最新刊期
      卷 0 ， 期 0 ， 2020
      • Shao Qiyun Pan Zhengying
        Issue 3, (1991)
        摘要：A high-speed Monte Carlo computer program simulating the sputtering of multicom ponent multi-layer dynamic targets is presented, including computational procedure,program block diagram and applicability. The atomic scattering is governed by the Moliere approxi mation of the Thomas-Fermi potential and is evaluated with the binary-collision approximation. The procedure takes about half of the computing time used in original program with nearly the same accuracy of evaluation. This program can be used to calculate sputtering yields of multicomponent amorphous targets for keV ions bombardment and give en ergy and angular distributions of sputtered species as well as the depth of origin of the sputtered particles in solid targets.  
          
        9
        |
        48
        |
        3
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8934890 false
        发布时间：2021-04-20
      • Chen Yilong Xu Binfu Huang Suqiu Wang Yuting
        Issue 3, (1991)
        摘要：Mossbauer measurements in the temperature range of 12-300 K have been performed on three kinds of new binuclear Fe（Ⅲ） porpnyrin complexes. The Mossbauer spectra similar to that of ferric hemin show the electron spin-spin relaxation process. The relaxation time increases with distance between two porphyrin rings and the results provide an evidence of formation of the complex.  
          
        8
        |
        48
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8934879 false
        发布时间：2021-04-20
      • Gao Zhengyao Chen Songhua
        Issue 3, (1991)
        摘要：The original firing conditions of the Yuan Dynasty Ru porcelain samples were stu-died by Mossbauer spectra. The result showed that the Ru porcelain glaze was fired in re-ducing atmosphere and the original firing temperature was deduced to be about （1150±50）℃. The Ru-porcelain body was found to be fired in stronger reducing atmosphere and it original firing temperature was also about （1150±50）℃.  
          
        10
        |
        77
        |
        2
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8934900 false
        发布时间：2021-04-20
      • Pang Deling Ma Guocai Zhou Zhixin
        Issue 3, (1991)
        摘要：A now type of passive integrating radon monitor which makes use of a new CR-39 （DPA） track detector inside a diffusion chamber has been developed. A statistical analysis of sensitivity shows that reliable readings can be made down to a 2.2Bq·m-3 . month exposure. With a high sensitivity and reliability, this system can be conveniently used in a variety of radon monitoring situations.  
          
        8
        |
        39
        |
        4
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8935076 false
        发布时间：2021-04-20
      • Rong Tingwen Lin Senhao Zhu Xinfang Bao JinrongWan Honghe Wang Wenmin Zou Zhiyi
        Issue 3, (1991)
        摘要：The polyacetylene film after being chemically doped with FeCl3 and implanted by 30 keV K+ ions can form a p-n junction with rectification property. The characteristics of the p-n junction were described. In addition, stabilities of both structure and conductivity were studied for FeCl3-doped polyacetylene films prepared with different methods and treated with different reagents.  
          
        9
        |
        41
        |
        3
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8934955 false
        发布时间：2021-04-20
      • Huang Boliang Zhang Yuhua Zhu Jianhuan Ding Xingnong Wei Hongxia
        Issue 3, (1991)
        摘要：The principle and dosimetric characteristic of a newly developed liquid core radioch romic OWG dosimeter （OWG-86） were described. The OWG-86 possesses higher OWG numerical aperture （leading to higher sensitivity and light-gathering power）, less V energy dependence and better environmental stability than FWT-70 dosimeter （USA）.  
          
        8
        |
        27
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8934945 false
        发布时间：2021-04-20
      • Li Jie Wang Jin
        Issue 3, (1991)
        摘要：It was found that radiation induced flatband voltage shift of MOS capacitors with positive gate bias is proportional to the third power of the SiO2 thickness. The experimental results indicate that radiation induced interface states play an important role in flatband voltage shift of MOS capacitors. It was discovered that in view of radiation hardness, 1000℃ is the best temperature for dry oxidation and that annealing at temperature above 1000℃ or hydrogen atoms coming into the Si-SiO2 interface will seriously degrade the radiation tolerance of MOS devices. It was supposed that radiation induced interface states mainly result from the existence of unionized excess silicon atoms in the Si-SiO2 transition layer.  
          
        8
        |
        99
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8934972 false
        发布时间：2021-04-20
      • Zhong Wenfa
        Issue 3, (1991)
        摘要：Calculation of Doppler broadening cross-sections from the single-level Breit-Wigner resonance parameters is presented by using the complex probability integral method. An example for 239Pu is given. The calculation time using this method at PDF 11/70 computer is about 50 times less than that using other numerical methods with the same accuracy.  
          
        9
        |
        41
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8935116 false
        发布时间：2021-04-20
      • Huang Shenwen Tuo Xianguo
        Issue 3, (1991)
        摘要：Analysis of white alloy was performed by using a portable radioisotope source X-ray fluorescence（XRF） analyser in the workshop of railway factories. Some methods to overcome segregation influence on the analysis and to correct matrix effects are discussed in detail. An effective mathematical model has been established XRF determination of white alloy could replace or partly repkce chemical analysis and make the analysis faster and reliable.  
          
        8
        |
        73
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8934985 false
        发布时间：2021-04-20
      • Rong Tingwcn Cheng Yuandi Bao Jinrong Lin Senhao
        Issue 3, (1991)
        摘要：The determination of carbon in silicon by proton activation was described. 12C （p, γ）15N and 13C（p, n）13N reactions were used. 13N was separated by an alkaline melting process. Sensitivity of the method is 0.1 ppm.  
          
        8
        |
        26
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8934994 false
        发布时间：2021-04-20
      • Liu Changshi
        Issue 3, (1991)
        摘要：Three kinds of herbage which are main pasture grass for sheep tending in Xinjiang have been analyzed by PIXE. The results show that the contents of some essential trace elements in reed of low nutritive value, are much lower than that in lucerne and narrow-leaved oleaster of high nutritive value. The probable cause of rocking back disease of lambs which happened in Xinjiang was explained based on the analytical results.  
          
        10
        |
        39
        |
        3
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8935023 false
        发布时间：2021-04-20
      • Liang Yinchun Wang Zhongyang Yu Xingying Chen Zuliang
        Issue 3, (1991)
        摘要：Radiation-induced graft copolymerization of styrene onto polyvinyl fluoride films was carried out by the 60Co-γ ray irradiation technique. The correlations of the rate of grafting with monomer concentration, dose rate of irradiation, film trickness and reaction temperature were studied and the rate of grafting was found to be proportional exponentially to the above former three parameters with index of 2.5, 0 and -1, respectively under the experimental conditions. The total activation energy of graft co-polymerization was determined to be 141.8 kJ/mol.  
          
        9
        |
        64
        |
        0
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8935012 false
        发布时间：2021-04-20
      • Luo Keyong
        Issue 3, (1991)
        摘要：A method of determing moisture of soil surface layer （0-20cm） by a subsurface neutron gauge with a Li-Glass detector was introduced. A hydrogeu-rich reflector was put on the surface. The results were shown to have a good linear correlation and a reasonable deviation, therefore the technique could be used in practice.  
          
        8
        |
        46
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8935005 false
        发布时间：2021-04-20
      • Zeng Fuxiang Lan Jun Hu Xiaozhong
        Issue 3, (1991)
        摘要：The measurement of protein concentration with liquid scintillation counting is a new and accurate method. 58 human semen samples were measured by this method and compared with the routine Lowry’s colorimetric analysis. The results from both methods were closely related to each other （P<0.001） and no significant difference between these two methods was found （P>0.05 for T test）.  
          
        9
        |
        32
        |
        1
        <HTML>
        <L-PDF><Meta-XML>
        <引用本文> <批量引用> 8935046 false
        发布时间：2021-04-20
      0