最新刊期
      卷 0 ， 期 0 ， 2020
      • Issue 8, (1997)
        摘要：全国第五次释光与电子自旋共振测定年代学术讨论会论文选编前言由上海博物馆与国家地质矿产部海洋地质研究所联合主办的全国第五次释光（Ｌｕｍｉ－ｎｅｓｃｅｎｃｅ）与电子自旋共振（ＥＳＲ）测定年代学术讨论会于１９９６年１１月１７－２１日在青岛市召开。来自大陆、...  
          
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        发布时间：2021-04-09
      • Wang Weida Zhou Zhixin Xia Junding
        Issue 8, (1997)
        摘要：It is important in fine-grain TL dating that the full α dose must be converted into the equivalent β dose. Although the conversion coefficient K for internal radiation efficiency can not be measured directly for each sample, it is possible to measure the external radiation efficiency K 3.7 . For this purpose a special study for the conversion factor of K to K 3.7 has been made using ultrathin TLD. The results show that the conversion factor of the TLD for archaeological samples is 0.847, which is in agreement with the calculated value 0.85.  
        关键词：TL dating;Alpha efficiency;Internal radiation;External radiation;Conversion factor   
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        发布时间：2021-04-09
      • Li Huhou
        Issue 8, (1997)
        摘要：The Ni-ions are implanted into the lattice structure of a quartz, and its TL response to irradiation is measured.  
        关键词：Thermoluminescence;Ion implantation;Ni-quartz   
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        发布时间：2021-04-09
      • Leung P L Stokes M J
        Issue 8, (1997)
        摘要：The age determination of ancient porcelain using the pre-dose technique in TL dating was reported. The variation of beta dose with depth below the surface of the porcelain slice, the thermal activation characteristic（TAC） for 110℃ peak, the measurement of paleodose and the estimation of annual dose were studied. The results show that this technique is suitable for authenticity testing of ancient porcelain, but both accuracy and precision for porcelain dating are worse than those for pottery, because porcelain differs from pottery on composition, structure and firing temperature. Besides, some complicated factors in the pre-dose technique would be the possible cause of the greater errors.  
        关键词：TL dating;Porcelain;Pre-dose technique   
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        发布时间：2021-04-09
      • Leung P L Stokes M J
        Issue 8, (1997)
        摘要：The thermal activation characteristics of porcelain slice samples for pre-dose dating were obtained by using the multiple activation method. The influence of activation temperature on TL dating was also studied. The results show that choosing a temperature corresponding to the maximum sensitivity on the TAC curve as the activation temperature is very important in the multiple activation method.  
        关键词：TL dating;Porcelain;Thermal activation characteristics   
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        发布时间：2021-04-09
      • Yin Gongming Lu Yanchou Chen Jie Liu Aiguo Hu Biru
        Issue 8, (1997)
        摘要：Twenty seven samples were collected with different sediment features and grain sizes. Their IRSL intensities were measured and the equivalent dose D E extrapolated. The experiments show that all samples with fine grain size usually present a very low natural IRSL intensity due to a complete bleaching while the coarse ones have a considerable residual IRSL level.  
        关键词：IRSL dating;Modern sediment samples   
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        发布时间：2021-04-09
      • Zhou Zhixin
        Issue 8, (1997)
        摘要：The transmission of strength S of alpha sources using ultrathin TLD is described in this paper.  
        关键词：Alpha source strength;S value;Transmisssion   
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        发布时间：2021-04-09
      • Chen Tiemei Chen Qi Bao Wenbo Wu En
        Issue 8, (1997)
        摘要：The isothermal annealing experiments on synthetic hydroxyapatite and fossil tooth enamel samples show that the decay of its g=2.0018 line obeys the mixed first- and second-order annealing kinetics. The 2nd-order decay constant depends strongly on temperature and is roughly estimated to be about 10 -19 g/s for hydroxyapatite at 280℃. The effect of the 2nd-order annealing kinetics on ESR dating of ancient （early Pleistocene） fossil tooth enamel samples should be further studied.  
        关键词：ESR dating;Hydroxyapatite;Second-order decay kinetics   
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        发布时间：2021-04-09
      • Ye Yuguang Diao Shaobo He Jie
        Issue 8, (1997)
        摘要：The ages of 18 samples taken from cores ZQ 2 and ZQ 4 in Zhujiangkou Basin of the South China Sea were determined by using ESR dating technique for Ge centres of quartz in sediments. The coincidence of ESR ages with those measured by other methods shows the reliableness of the ESR dating.  
        关键词：Quartz;ESR dating;South China Sea   
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        发布时间：2021-04-09
      • Xia Junding Wang Weida Xiong Yingfei
        Issue 8, (1997)
        摘要：The ages of bricks and tiles on Mao Pagoda, located in Qingpu County, the western suburbs of Shanghai, were determined by using fine-grain technique in TL dating. The time of construction, renovation and reparation of Mao Pagoda were inferred.  
        关键词：TL dating;Pagoda   
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        发布时间：2021-04-09
      • Zhang Jingzhao Lai Zhongping
        Issue 8, (1997)
        摘要：A kind of red LEDs with a wavelength of 655nm provides light illumination of loess samples while pretreating the samples with minimal effect on the latent IRSL. The IRSL signal is decreased to two percent after 20 minutes bleaching by sun light. It implies that the residual signals may be neglected even when dating very young loess samples, and that IRSL dating has significant potential in dating very poorly-bleached sediments. The recuperation of IRSL in loess is negligible, so the measurable age limit for IRSL is much lower than that for GLSL.  
        关键词：Red LED;OSL dating;Residual;IRSL;Recuperation   
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        发布时间：2021-04-09
      • Leung P L Stokes M J
        Issue 8, (1997)
        摘要：The pre-dose dating using fine polymineral grains is reported for the first time. Distinct advantages of the method are using the single-activation technique and eliminating the test of thermal activation characteristic（TAC）, therefore the change of TAC due to heating can be avoided. This method has been used to judge the authenticity of ancient pottery. It is shows that the technique is particularly suitable for the samples which are very young or with poor TL characteristic at the range of high temperature.  
          
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        发布时间：2021-04-09
      • Ji Fengju Ran Yongkang Li Jianping
        Issue 8, (1997)
        摘要：Based on the TL dating for a set of samples in Dongliuhetun Trench, the correlation between the sequence of TL ages and stratigraphic succession has been analysed. And the paleoearthquake events are divided according to the sequence of TL ages.  
        关键词：TL ages;Stratigraphic succession;Paleoearthquake events   
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        发布时间：2021-04-09
      • Chen Yongheng
        Issue 8, (1997)
        摘要：A set of data collected recent years for the natural thermoluminescence（NTL） and cosmogenic nuclide of a group of ordinary chondrites with terrestrial ages<30 years has been examined in order to see if there is evidence for changes in radiation and thermal history which correlate with cosmic ray exposure age. It was found that the meteorites with long cosmic ray exposure ages had smaller perihelia, probably because of a similar evolution of their orbits. The results suggest that the meteoroid orbits of ordinary chondrites evolved from perihelion of 1.0 AU to 0.9 AU over the last 50 million years. The meteoroid bodies experiencing solar reheating during exposure have slightly lower natural TL levels than the normal ones, while the reheating events before exposure affect natural TL levels more obviously.  
        关键词：Ordinary chondrites;Natural TL;Cosmic ray exposure age;Orbital perihelion   
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        发布时间：2021-04-09
      • Zheng Gongwang Zhou Wencang
        Issue 8, (1997)
        摘要：Thirteen sandy soil specimens were collected from the earth’s surface along an exploring line across the target area. Three different ways （called A, B and C for short） were chosen to get the TL data of every specimen for anlysis. Our comparative study confirms that the way A （using the original mixed sandy soil sample） appears most desirable, the way B （using fine-grain sample only） comes second, whereas the way C （inserting some LiF slices in every collected specimen at 25mm deep for 175 days before measuring TL signals from the slices） dose not seem successful. A brief discussion is given.  
        关键词：TL;Oil/gas reservoir   
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        发布时间：2021-04-09
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