PHYS2DQuiz5Solutions

PHYS2DQuiz5Solutions - 1 An X-Ray photon is Compton...

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1.) An X-Ray photon is Compton scattered by an electron through an angle of 120º, and is then made to fall on a Copper crystal of d-spacing 1.8 .10 -10 m. The first order Bragg diffraction peak is observed at a Bragg angle of 3º. Calculate the energy (in KeV) of the original X-Ray photon. 𝜆 = 2 ? sin φ , φ = 3 ° 𝜆 − 𝜆 = ℎ? 𝑚? 2 1 cos 𝜃 , 𝜃 = 120 ° 𝐸 = ℎ? 𝜆 = ℎ? 2 ? sin φ − ℎ? 𝑚? 2 1 cos 𝜃 = 81.6 keV 2.)
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