LUX 实验中钛样品的放射性测量
仪器与探测器
2012-02-14 v3 高能物理 - 实验
摘要
我们报告了对钛金属样品进行的放射性纯度筛查。本工作中描述的筛查过程促成了大型地下氙（LUX）暗物质实验中低温恒温器建造材料的选择。我们的测量结果表明，钛是寻找稀有事件的低背景实验中非常理想的材料。长寿命总放射性最低的样品经测量含有 <0.25 mBq/kg 的 U-238，<0.2 mBq/kg 的 Th-232，以及 <1.2 mBq/kg 的 K-40。对多个样品的测量还表明存在短寿命（半衰期 84 天）的 Sc-46，这可能是由 子引发的 (n,p) 反应通过宇宙射线生成的。
引用
@article{arxiv.1112.1376,
title = {Radio-assay of Titanium samples for the LUX Experiment},
author = {D. S. Akerib and X. Bai and S. Bedikian and E. Bernard and A. Bernstein and A. Bradley and S. B. Cahn and M. C. Carmona-Benitez and D. Carr and J. J. Chapman and Y-D. Chan and K. Clark and T. Classen and T. Coffey and S. Dazeley and L. deViveiros and M. Dragowsky and E. Druszkiewicz and C. H. Faham and S. Fiorucci and R. J. Gaitskell and K. R. Gibson and C. Hall and M. Hanhardt and B. Holbrook and M. Ihm and R. G. Jacobsen and L. Kastens and K. Kazkaz and R. Lander and N. Larsen and C. Lee and D. Leonard and K. Lesko and A. Lyashenko and D. C. Malling and R. Mannino and D. McKinsey and D. Mei and J. Mock and M. Morii and H. Nelson and J. A. Nikkel and M. Pangilinan and P. D. Parker and P. Phelps and T. Shutt and W. Skulski and P. Sorensen and J. Spaans and T. Stiegler and R. Svoboda and A. Smith and M. Sweany and M. Szydagis and J. Thomson and M. Tripathi and J. R. Verbus and N. Walsh and R. Webb and J. T. White and M. Wlasenko and F. L. H. Wolfs and M. Woods and S. Uvarov and C. Zhang},
journal= {arXiv preprint arXiv:1112.1376},
year = {2012}
}
备注
The LUX Collaboration