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The Hawaii Anti-Neutrino Observatory (Hanohano) is a deep ocean project to detect natural neutrinos throughout the Earth and its core. Natural neutrinos (anti-electron neutrinos) arise from the decay of radioactive isotopes of Uranium, Thorium, and Potassium in the crust and mantle (geo-neutrinos). This radioactivity is believed to supply most of the earth’s internal heat, driving plate tectonics, seafloor spreading, and volcanic activity. The spectrum of neutrinos from the decay chains of Uranium and Thorium extends above the energy threshold for inverse neutron decay (1.8 MeV). Detection above background is facilitated by the delayed coincidence signal from the capture of the neutron. This double hit signature permits identification of reactor and natural radioactive decay neutrinos. |
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The detector
concept is similar to that employed by the operating KamLAND experiment in |
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To reduce
background from nuclear power reactors and to gain sensitivity to radioactive
elements in Earth's mantle Hanohano is placed on the oceanic crust near |
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//////UNDER CONSTRUCTION/////
Hanohano Related Conferences:
this site developed by steve dye, feb. 2005
updated by jgl,
5/07