摘要
本文以水成沉积物为研究对象,在实验室常用辐照剂量率1×10–1–1×102 Gy/min范围内,选择不同的剂量率对同种样品进行辐照,观察不同剂量率辐照下Al心ESR信号的剂量响应曲线特征。实验结果表明,不同人工辐照剂量率对水成沉积物样品的剂量响应特征没有影响,现有的人工辐照技术能够满足我们的实验要求。
ESR dating samples need be irradiated to obtain dose response curve and the equivalent dose. The artificial dose rate is about 1 × 10-1-1 × 10^2 Gy/min, whereas the natural dose rate is about 3 Gy/ka. Therefore, one must be sure whether the much higher artificial dose rate is suitable for the ESR dating study. In this paper, we use different artificial dose rate to irradiate the same fluvial sample and measure the quartz A1 centre ESR signal under the same conditions. The dose response curves are compared, in an attempt to gain a preliminary knowledge on that problem and build a good foundation for our ESR dating studies on fluvial samples.
出处
《核技术》
CAS
CSCD
北大核心
2011年第2期95-98,共4页
Nuclear Techniques
基金
地震动力学国家重点实验室自主研究课题(LE-09-04)
国家自然科学基金(40902051)
中央级公益性科研院所基本科研业务费专项(DF-IGCEA-0608-2-17)共同资助
关键词
人工辐照
剂量率
沉积物
ESR
石英
Artificial irradiation, Dose rate, Sediment, ESR, Quartz
