最新刊期
      卷 0 ， 期 0 ， 2020
      • LIU Zehua TAN Kaixuan ZHOU Quanyu
        Vol. 32, Issue 2, (2009)
        摘要：The rose quartz is a gemstone of quartz family minerals. Three dimension thermoluminescence spectra of rose quartz and wall rock quartz from in Altay, Xinjiang were analyzed. The 3D TL spectra of rose quartz have two low temperature TL peaks at 480 nm and 630 nm at 170°C, but only one peak at 480 nm is seen in wall rock quartz. The TL peak at 480 nm is related to hypogene magmatism and its luminescence centre is probably (AlO4)0 on a Si site, which indicate that rose quartz were formed by hypogene magmatism. The TL peak at 630 nm and 170°C appears to be characteristic of the rose quartz and is proposed to be due to [FeO4]0 center from the substitutional incorporation of Fe3+ into the quartz lattice. An intense TL peak at 990 nm and 330°C is also detected in both rose quartz and wall rock quartz.  
        关键词：3-D thermoluminescence;Rose quartz;Quartz;Altay   
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        发布时间：2021-03-12
      • KANG Shugang1,3 LU Yanchou1,2 WANG Xulong1 1
        Vol. 32, Issue 2, (2009)
        摘要：In this study, the regenerative-dose sensitivity change corrected IRSL and [post-IR] OSL intensities from fine-grained polyminerals were investigated to reveal their implications on environment change. In the same measurement condition, the regenerative-dose sensitivity change corrected IRSL and [post-IR] OSL intensity correlate well with the magnetic susceptibility, which believed to be a reliable environment change indicators in the Chinese Loess Plateau (CLP), since the last interglacial in the Luochuan profile. This implies the possible link between the IRSL or [post-IR] OSL intensity and environment change. In addition, four samples collected from the corresponding upper L1 of four sites located at the transect from northwest (NW) to southeast (SE) in the CLP were studied further to confirm the supposition above. The results showed both IRSL and [post-IR] OSL intensity increase from NW to SE, which is also the direction for weather change from cold and dry to warm and humid. Here, we concluded that IRSL intensity was determined by the feldspar species or content, while [post-IR] OSL intensity affected by the contribution of feldspar. This study showed regenerative-dose sensitivity change corrected IRSL and [post-IR] OSL intensity can be used to indirectly indicate the environment change in the CLP. The results also give a caution of luminescence dating by using [post-IR] OSL.  
        关键词：IRSL;[post-IR]OSL;Loess;Paleosol;Polyminerals;Environment change   
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        发布时间：2021-03-12
      • HAN Fei 1
        Vol. 32, Issue 2, (2009)
        摘要：In archaeological dating, the geochemical alteration of depositional environments may affect the measurement of external dose rate, which will cause the inaccuracy of dating result of methods basing on the principle of radiation exposure, such as thermoluminescence (TL) and electron spin resonance (ESR) dating. In this study, tooth fossils from three different depositional environments in Arago cave, south of France, were analyzed by combined ESR-U series method and the potential effects of geochemical alteration and inhomogenous of depositional environment on the dating results were revealed. The study shows that the age of samples from non-altered quartz mineral environment was dated about 330 ka, while the teeth from the other two environments (carbonated and phosphate areas) were dated around 480 ka, the former is about 150 ka younger than the latter. This phenomenon is probably caused by the overestimation of external dose rate in quartz mineral area. The study suggests that the dating researchers should pay much attention to geochemical alteration of depositional environment of samples.  
        关键词：Geochemical alteration;Arago cave;ESR dating;Tooth fossil   
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        发布时间：2021-03-12
      • FAN Yuxin1 ZHAO Hui1,2 CHEN Fahu1 1
        Vol. 32, Issue 2, (2009)
        摘要：To investigate the feasibility of OSL dating of lakeshore sediments, equivalent dose (De) values of quartz fractions in different grain-size were measured using the "Double-SAR" protocol of optical dating in four lakeshore sediments. There are two obvious different relations between De values and grain sizes. The first situation is that the De values are accordant with eath other for fractions between 63 μm and 400 μm with a slightly decreasing tread of De values as increasing of grain-size. The second situation is that the De values are accordant to each other for fractions between 125 μm and 300 μm, while the De values of the 63–90 μm and even the 90–125 μm fraction are obviously smaller than others. The first is consistent with those reported elsewhere, while the second can’t be understood by the previous theory.  
        关键词：Optical dating;Equivalent dose;Different grain-size quartz;Lakeshore sediments;Arid region   
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        发布时间：2021-03-12
      • ZHENG Gongwang WANG Yi WANG Hui TIAN Zhaoyu
        Vol. 32, Issue 2, (2009)
        摘要：In this paper, we investigate the feasibility of applying optically stimulated luminescence (OSL) method to oil and gas exploration, based on what has been achieved in this application with thermoluminescence (TL) method. Wave bands of 514, 600, 685, 740 and 800 nm were used to stimulate the samples in the test, with 5 s interval between each data-collecting time from 5 s to 35 s. The results showed that from the same sample, a number of photon response levels could be stimulated at different laser energies, and there were electronic dap in different energy traps by OSL or TL luminescence curves.  
        关键词：Thermoluminescence;Optically stimulated luminescence;Oil and gas exploration   
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        发布时间：2021-03-12
      • LI Dongxu WEI Mingjian WANG Junping PAN Baolin ZHAO Shiyuan LIU Zhaowen
        Vol. 32, Issue 2, (2009)
        摘要：Surface sand samples were collected in eight sites of the Horqin and Otindag deserts located in north to Beijing. BG2003 luminescence spectrograph was used to analyze the emitted photons and characteristic spectra of the selected frequency luminescence were obtained. It was found that high intensities of emitted photons stimulated by heat from 85°C–135°C and 350°C–400°C. It belong to the traps of 4.13 eV(300 nm), 4.00 eV(310 nm), 3.88 eV(320 nm) and 2.70 eV(460 nm), and the emitted photons belong to traps of 4.00 eV(310 nm), 3.88 eV(320 nm) and 2.70 eV(460 nm) were stimulated by green laser. And sand samples of the eight sites can respond to the increase of definite radiological dose at each wavelength, which is the characteristic spectrum to provide radiation dosimetry basis for dating. There are definite district characteristic in their characteristic spectra.  
        关键词：Selected frequency luminescence;Characteristic spectrum;Desert sand   
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        发布时间：2021-03-12
      • LIU Chunru1 YIN Gongming1 GAO Lu1 LI Jianping1 LIN Min1,2 1
        Vol. 32, Issue 2, (2009)
        摘要：For the fluvial sediments older than 200 ka, reliable dating method is yet to be established. ESR is a potential way. In this work, the Matuyama/Brunhes boundary (about 780 ka) samples were collected from the Gaoliying drill, Beijing and the Donggutuo site of the Nihewan basin, Heibei province. Quartz Ti-center ESR signals of the samples were analyzed. The results suggest that the ESR ages of the Matuyama/Brunhes boundary samples are consistent with the ages of paleo-magnetic investigation in deviation of 10%. Meanwhile, measurements of samples from the Gaoliying at different depths were performed. The results suggest that the ESR ages become older with the buried depth. All these indicate the reliability of quartz Ti-center in ESR dating of fluvial sediment, and we can gain the age of fluvial sediment at least younger than 780 ka using quartz Ti-center ESR signal.  
        关键词：Fluvial sediments;ESR;dating;Ti-center   
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        发布时间：2021-03-12
      • PAN Baolin WEI Mingjian LI Dongxu LIU Zhaowen LIU Chao ZHAO Shiyuan
        Vol. 32, Issue 2, (2009)
        摘要：Thermoluminescence (TL) response for an α-ray irradiation system (241Am) was examined with quartz grains of 11–40 μm. Quartz grains of different sizes, i.e. <4 μm, 4–11 μm, 11–40 μm, 40–74 μm and 74–100 μm, were irradiated to 2.0 Gy by γ-rays (137Cs), before they were irradiated to different doses by the α-ray irradiation system. TL response to the quartz grain samples was measured. TL response of the quartz grains smaller than 4 μm and 11–40 μm to α-ray irradiation is the best, as the α-rays cannot penetrate quartz grains larger than 40 μm. The TL response characteristic is related with quartz grain surface area. TL responses to α-irradiation of 11–40 μm quartz and aluminum oxide grains were compared. The α-irradiation TL response of aluminum oxide (330°C) is better than the quartz (375°C).  
        关键词：Quartz grains;α-ray;Thermoluminescence response;Aluminum oxide   
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        发布时间：2021-03-12
      • GAO Lu1,2 YIN Gongming1 LIU Chunru1 LIN Min1,3 LI Jianping1 FANG Jiahu2 1
        Vol. 32, Issue 2, (2009)
        摘要：Quartz grains were extracted from granite. Bleaching was carried out in four different area chosen for their different altitudes (Beijing, Yinchuan, Germu, Lhasa), in order to observe their behavior under different intensities of the UV (Ultra violet) component of sunlight. The result of our experiments indicate that the Ti center signal is totally bleachable by the natural sunlight and show that the Ti center signal was reduced to zero after about 128 h in Beijing and after 56 h for Lhasa. We can speculate that different intensity of the UV component of sunlight lead to different minimal time necessary to obtain the total bleaching of the quartz sample.  
        关键词：Sun bleaching;Quartz;Titanium center;ESR dating   
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        发布时间：2021-03-12
      • WEI Mingjian1 LIU Zhaowen1 GE Yonggang2 PAN Baolin1 WANG Junping1 CAI Maotang1 1
        Vol. 32, Issue 2, (2009)
        摘要：Changes in thermoluminescence signals from debris flow substance were studied. Samples were collected from Jiangjia valley, Xiaojiang drainage, Yunnan province. They include talus weathering product of the origin substance (five samples), cumulus substance of transition area (three samples) and surface moraine of accumulative area (12 samples). The results indicated that the weak and degenerate of the TL signals in the debris process was obviously. Samples 13–19 are supposed to be bleached enough by the sun light. This study showed that TL could be used for dating the debris flow event.  
        关键词：Thermoluminescence;Debris flow;Jiangjia valley   
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        发布时间：2021-03-12
      • ZHOU Quanyu TAN Kaixuan XIE Yanshi
        Vol. 32, Issue 2, (2009)
        摘要：Thermoluminescence characters of quartz from silicified breccia, which is related to mineralization, in Shuikoushan deposit, Hunan provinces, were analyzed. The TL characters of quartz are closely related to mineralization and can reflect the ore-forming information. The TL intensity (peak value) of quartz has direct correlation to the ore-forming intensity, that is, when the NTL peak value is larger the ore-forming intensity is also larger. The NTL emission peaks at 310°C–330°C reflect the intensive Au mineralization, and the ATL emission peaks at 200°C–220°C reflect the Au mineralization. Thermoluminescence analyses may suggest the prospecting index.  
        关键词：Thermoluminescence;Silicified breccia;Quartz;Prospecting index;Shuikoushan deposit   
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        发布时间：2021-03-12
      • LIU Zhaowen1 WEI Mingjian1 GE Yonggang2 LI Dongxu1 PAN Baolin1 1
        Vol. 32, Issue 2, (2009)
        摘要：Four debris flow samples were separated from Nidepin, Duozhao and Dawazigou valleys in Jiangjiagou valley area, Yunnan province. They were measured with BG2003 luminescence spectrograph. The characteristic spectra of the selected frequency luminescence of samples from the different locations were obtained. The wave length of emission photons from samples of Dawazigou valley and Jiangjia valley are 300, 310, 320, 400 and 460 nm when it was using blue light (488 nm) excited. When the green light (532 nm) has been used to excited, the wave length of emission photons from samples of Dawazigou valley and Duozhao valley are similar high at 310 and 320 nm. Furthermore, using the green light excited the samples from desert sand at the same lab condition; the number of absorbed photons of samples from desert sand is much higher than from debris flow.  
        关键词：Jiangjiagou valley;Debris flow;Luminescence spectrograph   
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        发布时间：2021-03-12
      • LIU Qian1,2 LIU Yi1 BIAN Fenggang1 FU Yuan1 WANG Jie1 XIA Shaojian1 1
        Vol. 32, Issue 2, (2009)
        摘要：Development of the data acquisition (DAQ) system based on LabVIEW platform for small angle X-ray scattering (SAXS) at Shanghai Synchrotron Radiation Facility (SSRF) is introduced in this paper. Experimental parameter setting of the gas detectors and ionizing-chambers, data acquisition and saving were realized with the LabVIEW platform. The system was tested with 10 keV X-ray from the SSRF storage ring running 10 mA beams, and the test results verified the validity and integrity of this system.  
        关键词：SSRF;SAXS;DAQ   
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        发布时间：2021-03-12
      • TANG Li1 BO Yun2 DENG Dachao2 REN Yamin1 XU Jun1 YAO Zhongwei1 XIA Chuanqin1 1
        Vol. 32, Issue 2, (2009)
        摘要：A pot experiment was conducted to investigate the possibility for phytoremediation of U-contaminated soils. Ten plants of cruciferae (8 species), malvaceae or compesitae were planted for 55 days in the U-contaminated soils (100 mg·kg-1). The samples were analyzed using an inductively-coupled plasma atomic emission spectrometer (ICP-AES). The results showed that U concentration was the highest in shoots of Chinese mustard (var.Texuanzhacai, 1115 mg·kg-1), the highest U removal from U-contaminated soils to plants occurred in the shoots of Artemisia argyi (1113 μg per pot). For the Chinese mustard (var.Paoqingcai, var.Texuanzhacai), uranium concentration in shoots was higher than in roots, and bioaccumulation factors (BFs) and transfer factors (TFs) were more than one. They showed better suitability for phytoremediation of U than other plants due to their high U accumulation in the aboveground tissues.  
        关键词：Phytoremediation;Hpyperaccumulator;Uranium;Soil   
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        发布时间：2021-03-12
      • CHEN Liang WEI Yixiang
        Vol. 32, Issue 2, (2009)
        摘要：Lanthanum bromide detector is a new kind of scintillation detector appeared recent years. Due to the better energy resolution and detection effective, it is developed rapidly and used widely. This paper calculates and researches the characteristic of γ spectrum of the lanthanum bromide detector. The calculation is based on Geant4, the general purpose Monte Carlo program package, and compared with the experiment data. It demonstrates that the lanthanum bromide detector can be used in portable γ spectrometer. The calculation also provides reliable data under limited experiment for the development of spectral analysis algorithm.  
        关键词：Monte Carlo simulation;Lanthanum bromide detector;Portable radionuclide identification device;γ spectrum analysis   
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        发布时间：2021-03-12
      • DONG Xicun1,2 LI Wenjian1 HE Jingyu1 LIU Qingfang1 YU Lixia1 1
        Vol. 32, Issue 2, (2009)
        摘要：To investigate the influence of carbon ion irradiation on important agronomic characters of sweet sorghum, dry seeds of Sweet Sorghum BJ0601 and BJ0602 were irradiated by 100 MeV/u 12C+6 ion beam to different doses at Heavy Ion Accelerator National Laboratory in Lanzhou (HIANLL). When matured, the main traits of sweet sorghum were measured. The correlation coefficient of five main agronomic characters, i.e. number of node, plant height, stalk diameter, sugar content and stem weight per plant, were analyzed using the SPSS13.0 software. The results indicated that the obvious influence of sweet sorghum irradiated by carbon ion beam was observed. In addition, the correlation of main traits was studied. This study may provide rudimental data to select novel variety of sweet sorghum suited for fuel ethanol production. In addition, the average of sugar content of early mutant BJ0601-1 is higher than BJ0601 in M2, and the sugar content of sweet sorghum may be improved by carbon ion beam irradiation.  
        关键词：Sweet sorghum;Carbon ion beam;Main trait;Correlation coefficient   
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        发布时间：2021-03-12
      • ZHOU Yaoyuan1 ZHANG Rongjun1 CAI Gangming1 GU Xiaobo1 JIANG Mengjun1 ZHANG Bo1 YANG Jianliang2 YANG Min1 CAO Guoxian1 1
        Vol. 32, Issue 2, (2009)
        摘要：125I-albumin-IFN-alpha2b was prepared with the methods of Ch-T and purified with PD-10 column. The radiochemical purity was measured with TCA (trichloroacetic acid) precipitation. The antiviral activities of 125I-albumin-IFN-alpha2b and albumin-IFN-alpha2b were compared with WISH/VSV system in vitro. SD rats were injected with 125I-albumin-IFN-alpha2b subcutaneously and sacrificed at 0.5, 2, 6, 24, 48, 90, 180 and 300 h post-injection. Selected organs were dissected, weighed and their radioactivity was measured using γ-counter. The accumulated radioactivity in the tissues was calculated in terms of percentage of injected dose per gram organ (%ID·g-1). The labeling yield was 82.72%. The radiochemical purity of 125I-albumin-IFN-alpha2b was 95.53%, and its radioactivity was 0.26 MBq/μg. The antiviral bioactivities of albumin-IFN-alpha2b and 125I-albumin- IFN-alpha2b did not change. Biodistribution analysis of 125I-albumin-IFN-alpha2b in rats showed that concentrated 125I- albumin-IFN-alpha2b in blood reached maximum at 6 h post injection, and eliminated slowly. No specific accumulation was seen in other tissues. 125I-albumin-IFN-alpha2b could maintain in peripheral blood for a long time and it meant albumin-IFN-alpha2b would be an effective long-term interferon.  
        关键词：Albumin-IFN-alpha2b;125Iodine;Biodistribution   
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        发布时间：2021-03-12
      • TANG Ganghua1,3 TANG Xiaolan2 WANG Mingfang1 LI Baoyuan1 LIANG Mingquan1 1
        Vol. 32, Issue 2, (2009)
        摘要：For early diagnosis for malignant tumors with the different metabolic imaging agents, a fully automated synthetic technology of 3’-deoxy-3’-[18F]fluorothymidine (18F-FLT) and O-(2-18F-fluoroethyl)-L-tyrosine (18F-FET) was studied in this paper. Automated synthesis of 18F-FLT and 18F-FET was performed by one-pot two-step reaction procedure at TRACERlab FXF-N system. 18F-FLT injection was obtained via two-step reaction including nucleophilic fluorination of 3-N-t-butoxycarbonyl-1-[5’-O-(4,4’-di-methoxytriphenylmethyl)-2’-deoxy-3’-O-(4-nitrobenzenesulfonyl)- β-D-threopentofuranosyl]thymine, the precursor molecule, with 18F-fluoride and subsequent hydrolysis of the pro- tecting group with 1 mol/L HCl at the same reaction vessel, and purification with HPLC system. 18F-FET injection was also prepared via two-step reaction including nucleophilic fluorination of 1,2-di(4-methylphenylsulfonyloxy)ethane as the starting material and following by alkylation of L-tyrosine at the same reaction vessel, and purification with HPLC system. Fully automated synthesis of 18F-FLT and 18F-FET was completed within the total synthesis time of about 50 and 60 min, respectively. The uncorrected radiochemical yields of 18F-FLT and 18F-FET were above 20% and radiochemical purities were more than 95%. The quality control indexes of 18F-FLT and 18F-FET injection meet the requirements of radiopharmaceuticals quality.  
        关键词：18F-FLT;18F-FET;Tumor imaging agent;Automated synthesis;Quality control   
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        发布时间：2021-03-12
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