The Electron Capture in $^{163}$Ho experiment - ECHo
The Electron Capture in $^{163}$Ho experiment - ECHo
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$^{163}$Ho 实验中的电子捕获 - ECHo
DOI：
10.22323/1.398.0211
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
M. Wegner
中科院分区：
文献类型：
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作者：
K. Blaum;A. Doerr;Ch. E. Duellmann;K. Eberhardt;S. Eliseev;C. Enss;A. Faessler;A. Fleischmann;L. Gastaldo;S. Kempf;M. Krivoruchenko;Susanta Lahiri;M. Maiti;Y. Novikov;P. Ranitzsch;F. Šimkovic;Z. Szusc;M. Wegner
中微子质量绝对尺度的确定是粒子物理学中最具挑战性的问题之一。采用不同的方法来实现对亚电子伏特范围内中微子质量的灵敏度。其中，探索合适核素的β衰变和电子俘获过程的实验可以提供电子中微子质量值的必要信息。在这次演讲中，我们提出了电子捕获163-Ho实验ECHo，其目的是通过分析163-Ho的电子捕获过程后的量热测量能谱来研究亚eV范围内的电子中微子质量。利用低温磁量能器阵列将测量高精度、高统计量的光谱。我们目前的初步结果获得的第一个原型的单通道探测器以及参与团体和他们正在进行的发展。
The determination of the absolute scale of the neutrino masses is one of the most challenging questions in particle physics. Different approaches are followed to achieve a sensitivity on neutrino masses in the sub-eV range. Among them, experiments exploring the beta decay and electron capture processes of suitable nuclides can provide necessary information on the electron neutrino mass value. In this talk we present the Electron Capture 163-Ho experiment ECHo, which aims to investigate the electron neutrino mass in the sub-eV range by means of the analysis of the calorimetrically measured energy spectrum following the electron capture process of 163-Ho. A high precision and high statistics spectrum will be measured by means of low temperature magnetic calorimeter arrays. We present preliminary results obtained with a first prototype of single channel detectors as well as the participating groups and their on-going developments.