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. ° = 2 ? sin φ± , φ = 3 ° ° − ° = ℎ? ²? 2 1 cos ³±± , ³ = 120 ° ´ = ℎ? ° = ℎ? 2 ? sin φ± − ℎ? ²? 2 1 cos ³±± = 81.6 keV 2.) An electron in an electron microscope is accelerated through a potential difference of 8 KV. (This
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This note was uploaded on 12/07/2009 for the course PHYS phys 2d taught by Professor Hirsch during the Spring '08 term at UCSD.

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