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Chapter 0: Q34P (page 1)

Explain what happens in Rayleigh scattering and Raman scattering. How much faster is scattering of visible light than fluorescence?

Short Answer

Expert verified

The time scale of visible light is 10-16s.The fluorescence occurs in 10-8to10-4s.. So, the fluorescence is 107to1011times longer than the scattering of visible light.

Step by step solution

01

Explain Rayleigh and Raman scattering:

Rayleigh scattering is the scattering of light on particles that are much smaller than the wavelength of light. It is a form of elastic scattering which means that this form of scattering stores the kinetic energy of random particles of the system in which the scattering takes place. Therefore, scattered photons have the same energy as incident ones.

02

STEP-2: Raman scattering:

The Raman effect is a type of scattering of electromagnetic radiation in which light changes frequency and phase as it passes through a transparent medium.

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