description KamLAND Overview
Kamioka Liquid Scintillator Antineutrino Detector in Japan's Kamioka mine that confirmed reactor antineutrino oscillation and helped constrain radiogenic heat within the Earth.
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KamLAND ranks #26 of 279 in the Observatory ranking, behind Gemini South, ahead of Paranal Observatory.
Major neutrino experiment with landmark oscillation and geoneutrino results; highly respected in particle astrophysics.
help KamLAND FAQ
What does KamLAND detect?
KamLAND detects electron antineutrinos using a large volume of liquid scintillator viewed by photomultiplier tubes. Many of the antineutrinos in its landmark oscillation measurements originated from nuclear reactors across Japan.
How did KamLAND prove that neutrinos oscillate?
KamLAND observed fewer reactor antineutrinos than expected and measured an energy-dependent distortion consistent with oscillation. Its results complemented solar-neutrino experiments by testing the phenomenon with antineutrinos over terrestrial baselines.
Where is KamLAND located?
The detector is underground in the Kamioka mine in Gifu Prefecture, Japan. The rock overhead shields it from much of the cosmic-ray background that would interfere with rare-event measurements.
What are geoneutrinos, and how does KamLAND measure them?
Geoneutrinos are antineutrinos produced by radioactive decays inside Earth, particularly in uranium and thorium decay chains. KamLAND has detected them, helping researchers constrain how much terrestrial heat comes from radioactive decay.
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