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An X-ray photon of unknown wavelength is scattered from a free electron at rest and the...

An X-ray photon of unknown wavelength is scattered from a free electron at rest and the scattered X-ray is observed at 24.2 degrees to the incident X-ray. What is the Compton shift(in pm)?

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solution : given scattering angle . 0= 24.2° we know that the equation of the the compton shift is 4 = h (1-coso) mec where h

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