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157. Problem 20.61 (RHK) The speed of light in water is
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(about
three-fourths the speed in vacuum). A beam of high-speed electrons emits
Cerenkov radiation in water, the wave front being a cone of angle
.
We have to find the speed of electrons in the water.
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Solution: Click For PDF Version A beam of high-speed electrons from a betatron emits Cerenkov radiation in
water. Let the speed of electrons be
Therefore,
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157. Problem 20.61 (RHK) The speed of light in water is
|
|
Solution: Click For PDF Version A beam of high-speed electrons from a betatron emits Cerenkov radiation in
water. Let the speed of electrons be
Therefore,
|
. The wave
front of the Cerenkov radiation forms a cone of angle
.
From the diagram we note that the speed of radiation
(
