Isochron measurements of naturally irradiated K-feldspar grains
文献类型：期刊论文
| 作者 | Li, Bo1; Li, Sheng-Hua1; Wintle, Ann G.2; Zhao, Hui3 |
| 刊名 | RADIATION MEASUREMENTS
 |
| 出版日期 | 2007-09-01 |
| 卷号 | 42期号:8页码:1315-1327 |
| 关键词 | K-feldspars infrared stimulated luminescence anomalous fading isochron |
| ISSN号 | 1350-4487 |
| DOI | 10.1016/j.radmeas.2007.09.008 |
| 通讯作者 | Li, Sheng-Hua(shli@hku.hk) |
| 英文摘要 | The equivalent doses of K-feldspar grains in a range of grain sizes from 90 to 250 mu m diameter were measured using a single-aliquot regenerative-close protocol for the infrared stimulated luminescence (IRSL) signals for two samples of desert sand. The equivalent doses for each sample were compared with that for the 125-150 mu m grains of quartz from the same samples. The results suggested that the K-feldspar equivalent doses were underestimated because of anomalous fading. Measurements of the decay of the IRSL signals following laboratory irradiation for these two samples, and an additional one from a previously published isochron study, showed anomalous fading during the period of laboratory storage. The decay rate was about 3% per decade for all samples and was independent of the grain size used. Using plots of equivalent doses for K-feldspars as a function of their calculated internal dose rate, and the quartz equivalent dose as a function of grain size, it was concluded that the IRSL signal derived from the internal dose rate had not faded over the 13,000 years that had elapsed since the grains were deposited. (c) 2007 Elsevier Ltd. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | INFRARED-STIMULATED LUMINESCENCE ; BETA-DOSE ATTENUATION ; DUNE SANDS ; QUARTZ ; POTASSIUM ; SPECTRA ; CHINA ; IRSL ; DESERTS ; SIGNALS |
| WOS研究方向 | Nuclear Science & Technology |
| WOS类目 | Nuclear Science & Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000251921900008 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555921 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Li, Sheng-Hua |
| 作者单位 | 1.Univ Hong Kong, Dept Earth Sci, Hong Kong, Hong Kong, Peoples R China 2.Univ Wales, Inst Geog & Earth Sci, Aberystwyth SY23 3DB, Dyfed, Wales 3.Chinese Acad Sci, Key Lab Desert & Desertificat, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Bo,Li, Sheng-Hua,Wintle, Ann G.,et al. Isochron measurements of naturally irradiated K-feldspar grains[J]. RADIATION MEASUREMENTS,2007,42(8):1315-1327. |
| APA | Li, Bo,Li, Sheng-Hua,Wintle, Ann G.,&Zhao, Hui.(2007).Isochron measurements of naturally irradiated K-feldspar grains.RADIATION MEASUREMENTS,42(8),1315-1327. |
| MLA | Li, Bo,et al."Isochron measurements of naturally irradiated K-feldspar grains".RADIATION MEASUREMENTS 42.8(2007):1315-1327. |
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来源：寒区旱区环境与工程研究所
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