最新刊期
      卷 0 ， 期 0 ， 2020
      • HOU Mingdong LIU Jie ZHANG Qingxiang
        Issue 7, (2002)
        摘要：Latent track formation is a major effect of the interaction of energetic ions with solids. Formative tracks can be revealed by applying many different techniques like chemical etching, electron microscopy, Rutherford backscattering etc. The size and the topography of these tracks are characteristic for the definite ion-solid interaction as well as the deexcitation process. The information on microscopic mechanism can be obtained by studying how the track size changes as a function of the ion energy and various target parameters. This paper intended to give a representative review of investigations dominated by electronic energy loss, including the track formation, the observation techniques, the significant results obtained and the latest progress.  
        关键词：Latent track;Electronic energy loss;Thermal spike model;Coulomb explosion model   
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        发布时间：2021-03-12
      • LIU Feng WANG Yugang DU Guanghua XUE Jianming WANG Sixue YAN Sha ZHAO Weijiang
        Issue 7, (2002)
        摘要：Based on the scanning tunneling microscope (STM) observation on energetic-particle induced damage on the surface of highly oriented pyrolytic graphite (HOPG), a novel energetic-particle counter has been developed. The detection efficiency of the detector for heavy ions with keV energies is near 1. The count range is between 0.1×10 9-1×10 9ions·cm -2 and 0.1×10 14 -1×10 14 ions·cm -2 . With the atomic-resolution of STM, the counter can study the distribution of energetic particles in nano-scale. It can be used to detect the penetration behavior of low-energy ions through thin solid target.  
        关键词：Low-energy heavy particles;STM;Surface damage;Counter;Transmission   
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        发布时间：2021-03-12
      • WAN Junsheng 1 ZHANG Yin 1 ZHANG Lixin 1 Hashemi-Nezhad S R 2 Brandt R 2 XIA Haihong 3 DING Dazhao 3 1
        Issue 7, (2002)
        摘要：The neutron distribution for a spallation neutron source of (  8cm×20cm)lead target bombarded by 7.4GeV proton beam was studied using LR 115 2B detector. The theoretical code of CEM was used to interpret the experimental results, meanwhile, the activation method was exploited to check the experimental results of LR 115 2B and the theoretical simulation.  
          
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        发布时间：2021-03-12
      • WAN Junsheng 1 ZHANG Yin 1 ZHANG Lixin 1 Perelygin V P 2 Brandt R 2 XIA Haihong 3 DING Dazhao 3 1
        Issue 7, (2002)
        摘要：The experimental and theoretical methods were used to study the application of Lavsan detectors in the studies of spallation neutron source in the present work. The Lavsan detectors were utilized to measure the spallation distribution in the laed target (  8cm×20cm) bambarded by 3.7GeV proton beam. And the experimental results were compared with the theoretical simulation, meanwhile, the Lavsan results were also checked with the measurements of spallation product in the lead target.  
        关键词：SSNTD;Lavsan detector;Spallation neutron source   
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        发布时间：2021-03-12
      • LIU Jie 1 R.Neumann 2 C.Trautmann 2 C.Müller 2 HOU Mingdong 1 JIN Yunfan 1 1
        Issue 7, (2002)
        摘要：Damage on surface and in bulk of highly oriented pyrolytic graphite (HOPG) induced by variety of heavy ions was studied by scanning tunneling microscopy (STM). Hillocks rather than hollows were observed either on the original sample surfaces or on the cleaved surfaces. Compared to the original surface, the probability of track formation was significantly reduced in the deeper bulk layers. This could be understood by assuming a morphology consisting of a discontinuous sequence of damage segments instead of a homogeneous cylinder.  
        关键词：Heavy ions;HOPG;STM;Radiation damage;Tracks   
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        发布时间：2021-03-12
      • GUO Shilun LI Li
        Issue 7, (2002)
        摘要：Experimental studies have been carried out with 500MeV/u \ 56 Fe, 650MeV/u \ 40 Ar, 600MeV/u \ 28 Si and 180MeV/u \ 4He for T-12 type bubble detectors. The studies show that threshold property of bubble detectors can be expressed by critical rate of energy loss. Contrarily, restricted energy loss rate can not be the criterion of track formation in bubble detectors under ordinary condition for the reason that different heavy ions create tracks at different critical values of the restricted energy loss rate.  
        关键词：Bubble detector;Origin of threshold;Critical rate of energy loss;Restricted energy loss   
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        发布时间：2021-03-12
      • QIAN Wanyan CAI Xu ZHOU Daicui HU Zongrong
        Issue 7, (2002)
        摘要：This paper introduce the status of a new kind of nuclear emulsion experiment and an automatic system based on CCD-technique for measuring emission angles of charged particles in vertically exposed nuclear emulsion chambers.  
        关键词：Nuclear emulsion;Heavy ion;CCD micro-measuring system   
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        发布时间：2021-03-12
      • SHI Yongqian LI Yiguo XIA Pu LUO Zhangling
        Issue 7, (2002)
        摘要：This paper described the characteristic of subcritical reactor in accelerator driven clean nuclear power system. The measuring principle for neutron flux and neutron energy in subcritical reactor by solid state nuclear track detector (mica, CR-39) was introduced, and the measuring result was also given. The result shows that the solid state nuclear track detector is an effective method for subcritical reactor experimental research in accelerator driven clean nuclear power system.  
        关键词：ADS;Subcritical reactor;SSNTD   
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        发布时间：2021-03-12
      • LI Yiguo SHI Yongqian XIA Pu LUO Zhangling
        Issue 7, (2002)
        摘要：The response function of stack detector consisted of polyethylene, lead (gold) and CR-39 was obtained under the fixed chemical and electrochemical treatment condition. The calculated results show that the response function FWHM of stack detector consisted of lead is smaller than that of stack detector consisted of gold. The former resolution is better than the later. The response and response function peak value of the stack detector are changed with the increment of lead (gold) thickness and neutron energy, and the response function peak value for fixed thickness of polyethylene decreases with the increment of lead (gold) thickness. For fixed thickness of lead (gold), the response function peak value increases with the increment of polyethylene thickness and neutron energy, but the resolution of stack detector becomes poorer.  
        关键词：Response function;Stack detector;Neutron energy spectrum   
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        发布时间：2021-03-12
      • XIE Hongmei WEI Zengquan HAO Jifang
        Issue 7, (2002)
        摘要：CR-39 solid state nuclear track detector (SSNTD) was calibrated with heavy ions from an accelerator which were used to simulate space heavy ions in the paper. A mathematical equation has been obtained with physical analysis and calculation method. According to that ion identification and energy estimation can be performed through measurement of etched tracks in CR-39. Finally, the results were discussed.  
        关键词：Space heavy ion;CR-39 solid state nuclear track detector;Calibration experiment;Ion identification   
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        发布时间：2021-03-12
      • LIU Shunsheng 1 G.A.Wagner 2 TAN Kaixuan 1 R.Jonckheere 2 1
        Issue 7, (2002)
        摘要：The fission track ages (FTA) of several apatite and zircon samples from Habahe rock body in Altai were determined. The FTA of apatites were 51.1-76.9Ma, and FTA of zircons were 141-149Ma. Modelling of the palaeotemperature evolution [ T(t) -path] of rock body relies on confined track length measurements and the annealing equations of Laslett et al. (1987). The thermal and uplift history of this region was discussed.  
        关键词：Fission track;Thermal history;Apatite;Zircon   
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        发布时间：2021-03-12
      • WU Qianhong 1 LIU Shunsheng 1 R.Jonckheere 2 G.A.Wagner 2 1
        Issue 7, (2002)
        摘要：By using the fission track dating technique, a preliminary study was carried out on the fission track ages (FTA) of apatite, their distribution patterns and hints over the tectonics activities during Mesozoic and Cenozoic in the east Dabie area. Attempts were also made to improve the conventional statistical method for the tracks. Ranging from 59.4±3.4Ma to 105.6±9.8Ma, the FTA results of apatite spread in a wide range and increased rapidly from the east to the west area. Sine 95Ma, the uplift rate has been quite slow and asymmetry. The FTA value in the middle area of Xiaotian-Mozitan Fault may imply its uplift in Cretaceous. The faulting should be the main control factor for the uplift of this area.  
        关键词：Fission track;Uplift;Unordinary FT method   
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        发布时间：2021-03-12
      • LI Xiaoming PENG Gelin
        Issue 7, (2002)
        摘要：In order to explore potential resource of coalbed methane in Xinji coal deposit of Huainan coalfield, its tectone-thermal evolution history was studied by using fission track technique. The results showed that there had been 3 or more times of significant thermal events occurred in this area since the late Palenzoic Era. The paleo-geothermal gradient was higher than that of the present. It was estimated that the denudation thickness in this area should be over 2000m. Mainly formed between 240-140Ma, no abundant methane could be generated in such condition. Furthermore, the tectone-thermal events would release the most of methane gases. So, the potential resource of the coalbed methane in this are might be limited.  
        关键词：Fission track;Thermal events;Paleo-geothermal gradient;Coalbed methane   
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        发布时间：2021-03-12
      • LUO Yisheng ZHOU Yu WANG Xingong
        Issue 7, (2002)
        摘要：Image analysis technique is very important in automatic measurement of nuclear track especially in measurement of track parameter. This paper describes the methods of automatic counting and parameter measurement by the technique in solid state nuclear detector as well as its main applications.  
        关键词：Solid nuclear track detectors;Image analysis technique;Parameter measurement   
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        发布时间：2021-03-12
      • YANG Mingli Shinji Tokonami 2 CAI Zhenmin 3 LI Xianjie 1 HE Wenxing 3 1
        Issue 7, (2002)
        摘要：Rn concentrations in air in the surrounding region of a uranium mill tailing impoundment were surveyed. Some results including the range of Rn concentrations, the Rn distribution related to the direction from the Impoundment, and the Rn distribution related to the distance from the impoundment were presented. The survey lasted for 1 year, the Rn monitors called KF606 from China and MK-Ⅱ from Japan were used. Each sample was measured both by KF606 and MK-Ⅱ, therefore a long-term intercomparison between KF606 and MK-Ⅱ was also compared.  
        关键词：Radon;Radon survey;Uranium mill tailing;Passive radon detector   
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        发布时间：2021-03-12
      • XIAO Detao ZHAO Guizhi LING Qiu LIANG Yong
        Issue 7, (2002)
        摘要：The parallel radon and thoron concentration measurement method was adopted to investigate radon and thoron level in two types of dwellings (The walls are made of soil or soil brick, and red brick respectively) in Xinwen village. The preliminary measurement results indicate that more attention must be paid for the risk of environmental thoron in farmer’s dwellings, because the effective dose from thoron daughters almost equals to that of radon daughters in some dwellings with soil wall.  
        关键词：Radon level;Thoron level;Exposure;Parallel measurement   
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        发布时间：2021-03-12
      • SHANG Bing
        Issue 7, (2002)
        摘要：A passive integrating dosimeter with two diffusion cups was applied for detecting 222 Rn and 220 Rn simultaneously. To let both nuclides enter in easily, one of the cups had membrane with higher permebility. However, the other cup with lower permeability membrane could only allow the entering of 222 Rn. Hence, 222 Rn and 220 Rn can be detected simultaneously by such dosimeters.  
          
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        发布时间：2021-03-12
      • GUO Hongying HUANG Zhengde
        Issue 7, (2002)
        摘要：This paper depicted the physical, chemical character and the applied fields of ion microporous membrane. The technological procedure of making ion microporous membrane, applications in microporous counter-feinting trademark by heavy ion imaging and medical filtrator in our institute were stated.  
        关键词：Ion microporous membrane;Technology procedure;Microporous counter-feinting trademark by heavy ion imaging;Medical filtrator;Applied fields   
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        发布时间：2021-03-12
      • WAN Jinglin
        Issue 7, (2002)
        摘要：Apatite fission track dating data of 9 samples selected from Pulu range in the northern regions of west Kunlun mountain were obtained. The results recorded that rapid uplift occurred in 8-9Ma B.P. in this region. The FT ages range from 20Ma to 4.5Ma, so we infer that the deposited age (3.5-1.6Ma) of Xiyu conglomerate is uncertainly corresponding to the time of rapid uplift of west Kunlun moutain.  
        关键词：Fission track;Uplift;Xiyu conglomerate   
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        发布时间：2021-03-12
      • CHEN Ling LIU Shutian LIAO Haitao
        Issue 7, (2002)
        摘要：The applications of the SSNTD methods for determination of hot particle location in filter and uniformity of radioactive sources were described. With the introduction of SSNTD and spark counter in the application of hot particle location, the general properties of six kinds of filter including the flow rate and flow resistance were measured and analyzed. By hot particle simulating sampling, the results of the hot particle location in filter and uniformity of U and Pu radioactive sources were given. The result shows, uniformity of U and Pu sources made by our procedure is better than that by ex-Soviet.  
        关键词：SSNTD;Hot particle;Radioactive source;Uniformity;U;Pu   
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        发布时间：2021-03-12
      • PANG Deling 1 ZHANG Jinhua 2 REN Lihua 1 QIAN Zhilin 1 HUANG Gang 1 1
        Issue 7, (2002)
        摘要：Using N-isopropyl-amide (NIPAAm) thermosensitive function material as monomer and nuclear track microporous membrane (NTMM) as baseline material, a thermosenstitive intelligent track membrane (TsITM) was prepared by the over-oxidization and pre-irradiation grafting techniques. The TsITM can be used to make a micro-switch controlled by temperature. The effects of pre-irradiation dose, grafting temperature, monomer concentration and reaction time on the grafting yield were investigated, and the dynamic range of responsive grafted track pores were observed. To obtain sub-micron responsive grafted track pores only a very thin thermosensitive layer is needed. The TsITM pores are capable of swelling and shrinking rapidly and respond more sensitively to temperature.  
        关键词：Dielectric track detectors;Nuclear track microporous membrane;Grafting;Intelligent track membrane   
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        发布时间：2021-03-12
      • ZHAO Kui WU Xiukun GUO Jiyu NI Meinan SUI Li MEI Junping BAO Yiwen YOU Qubo ZHOU Lipeng
        Issue 7, (2002)
        摘要：The carbon clusters were accelerated to MeV energies by HI-13 tandem accelerator. The beam current of the carbon cluster was measured. The carbon cluster bombarded CR-39 plastic nuclear track detector, and the tracks of C 1 and C 2 in CR-39 have been observed by atomic force microscopy.  
        关键词：Carbon cluster beam;Nuclear track detector;Atomic force microscopy   
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        发布时间：2021-03-12
      • HE Wenquan XIONG Yingfei
        Issue 7, (2002)
        摘要：Generally the surface of the sample should be smooth and flat in XRF analysis, but the ancient ceramics can hardly match this condition. Two simple methods are put forward in fundamental method and emperical correction method of XRF analysis, so the analysis of little sample or the sample with curved surface can be easily completed.  
        关键词：XRF;Ancient ceramic;Non-destructive analysis;Fundamental parameter   
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        发布时间：2021-03-12
      • ZHANG Xiuli ZHANG Chunfu LI Junling CAO Jinquan YIN Duanzhi WANG Yongxian
        Issue 7, (2002)
        摘要：Because small peptides have many advantages than monoclonal antibodies (MoAbs), radio-labeled peptides have emerged as an important class of radiopharmaceuticals and are the subject of doing nuclear medicine research. 188 Re (E β,max =2.11MeV; E γ=155keV; T 1/2 =16.9h) is an attrative therapeutic radionuclide and conveniently obtained on demand by elution from the 188 W/ 188 Re generator system. This article reviewed the physical and chemical properties, nuclear characters and biological behavior in vivo and vitro of the 188 Re. The approaches (direct labeling approach, preconjugate labeling approach, postconjugate labeling approach) to the labeling of peptides radiopharmceuticals were discussed and recent progress of the 188 Re labeled peptides (RC-160, VIP, et al ) were given. The forecasts of 188 Re labeled peptide radiopharmceuticals in their development were considered.  
        关键词：Re;Peptide;Labeling approach   
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        发布时间：2021-03-12
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