最新刊期
      卷 0 ， 期 0 ， 2020
      • TIAN Liang ZHANG Xinyi
        Issue 1, (2003)
        摘要：The award of a share of the 1997 Nobel Chemistry Prize was the crystal structure of mitochondrial F 1-ATPase determined at 0.28nm atomic resolution using data collected at the SRS, Daresbury, UK, and this was the first Nobel Prize for synchrotron radiation-based work. The coming of age of post-genomics was further enforced by synchrotron radiation with characteristics of high intensity, high collimation and continuous tunable wavelength.  
        关键词：Synchrotron radiation;Bio-macromolecules;ATP synthase;Three-dimensional structure   
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        发布时间：2021-03-12
      • ZHOU Yingxue 1,3 SHI Xianghua 2 YU Gencai 1 ZHANG Xinyi 3 YAN Wensheng 4 WEI Shiqiang 4 XIE Yaning 5 1
        Issue 1, (2003)
        摘要：ZnO is a II-VI compound with a wide direct gap of about 3.37eV at room temperature. It is an important compound for information techniques. The ZnO thin films are deposited on Si (100) substrate by molecular beam epitaxy (MBE) associated with oxygen atmosphere method, under different temperatures of molecular beam source and substrate. The Zn buffer layer is used in order to minimize the effect of mismatch of crystal lattice between Si and ZnO. In the X-ray diffraction spectrum of ZnO/Zn/Si (100), peaks specific to ZnO at (100), (002), (101), (102) and (103) were observed. Images from the atomic force microscope show that the ZnO films are composed of small granules with the size of 80-90nm approximately. The local structure of ZnO films has been studied by the synchrotron radiation EXAFS technique. Some local structural parameters such as bond length, coordination number and disorder degree are obtained for the first shell. We suggest that the disorder of as grown ZnO films be probably due to the existence of hanging bonds on the surface of ZnO nanometer granules.  
        关键词：MBE;ZnO;EXAFS;XRD   
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        发布时间：2021-03-12
      • ZHOU Renkui 1 FU Xuan 1 ZHOU Sizhong 1 XIA Shaojian 2 HE Jianhua 2 WEN Li 1 1
        Issue 1, (2003)
        摘要：The bending principle of sagittal focusing crystal and the movement equation of flexible hinges are analyzed, and the principle of bending structure based on flexible hinges for sagittal focusing crystal is also elaborated. To restrain meridional deformation, an effective method is put forward. Within the arrange of 5-20keV, the sagittal focusing ratio of the bending structure is 3:1, the relative error of focusing curvature is less than 0.75%, and the focusing facula dispersion is 25%. At 10keV the error of focusing surface deformation is less than 2".  
        关键词：Sagittal focusing;Flexible hinges;Synchrotron radiation   
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        发布时间：2021-03-12
      • CHEN Chunying 1 ZHANG Peiqun 1 GAO Yuxi 1 CHAI Zhifang 1 HUANG Yuying 2 1
        Issue 1, (2003)
        摘要：The distributions of metal ions in rabbit metallothionein (MT) and its protein band in sodium dodecyl sulfate-polyacrylamide gel after electrophoresis were determined by synchrotron radiation X-ray fluorescence (SRXRF) analysis. Results showed that MT-1 mostly contained zinc, which amounted to 97.9% of the total metallic content and MT-2 mainly contained zinc and cadmium. This paper also introduced the method to determine the relative amounts of protein-bound metal ions in situ by combination of electrophoretic separation and SRXRF analysis.  
        关键词：Metallothionein;Synchrotron radiation X-ray fluorescence;Electrophoresis   
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        发布时间：2021-03-12
      • LI Huhou WEI Mingjian
        Issue 1, (2003)
        摘要：Dating with selected frequency optical luminescence is a method developed in our laboratory. It means that the wavelengths of both stimulating source and emitted photons can be selected. Then, the separation of minerals in the fine grain samples can be realized based on the above selections. A new equipment for SFOL has been created in our laboratory. The prototype is named BG1999. Its running and the quality of data acquisition in last year were satisfactory.  
        关键词：Selected frequency optical luminescence (SFOL);Dating   
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        发布时间：2021-03-12
      • LI Huhou CHEN Shu’ e WEI Mingjian
        Issue 1, (2003)
        摘要：It is very important to know how to get the equivalent dose of the sample in luminescence dating. First of all in selected frequency optical luminescence (SFOL) dating is to select the characteristic frequency of emitted photons from the sample (usually mixture of minerals). Then, equivalent dose of the sample can be obtained when the characteristic frequency was determined. The present paper has discussed which kinds of equivalent dose can be used to calculate age and several methods have been suggested. Some results coming from different methods have been collected in the table for comparison.  
        关键词：Selected frequency optical luminescence (SFOL);Equivalent dose;Dating   
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        发布时间：2021-03-12
      • LIU Shunsheng 1 LI Xu 1 FU Huifang 1 Günther A. Wagner 2 1
        Issue 1, (2003)
        摘要：Electron Spin Resonance (ESR) and 3-dimensional Thermoluminescence (3-D TL) spectra of natural diamond, high temperature-high pressure artificial diamond and high temperature-low pressure chemical vapor deposited (CVD) diamond were determined. The characteristics of spectra have been studied. It is found that isolated nitrogen, nitrogen exchange pair and nitrogen atom pair ( S =1) are main forms of electron spin resonancial nitrogen in natural and high temperature-high pressure artificial diamonds. The spectrum of CVD diamond is smpler, and contains only one peak caused by suspended bond of unsaturated carbon ones. For 3-D TL spectra, natural diamond has two peaks (～370 nm and ～510 nm) in 100-200℃ temperature range, high temperature-high pressure artificial diamond only has ～370 nm peak, and CVD diamond only has ～500 nm peak. These characteristics would be useful for the quality inspection and classification of diamonds, as well as for the study of geologic actions associated with natural diamond.  
        关键词：Electron spin rosonance;3-dimensional thermoluminescence;Diamond   
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        发布时间：2021-03-12
      • TAN Kaixuan 1 LIU Shunsheng 2 XIE Yanshi 2 Günther A. Wagner 3 1
        Issue 1, (2003)
        摘要：The characters of 2D TL, 3D TL and OSL of pyrite occuring in Ashele copper deposit and Jinxin gold deposit, Xinjiang were analyzed. There existed notable difference in TL and OSL of pyrite in copper deposit and auriferous pyrite in gold deposit. The intensity of TL and OSL of pyrite in copper deposit is larger than that in gold deposit. The TL peak temperature of pyrite in copper deposit is about 15-30℃ higher than that in gold deposit. In 3D TL, the wavelength of low temperature (130-170℃) TL peak is 720nm for pyrite in copper deposit and 390nm for auriferous pyrite in gold deposit. The difference of impurity elements results in the difference in crystal texture and center of pyrite, which mainly belongs to electron center type for pyrite in copper deposit and to vacancy center type for pyrite in gold deposit. The different centers brought about the notable difference in TL characters for the two kinds of pyrite.  
        关键词：Thermoluminescence;Optically stimulated luminescence;Trace element;Electron center;Vacancy center;Pyrite   
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        发布时间：2021-03-12
      • ZHAO Hua
        Issue 1, (2003)
        摘要：A multiple-aliquot regeneration-dose (MAR) combining with "Australian Slide method" and a single-aliquot regeneration-dose (SAR) protocol, involving stimulation of the same disc with an infra-red laser diode followed by blue LEDs, were applied to determine the equivalent dose (ED) of polymineralic fine-grains from loess samples collected from the top and the bottom of the Malan loess (L1) respectively. The multiple aliquot IRSL and GLSL, and single aliquot IRSL, BLSL and (post-IR) BLSL ages are presented for two fine grain (4-11 μm) fractions of the loess samples. The preliminary results show that the MAR protocol may be a perfect choice for luminescence dating of loess fine-grain samples, and can be employed to obtain an available age estimate for loess sample as older as approximately 80 ka BP., and that the age estimates obtained from the post-IR are closed to the independent age determinations for the younger (age less than 10 ka) fine grain samples. The ages from the post-IR, however, are much underestimated to those from independent method or expected estimates for the older samples. It may be suggest that the single-aliquot (post-IR) BLSL protocol of the fine grains could be a suitable choice to date the younger samples.  
        关键词：OSL dating;Fine grains;Single aliquot;Multiple aliquot   
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        发布时间：2021-03-12
      • ZHANG Jiafu 1 MIAO Jianmin 2 WANG Xuerong 3 ZHOU Liping 1 1
        Issue 1, (2003)
        摘要：The tamped earth from the construction base of the city walls in the Yanshi walled city in Luoyang, China, was dated using the optical dating technique. The optical ages of the tamped earth samples are 4.0ka, 2.2ka and 2.5 ka respectively. Although these ages are older or younger than the archaeological ages, which imply that some quartz grains were exposed to daylight during the construction of the city walls, the optical dating technique is suitable for dating tamped earth.  
        关键词：Optical dating;Tamped earth;The Yanshi walled city   
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        发布时间：2021-03-12
      • LEUNG P L
        Issue 1, (2003)
        摘要：Five Chinese ancient porcelain samples from past dynasties of China were dated by BLSL method. The results show that the BLSL ages are in reasonable agreement with the archaeological dates.  
        关键词：Blue light stimuated luminescence;Porcelain;Dating   
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        发布时间：2021-03-12
      • WANG Weida 1 LEUNG P L 2 XIA Junding 1 ZHOU Zhixin 1 1
        Issue 1, (2003)
        摘要：If a modern pottery is artificially irradiated by γ-rays of 60 Co source, the modern will become ancient when the pottery is dated by the thermoluminescence technique. For distinguishing artificial irradiation a study was made. Meanwhile the "fine-grain" and "pre-dose" techniques were used respectively for measurement of the paleodose in a fine-grain sample from the same pottery. If the paleodose measured by the fine-grain technique is greater than that by the pre-dose techniques, we can affirm that the difference between two paleodoses is due to α dose and this paleodose containing α component results from natural radiation, the pottery therefore is ancient. If two paleodoses are equal approximately, i.e. α dose is not included in the paleodose, the paleodose comes from artificial γ irradiation and the pottery is an imitation.  
        关键词：Thermoluminescence dating;Ancient pottery imitation;Artificial irradiation;Discrimination   
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        发布时间：2021-03-12
      • JI Fengju ZHENG Rongzhang LI Jianping XU Xiwei WANG Feng
        Issue 1, (2003)
        摘要：There are multistage terraces with different height along Aerjin Fault developed on the numerous rivers which flow out from Aerjin Mountain. On the terraces, there is loess with different thickness deposited. The TL ages of the loess show that the loess covered on the terraces with different height is deposit since last glacial-stage in a period of great prosperity, that is, after 16kaBP, and can be divided in to four deposit periods roughly: 15-16kaBP, 10-13kaBP, 6-7kaBP and 3-4kaBP. It is well known, that loess is a sort of powder dust sediment formed in dry climate environment. So above results indicate that area along the Aerjin Fault has been in dry climate environment all the way since last glacial-stage in a period of great prosperity. The division of deposited periods of loess also reveals that there is a climate fluctuation for a short duration under the continued dry climate environmemt. This result is consistent with the study by predecessors about the evolution of salt lake in Chaidamu Basin and the Northern Tibet and the development of Qinghai Lake.  
        关键词：Loess;Aerjin Fanlt;TL age   
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        发布时间：2021-03-12
      • XIE Yanshi 1 TAN Kaixuan 2 LIU Shunsheng 3 Günther A. Wagner 4 1
        Issue 1, (2003)
        摘要：The chaotic characters of OSL spectrum of quartz were analyzed. The results show that the OSL spectrum of quartz is a chaotic dynamic system with the Lyapunov exponent of 0.2204-0.2865 and the fractal dimension of 3.60-4.20 for chaotic attractors.  
        关键词：Chaotic attractors;Optically stimulated luminescence;Quartz   
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        发布时间：2021-03-12
      • ZHENG Gongwang ZHU Zhongli TANG Shiyi REN Xiusheng TIAN Zhaoyu
        Issue 1, (2003)
        摘要：The natural thermoluminescence (TL) and annual dose of a sample are two important parameters in the TL dating. They represent radioactive radiation level of surroundings around the sample. Experimental data show that radiation level of surroundings depends on the control influence of lithology. After a long time reconstruction, the radiation level of the earth surface surroundings will be diminished gradually and become homogeneous.  
        关键词：Thermoluminescence;Radiation dose;Surroundings inspection   
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        发布时间：2021-03-12
      • TANG Qiang ZHANG Chunxiang LUO Daling LI Hualian 1
        Issue 1, (2003)
        摘要：The MgSO 4:Tm,Mn,P has been prepared by doping and co-doping method, and its two main thermoluminescence (TL) glow peaks are at 253℃ and 383℃ with wavelengths around 360, 460 and 660nm. By comparing glow curves of four materials (i.e. MgSO 4:Tm; MgSO 4:Tm,Mn; MgSO 4:Tm,P and MgSO 4:Tm,Mn,P), the role of the dopants Tm, Mn, P was discussed. The glow peak parameters, such as activation energy and frequency factors, were determined by deconvoluting the glow curves with gerneral order kinetics equations. The dose responses to gamma rays in the dose range from 0.1 Gy to 20 kGy were obtained and fitted by the composite action dose response function. The one hit factors R obtained are 0.397 and 0.127 for 253℃ and 383℃ glow peaks respectively.  
        关键词：MgSO 4;Tm;Thermoluminescence   
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        发布时间：2021-03-12
      • YE Yuguang 1 DIAO Shaobo 1 GAO Juncheng 2 1
        Issue 1, (2003)
        摘要：Three gypsum samples collected from Linxia Basin, Gansu Province were measured by ESR technique for dating. It has been found that the ESR intensities at g =2.004 increase with the increase of artificial irradiation dose and have a potential for dating. ED values from the ESR intensities at g =2.004 are obtained and the ESR ages can be deduced.  
        关键词：Arid regions;Gypsum;ESR dating   
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        发布时间：2021-03-12
      • GONG Gelian LIU Shunsheng
        Issue 1, (2003)
        摘要：Thermoluminescent phenomenon resulting from two kinds of complicated geological situation, Ordos Basin and Huainan deposits in Anhui Province, is studied by the means of thermoluminscence counting method. It is shown that: (1) there are no apparent abnormalities of natural TL detected from the rock samples selected in the first 1000 meter depth of the Earth, and these natural TL are accumulated through natural radiation effects; (2) the natural TL shows statistically obvious reducing trends for the rock samples selected under the 2000 meter depth, and even no detectable TL is found for those rocks selected at 4000 meter depth. (3) the natural TL peaks corresponding to high temperature generally shift to the direction of higher temperature for the quartz-related rock samples, and several thermal events which occurred during the geological times might be responsible for this case.  
        关键词：Natural thermoluminescence;TL peaks;Thermal events   
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        发布时间：2021-03-12
      • ZHANG Yuhua CHEN Shu’ e WANG Lijun
        Issue 1, (2003)
        摘要：A calibration method of radiation dose transfer from Academy of Matrologica Sinica has been used to the irradiation system in Optical Luminescence Dating Laboratory of Captial Normal University. In the experiment, three kinds of dosimeter were used. According to dose reading on the equipment of RGD-3B, photon counting and integral area of the luminescence peak, the absorbed doserates at different distances from the radiation source have been measured with LiF, QF301 and Al 2O 3  
        关键词：Dose calibration;Radiation source;Dosimeter   
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        发布时间：2021-03-12
      • ZHAO Jianxing LI Yuanfang WANG Jiaqi WU Furong XIAO Wuyun LIANG Weiping
        Issue 1, (2003)
        摘要：This paper reported the basic performances of RGD3B TL reader that is very suitable for dating in archaeology. The matters needing attention when using this instrument and its routine maintenance were also described.  
        关键词：Dating;Thermoluminecence;TL reader   
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        发布时间：2021-03-12
      • CAO Weiguo 1,2 BAO Borong 1,2 HUANG Wei 2 YANG Xingcun 1 HANG Jianzhong 2 CHEN Jie 2 1
        Issue 1, (2003)
        摘要：Two new extractants, 2,4-dihydro-5-methyl-2-(2-chlorobenzoyl)-3H-pyrazol-3-thione (HCBMPPT) and 2,4-dihydro-5-methyl-2-(2-fluorobenzoyl)-3H-pyrazol-3-thione (HFBMPPT) were synthesized. The composition and structure of theses two compounds were confirmed by means of elemental analysis, mass spectrometry, IR, 1H NMR and X-ray crystal analysis.  
          
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        发布时间：2021-03-12
      • LIN Yingwu WEI Haipeng ZHANG Xiuli LI Junling YIN Duanzhi QIU Shi WANG Yongxian
        Issue 1, (2003)
        摘要：Two different particle sizes of antimony sulfide nanocolloids were prepared and labeled with 188 Re. Their uptake by rabbit’ s popliteal lymph node and inguinal lymph node was also studied. Results showed that the mean diameters of the two kinds of particles were 10.2nm and 44.7nm respectively. The labeling condition was optimized. When 4mg/mL SnCl 2·2H 2O, 6g/L Vit C and 1mL nanocolloids were reacted in 60℃ water bath for 60min, the labeling yield were both greater than 95% and excellent in vitro stability was also observed. White New Zealand rabbits were injected subcutaneously on the dorsum of the hind foot with two kinds of 188 Re-Sb 2S 3. The uptake by popliteal lymph node and inguinal lymph node were measured quantitatively by using a gamma detecting probe. Results showed that the highest uptake of 10.2nm and 44.7nm nanocolloids by popliteal lymph node reached 17.4% and 19.4% of the total 1.5 to 2h post injection, respectively; the highest uptake by inguinal lymph node reached 4.7% and 4.2% of the total about 2h post injection, respectively.  
        关键词：Re-Sb 2S 3;Nanocolloids;Lymph node;Gamma detecting probe   
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        发布时间：2021-03-12
      • WEI Haipeng LIAO Xizheng WANG Hao QIU Shi
        Issue 1, (2003)
        摘要：This article introduces an instance of the charge sensitive preamplifier with small size used in semiconductor detector. The techniques of how to measure noise and how to reduce it are also described.  
        关键词：Charge sensitive;Nuclear detector;Noise;SMD   
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        发布时间：2021-03-12
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