are shown in Figure 39.15. The graphs for the three nonzero angles show two peaks, one at A, and one at l' > , The shifted peak at A' is caused by the scattering of x-rays from free electrons, which was predicted by Compton to depend on scatter- ing angle as d' -1, = m h -(1 - cos 0) (39.13)
Compton effect
The incoming photons' energy must be in the range of an X-ray frequency to generate the Compton effect. The electron does not lose enough energy that reduces the wavelength of scattered photons towards the visible spectrum. As a result, with visible lights, the Compton effect is missing.
Recoil Velocity
The amount of backward thrust or force experienced by a person when he/she shoots a gun in the forward direction is called recoil velocity. This phenomenon always follows the law of conservation of linear momentum.
For any given scattering angle θ, as shown gives the same value for the Compton shift for any wavelength. Keeping that in mind, for which of the following types of
light (d) x-rays
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