One Technique for the Detection of Neutrinos from Outer Space

question 181

Multiple Choice

One technique for the detection of neutrinos from outer space involves the reaction of neutrinos with deuterium in a water tank, with the resulting high-speed electron then generating Cherenkov radiation in the water. How is the Cherenkov radiation produced?

• A) by the passage of the charged electron through the water at a speed greater than the speed of light in a vacuum
• B) by the recombination of the electron with a proton to produce neutral hydrogen and Balmer series line emissions
• C) by the annihilation of a positron in the water by the electron
• D) by the charged electron moving in the water faster than the speed of light in water

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