One Technique for the Detection of Neutrinos from Outer Space

question 115

Multiple Choice

One technique for the detection of neutrinos from outer space involves the reaction of neutrinos with protons in a water tank,with the resulting high-speed positrons,or positive electrons,then generating Cerenkov radiation in the water.How is the Cerenkov radiation produced?

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

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Definitions:

Serratus Anterior

A muscle of the chest that assists in the upward movement of the arm and in the breathing process.

Rectus Abdominis

A long muscle running from the pubis to the rib cage, involved in flexing the lumbar spine and stabilizing the pelvis and lower back.

External Oblique

A muscle located on the lateral and anterior part of the abdomen, playing a crucial role in the movement and support of the trunk.

Internal Oblique

A muscle in the abdominal wall that assists in rotating and side-bending the trunk.