| Daybreak厚源α-计数仪的标定及测量影响因素的初步研究 |
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| 引用本文： | 王同利,陈杰,杨传成.Daybreak厚源α-计数仪的标定及测量影响因素的初步研究[J].地震地质,2005,27(4):633-644. |
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| 作者姓名： | 王同利 陈杰 杨传成 |
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| 作者单位： | 中国地震局地质研究所,地震动力学国家重点实验室,北京,100029 |
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| 基金项目： | 地震科学联合基金;国家发展和改革委员会资助项目 |
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| 摘 要： | 年剂量测量是释光和电子自旋共振测年的关键之一。厚源α-计数仪(简称TSAC)是年剂量测量中的常用仪器。通过不同标准源的标定对比实验,对美国Daybreak公司582,583型低本底厚源α-计数仪的高压值(HV)和积分甄别器阈值(DISC)进行了标定。同时,对测量过程中的诸多影响因素如被测样品的氡逃逸、粒度、含水量、颜色以及ZnS闪烁屏的密度、测量时间等开展了初步的实验研究,并根据实验结果提出了针对本型号仪器在实际测量时的改进措施,以提高厚源α-计数仪的测量精度
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| 关 键 词： | 释光测年 年剂量 厚源α-计数仪 标定 氡逃逸 |
| 文章编号： | 0253-4967（2005）04-0633-12 |
| 收稿时间： | 2005-11-08 |
| 修稿时间： | 2005-12-12 |
CALIBRATION OF DAYBREAK THICK SOURCE ALPHA COUN- TER AND PRELIMINARY STUDY OF INFLUENCING FACTORS |
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| WANG Tong-li,CHEN Jie,YANG Chuan-cheng.CALIBRATION OF DAYBREAK THICK SOURCE ALPHA COUN- TER AND PRELIMINARY STUDY OF INFLUENCING FACTORS[J].Seismology and Geology,2005,27(4):633-644. |
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| Authors: | WANG Tong-li CHEN Jie YANG Chuan-cheng |
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| Institution: | State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beifing 100029, China |
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| Abstract: | It is very important to determine annual radiation dose in luminescence dating and electron spin resonance dating. The aim of this paper is to calibrate low background Daybreak 582 and 583 thick source alpha counter (TSAC) which is used extensively in OSL dating lab by comparison of different standard sources. Meanwhile we analyze the factors such as efficiency of ZnS scintillator, measurement time, and the loss of radon, grain size, moisture, colour of sample on alpha counting, and provide some suggestions for improvement of accuracy. |
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| Keywords: | luminescence dating annual dose thick source alpha counting calibration loss of radon |
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