Scattered Incident Electron х гау х гау Scattered electron FIGURE P28.79

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Further support for the photon model of electromagnetic waves comes from Compton scattering, in which x rays scatter from electrons, changing direction and frequency in the process. Classical electromagnetic wave theory cannot explain the change in frequency of the x rays on scattering, but the photon model can. Suppose an x-ray photon is moving to the right. It has a collision with a slow-moving electron, as shown. The photon transfers energy and momentum to the electron, which recoils at a high speed. The x-ray photon loses energy, and the photon energy formula E = hf tells us that its frequency must decrease. The collision looks very much like the collision between two particles.

X-ray diffraction can also change the direction of a beam of x rays. Which statement offers the best comparison between Compton scattering and x-ray diffraction?
A. X-ray diffraction changes the wavelength of x rays; Compton scattering does not.
B. Compton scattering changes the speed of x rays; x-ray diffraction does not.
C. X-ray diffraction relies on the particle nature of the x rays; Compton scattering relies on the wave nature.
D. X-ray diffraction relies on the wave nature of the x rays; Compton scattering relies on the particle nature.

Scattered
Incident
Electron
х гау
х гау
Scattered
electron
FIGURE P28.79
Transcribed Image Text:Scattered Incident Electron х гау х гау Scattered electron FIGURE P28.79
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