The ATHENA experiment for the study of antihydrogen
The ATHENA experiment for the study of antihydrogen
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研究反氢的雅典娜实验
DOI：
10.1142/s0217751x1430035x
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发表时间：
2014
影响因子：
1.6
通讯作者：
N. Zurlo
中科院分区：
文献类型：
--
作者：
C. Amsler;G. Bonomi;A. Fontana;A. Kellerbauer;V. Lagomarsino;E. Rizzini;A. Rotondi;G. Testera;L. Venturelli;N. Zurlo
2002年，雅典娜实验首次在欧洲核子研究中心反质子减速器（AD）上产生大量反氢原子。在这篇综述文章中，我们收集并讨论了实验的所有相关结果：反质子和正电子冷却及其在嵌套潘宁陷阱中的复合动力学、用于明确识别反原子以及质子背景的方法、反氢形成对混合时间和温度的依赖性。考虑到复杂的嵌套陷阱动力学，还尝试根据二体和三体形成反应来解释结果。讨论了 ATHENA 结果与未来实验的相关性，并简要概述了 AD 当前的反物质物理学。
In 2002, the ATHENA experiment was the first to produce large amounts of antihydrogen atoms at the CERN Antiproton Decelerator (AD). In this review article, we collect and discuss all the relevant results of the experiment: antiproton and positron cooling and their recombination dynamics in the nested Penning trap, the methods used to unambiguously identify the antiatoms as well as the protonium background, the dependence of the antihydrogen formation on mixing time and temperature. An attempt to interpret the results in terms of the two-body and three-body formation reactions, taking into account the complicated nested-trap dynamics, is also made. The relevance of the ATHENA results on future experiments is discussed, together with a short overview of the current antimatter physics at the AD.