coincidence was automatically satisfied without the need of coincidence test. The results obtained by this method have been put into our production practices.  
        关键词：Nuclear power plant;Mechanical damper;Analytical hierarchy process(AHP);Optimal design?   
        17
        |
        98
        |
        6
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7204727 false
        发布时间：2021-03-12
      • ZHENG Mingguang,XU Jiyun ZHANG Jinshun
        Issue 12, (2000)
        摘要：The present status of instrumentation and control (I&C) as well as automation used in nuclear power plant (NPP) in the world was surveyed in this paper. The drawbacks and deficiency resulting from the analog I&C used in the conventional NPP were described. Finally the characteristics of the modern computerized I&C and advanced main control room, and the requirements on the development of the hardware and software of computerized I&C were dissertated intensively.  
        关键词：PWR NPP;Instrumentation and control;Computerized;Common mode/cause fail?   
        74
        |
        418
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 7202107 false
        发布时间：2021-03-12
      0