F (deg) 30.6 58.7 90.2 119.2 151.3 L' (pm) 5.52 6.40 7.60 8.84 9.69
To test the photon concept, you perform a Compton-scattering experiment in a research lab. Using photons of very short wavelength, you measure the wavelength I′ of scattered photons as a function of the scattering angle f, the angle between the direction of a scattered photon and the incident photon. You obtain these results
Your analysis assumes that the target is a free electron at rest. (a) Graph your data as I′ versus 1 - cosf. What are the slope and y-intercept of the best-fit straight line to your data? (b) The Compton wavelength lC is defined as lC = h/mc, where m is the mass of an electron. Use the results of part (a) to calculate lC. (c) Use the results of part (a) to calculate the wavelength l of the incident light.
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