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EFFECTOFTHERATIOTh/UONTLDATINGACCURACY¥P.L.Leung(梁宝鎏);MichaelJ.Stokes(DepartmentofPhysicsandMaterialsScience,CityPolytechnico... 相似文献
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A rapid and effective TL technique to authenticate ancient Chinese pottery is proposed in the paper.Twenty three samples,ranging in age from 200to 9000a,including multiple styles and shapes and drawn from diverse and remote areas in China have been used to establish the typical annual dose as 5.5mGy/a and its associated deviation.Ten unauthenticated samples are then appraised using the technique which,in nearly all cases,leads to satisfactory results. 相似文献
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在用前剂量法作古陶瓷真伪鉴定的过程中,需要对样本加入多次不同量值的剂量再进行激活及熄灭效应的测试,从而加大了测量误差值(通常都达20%-30%)。为了提高鉴定度,本文采用以固定剂量的熄灭效应作为参考值,以数学式子表面过程中发光强度的变化,并用几个测试序列作对比,找出比较理想的测试顺序,测量结果误差接近10%,远比原来方法优越,结论是此方法是可行的,但仍需作更多的实际测量工作来肯定。 相似文献
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古代瓷器热释光测定年代研究 总被引:12,自引:7,他引:5
叙述了热释光断代中采用前剂量技术测定瓷器的年代,着重研究了瓷片深度剂量的变化,110℃TL峰的热激活特性、古剂量的测定和年剂量的估算。结果表明,这项技术能用于古代瓷器的真伪鉴定,但准确度和精度不及陶器。另外,前剂量技术中一些复杂因素,也是导致年代测定误差大的可能原因。 相似文献
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Study on fine quartz pre-dose techniques 总被引:1,自引:0,他引:1
When using the pre-dose technique in ceramic dating,it is essential to add a calibration dose and to eliminate the background dose.For doing this measurement the sample requires multiple activation following multiple administration of a test dose to induce simulated “ancient” thermoluminescence(TL).However,the procedures introduce many factors that are difficultly corrected.This paper compares existing two kinds of measurement procedures and proposes a new procedure involving single activation following a single test dose administration.AN experiment using the single activation procedure is carried out with natural fine quartz where the results obtained exhibit only 0.07 relative error.It appears that this new procedure increases the precision of the ancient TL measurement by about 0.04 and 0.11 over those of existing two kinds of procedures.In addition this method can give realistic values in TL dating for relatively “young” samples aged tens to hundreds of yesrs where the standard high temperature TL method is relatively insensitive. 相似文献