| 光释光测年：黄土样品IRSL信号的晒退实验 |
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| 引用本文： | 张景昭 赖忠平. 光释光测年：黄土样品IRSL信号的晒退实验[J]. 核技术, 1997, 20(8): 485-488 |
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| 作者姓名： | 张景昭 赖忠平 |
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| 作者单位： | 中国科学院黄土与第四纪地质国家重点实验室 |
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| 摘 要： |
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| 关 键 词： | 光释光 测年 残留值 红外释光 回授 黄土 |
Optical dating: bleaching experiment on IRSL signals from loess samples |
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| Zhang Jingzhao Lai Zhongping. Optical dating: bleaching experiment on IRSL signals from loess samples[J]. Nuclear Techniques, 1997, 20(8): 485-488 |
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| Authors: | Zhang Jingzhao Lai Zhongping |
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| Abstract: | 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. |
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| Keywords: | Red LED OSL dating Residual IRSL Recuperation |
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