Study of Ocean Bottom Detector for observation of geo-neutrino from the mantle
Study of Ocean Bottom Detector for observation of geo-neutrino from the mantle
复制标题
地幔地中微子观测海底探测器研究
DOI：
10.1088/1742-6596/2156/1/012144
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
Uek, K.
中科院分区：
文献类型：
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作者：
Sakai, T.;Inoue, K.;Watanabejg, H.;McDonough, W.F.;Abe, N.;Araki, E.;Kasaya, T.;Kyo, M.;Sakurai, N.;Uek, K.
对地球内部放射性同位素发射的反中微子（地源中微子）的观测带来了关于地球化学成分及其热平衡的直接信息，这与地球动力学密切相关。迄今为止，两个实验（KamLAND和Borexino）已经测量了地球中微子，并限制了地球化学成分的可接受模型的范围，但通过陆基探测器区分地幔通量是具有挑战性的，因为地壳信号约占总反中微子通量的70%。由于海洋地壳比大陆地壳更薄，放射性元素的浓度更低，海洋中的地球中微子探测器，海底探测器（OBD），使其对源自地幔的地球中微子敏感。我们的工作组是由日本的粒子物理、地球科学和海洋工程等跨学科团体共同组建的。我们已经开始了OBD的技术开发工作。我们现在正在开发一个20公斤的液体闪烁体探测器原型。该探测器将于2022年在1公里深的海底进行操作部署测试。
Observation of anti-neutrinos emitted from radioactive isotopes inside Earth (geo-neutrinos) brings direct information on the Earth's chemical composition and its heat balance, which strongly relate to the Earth's dynamics. To date, two experiments (KamLAND and Borexino) have measured geo-neutrinos and constrained the range of acceptable models for the Earth's chemical composition, but distinguishing the mantle flux by land-based detectors is challenging as the crust signal is about 70% of the total anti-neutrino flux. Given the oceanic crust is thinner and has lower concentration of radioactive elements than continental crust, geo-neutrino detector in the ocean, Ocean Bottom Detector (OBD), makes it sensitive to geo-neutrinos originating from the Earth's mantle. Our working group was jointly constructed from interdisciplinary communities in Japan which include particle physics, geoscience, and ocean engineering. We have started to work on technological developments of OBD. We are now developing a 20 kg prototype liquid scintillator detector. This detector will undergo operation deployment tests at 1 km depth seafloor in 2022.
Hanohano：用于独特中微子物理和地球物理研究的深海反中微子探测器
DOI：
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发表时间：
2008
期刊：
影响因子：
--
作者：
J. Learned;S. Dye;S. Pakvasa
通讯作者：
S. Pakvasa