Carrier-free measurements of natural 10Be/9Be ratios at low energies
Carrier-free measurements of natural 10Be/9Be ratios at low energies
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低能量下天然 10Be/9Be 比率的无载流子测量
DOI：
10.1016/j.nimb.2009.10.015
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发表时间：
2010
影响因子：
1.3
通讯作者：
H. Synal
中科院分区：
文献类型：
--
作者：
M. Christl;C. Maden;P. Kubik;A. Müller;S. Ivy‐Ochs;M. Suter;H. Synal
苏黎世联邦理工学院开发了一种新方法，可以直接测量样品的自然{sup 10}Be/{sup 9}Be比率，使用紧凑的（0.6 MV） AMS系统Tandy，这使我们能够使用标准的样品制备方法和AMS技术。我们的研究结果表明，对于只需要{sup 10}Be/{sup 9}Be比率的相对变化的应用，使用紧凑型AMS机器进行无载波测量代表了一种快速，更便宜和更精确的选择。已发现（人工）低载流子样品的源效率提高。如果这种效应可以用于自然样品，它将为其他应用开辟领域，例如使用紧凑，低能量的AMS系统对石英进行原位测定。
At ETH Zurich a new method to measure directly the natural {sup 10}Be/{sup 9}Be ratio of a sample with the compact (0.6 MV) AMS system Tandy has been developed, which allows us to use standard sample preparation methods and AMS techniques. Our results show that carrier-free measurements with compact AMS machines represent a fast, less expensive and more precise alternative for applications where only the relative variation of the {sup 10}Be/{sup 9}Be ratio is needed. Increased source efficiency for (artificial) low carrier samples has been found. If this effect could be exploited for natural samples, it would open the field for other applications like in situ {sup 10}Be-dating of quartz with compact, low energy AMS systems.