99Tc measurements with accelerator mass spectrometry at CIAE

99Tc measurements with accelerator mass spectrometry at CIAE
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CIAE 的 99Tc 加速器质谱测量

DOI:
10.1016/j.nimb.2010.03.017
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发表时间:
2007-06
影响因子:
1.3
通讯作者:
--
中科院分区:
物理与天体物理4区
文献类型:
--
作者:

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U是一种长寿放射性同位素,主要由热中子俘获产生,在地质研究和核保障方面具有潜在的应用前景。加速器质谱仪是目前测量{sup 236}U最灵敏的技术,并发展了一种测量长寿命重离子{sup 236}U的方法。该装置使用专用的注入器和新提出的{sup 208}Pb{sup 16}O{sub2}{sup-}分子离子来模拟{sup 236}U离子的输运。在本工作中,同位素比{sup 236}U/{sup 238}U的灵敏度小于10。
{sup 236}U is a long-lived radioactive isotope which is produced principally by thermal neutron capture on {sup 235}U. {sup 236}U may be potentially applied in geological research and nuclear safeguards. Accelerator mass spectrometry is presently the most sensitive technique for the measurement of {sup 236}U and a measurement method for long-lived heavy ion {sup 236}U has been developed. The set-up uses a dedicated injector and the newly proposed {sup 208}Pb{sup 16}O{sub 2}{sup -} molecular ions for the simulation of {sup 236}U ion transport. A sensitivity of lower than 10{sup -10} has been achieved for the isotopic ratio {sup 236}U/{sup 238}U in present work.
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