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      • Huhou Li
        Vol. 11, Issue 11, (1988)
        摘要：A review on the thermoluminescence dating is presented. It involves seven parts:1. properties of TL in the phosphorus; 2. centers of luminescence in some crystals; 3. radiation dosimetry, five methods for annual dose determination and two methods for radon escape determination are discussed; 4. the accumulated dose in different kinds of specimen; 5. preparation of samples for TL determination; 6. calibration of radiation sources in TL dating; 7. equipments of TL determination.  
        关键词：thermoluminescence dating   
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        发布时间：2022-08-16
      • Huhou Li
        Vol. 11, Issue 11, (1988)
        摘要：The naturally deposited carbonate samples from Zhangjiagou profile of Songpan County, Sichuan Province were studied with TL and ESR characteristics. The calcite as a dating object was verified by X-ray diffraction. The contents of trace elements in the calcite were determined by neutron activation analysis. The ages of several specimens were calculated and the results given by two methods were compared. The experimental results and the prospect are discussed in the paper.  
        关键词：thermoluminescence dating;electron spin resonance dating;deposited carbonate   
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        发布时间：2022-08-16
      • Zicheng Peng
        Vol. 11, Issue 11, (1988)
        摘要：The estimation of annual dose for TL and ESR is a complex question. Four kinds of annual dose models, i.e. the close-equilibrium model, the 222Rn loss model, the close-disequilibrium model and the linear uranium accumulation model have been introduced and discussed.  
        关键词：Annual dose;calculation models   
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        发布时间：2022-08-16
      • Desheng Li,Xingtian Zhao,Biming Yang
        Vol. 11, Issue 11, (1988)
        摘要：The experimental results of light bleaching of pottery samples in thermoluminescence measurements under various exposure conditions with red, yellow, incandescent and fluorescent lamps were given. The relationships of bleaching with radiative intensity and spectrum distribution were discussed in the paper.  
        关键词：thermoluminescence bleaching;radiative intensity;spectrum distribution   
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        发布时间：2022-08-16
      • Shenghua Li
        Vol. 11, Issue 11, (1988)
        摘要：OSL (optical stimulated luminescence) is a new method in dating. A preliminary study of K-feldspar in OSL dating is reported.  
        关键词：OSL dating;K-feldspar   
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        发布时间：2022-08-16
      • Weida Wang,Zhixin Zhou
        Vol. 11, Issue 11, (1988)
        摘要：A method of undosed TL dating was described in this paper. In this project, the total TL and annual TL were determined using the natural minerals in the archaeological samples and the artificial TL material respectively, and the age was estimated directly by the TL. This method had been used to date 28 archaeological samples. The results showed that these ages were in agreement with the dosed TL ages, also, the method had the advantages of decreasing the errors and eliminating the calibrations of radioactive sources.  
        关键词：TL dating;undosed method   
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        发布时间：2022-08-16
      • Gongwang Zheng
        Vol. 11, Issue 11, (1988)
        摘要：This paper involves some principal steps in the dating of calcite, including sample preparation, instrument description and data processing. Using a computer will be a great help to improve measurement precision.  
        关键词：TL glow curve;regression analysis;least-squares procedure   
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        发布时间：2022-08-16
      • Yuxiong Tang,Desen Li,Guihua Li
        Vol. 11, Issue 11, (1988)
        摘要：The TL ages of 4 fluvial deposit samples have been determined and the light bleaching is used in zeroing.  
        关键词：TL dating;light bleaching   
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        发布时间：2022-08-16
      • Xiaoxian Peng
        Vol. 11, Issue 11, (1988)
        摘要：The ages of abyssal deposits have been studied by TL dating. The ages of the deposits from the wells Weima 1,5 and 6 at the slope in the north of the South China Sea are 36, 100 and 128 thousand years respectively.  
        关键词：abyssal deposit;TL dating   
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        发布时间：2022-08-16
      • Fengjie Ji,Gui Peng
        Vol. 11, Issue 11, (1988)
        摘要：Based on the dating results by TL and 14C techniques with different specimens for the same geological body, a comparison and analysis have been carried out preliminarily. It seems that the different clocking beginnings for different specimens may be one of the main reasons which makes some data be out of accord, therefore a scientific basis for obtaining correct dating information and applying these data reasonably is provided.  
        关键词：dating;clocking beginning   
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        发布时间：2022-08-16
      • Mingda Liu,Xianliang Meng
        Vol. 11, Issue 11, (1988)
        摘要：The effectiveness of TL dating of fault gouge is instanced in the measurement of samples taken from Huoshan Fault, Shanxi Province.  
        关键词：TL dating;Fault gouge   
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        发布时间：2022-08-16
      • Zhiliang Zhang
        Vol. 11, Issue 11, (1988)
        摘要：Some rules were described which must be obeyed in collecting quaternary samples in order to obtain a precise TL dating.  
        关键词：TL dating;Sampling   
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        发布时间：2022-08-16
      • Junding Xia
        Vol. 11, Issue 11, (1988)
        摘要：A thermoluminescence dating apparatus has been described in this paper. It has many advantages, such as high sensitivity, low background and good stability. The automatic data acquiring and processing system, controlled by a microcomputer, leads to get accurate results.  
        关键词：thermoluminescence dating apparatus;microcomputer;automatic data acquiring and processing   
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        发布时间：2022-08-16
      • Peihua Huang
        Vol. 11, Issue 11, (1988)
        摘要：A survey of the international conferences on ESR dating held in the last two years vas made and recent advances in the research were described.  
        关键词：ESR;dating of geological and archaeological materials   
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        发布时间：2022-08-16
      • Sizhao Jin,Renyou Liang,Zicheng Peng,Peihua Huang
        Vol. 11, Issue 11, (1988)
        摘要：In order to determine the mean-life of E' centre of quartz grains in Luochuan Loess, isothermally annealing experiments have been carried out. Samples are heated several times with different duration at the same temperature. Then the experiments are repeated at different temperatures. The result shows that the mean-life of E′ centre of the quartz sample at ambient temperature (20℃)τ=6.66×108a, the activation energy E=1.35eV, and the frequency factor υ0=3.67×108.  
        关键词：ESR chronology;isothermally annealing;mean-life;Activation energy   
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        发布时间：2022-08-16
      • Renyou Liang,Sizhao Jin,Zicheng Peng,Peihua Huang
        Vol. 11, Issue 11, (1988)
        摘要：The history, recent developments and superiority of ESR dating are described in this paper. The principle of ESR dating and the operative process are demonstrated by determing the age of a stalagmite from Choukoutien cave (6×104a). Finally, some problems related with ESR dating are also discussed.  
        关键词：ESR dating;accumulative dose;Annual dose   
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        发布时间：2022-08-16
      • Yijian Chen,Jingfen Lu,Rungen He,Zhonglun Zhang
        Vol. 11, Issue 11, (1988)
        摘要：11 gypsum samples of playa deposits from two bore holes in the central Australia have been dated by means of ESR technique. The results obtained indicate that the signal at g=2.0090 is suitable for AD evaluation. The error of AD value, in this case, is about 10—40%. The ability of ESR technique to determine approximate age of gypsum deposits is demonstrated by this study.  
        关键词：playa deposits;Gypsum;ESR dating   
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        发布时间：2022-08-16
      • Yijian Chen
        Vol. 11, Issue 11, (1988)
        摘要：ESR dating reveals the ability to determine the ages of Quaternary samples during the last decade. However several questions still remain before it becomes a routine method. Apart from the questions dealing with the choice of ESR signals for evaluation of AD values and the precise determination of the annual dose, the international standards and procedures greatly need to be established.  
        关键词：ESR age;Quaternary chronology   
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        发布时间：2022-08-16
      • Lishu Chen
        Vol. 11, Issue 11, (1988)
        摘要：Recently the TL and ESR techniques have become very useful dating methods. The accuracy of dating depends on that of measured values for the absorbed dose in an archaeological sample and for the annual average dose. Some important factors in term of radiation dosimetry are discussed. The ratio of average dose to surface dose for a 90Sr-90Y source irradiating quartz as a function of grain size is calculated. Variations of individual contribution of 90Sr and 90Y to the total dose with depth are also shown.  
        关键词：TL dating;ESR dating;beta dosimetry   
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        发布时间：2022-08-16
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