Cherenkov radiation is electromagnetic radiation emitted when a fast-moving part

Question

Cherenkov radiation is electromagnetic radiation emitted when a fast-moving particle such as a proton passes through an insulator at a speed faster than the speed of light in that insulator. The Cherenkov radiation looks like a blue glow in the shape of a cone behind the particle. The radiation is named after Soviet physicist Pavel Cherenkov, who received a Nobel Prize in 1958 for describing the radiation.

Part A

Estimate the smallest speed of a proton moving in oil that will produce Cherenkov radiation behind it. Assume that oil has an index of refraction n = 1.60.

Explanation / Answer

condition for Cherenkov radiation is particle travels faster than light in the medium.

velocity of light in the medium = velocity of light in vacuum/ refractive index

velocity of light in oil = 3 X 108 m/s / 1.6

= 1.875 X 108 m/s (108 is 10 raised o poer 8)

if proton exceeds this velocity it emits Cherenkov radiation .

answer is 1.875 X 108 m/s

Related Questions

Navigate

• Browse (All)
• Browse C
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.