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MATERIALS SCIENCE & ENGINEERING

MATERIALS SCIENCE & ENGINEERING . Part of . A Learner’s Guide. AN INTRODUCTORY E-BOOK. Anandh Subramaniam & Kantesh Balani Materials Science and Engineering (MSE) Indian Institute of Technology, Kanpur- 208016 Email: anandh@iitk.ac.in, URL: home.iitk.ac.in/~anandh.

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MATERIALS SCIENCE & ENGINEERING

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  1. MATERIALS SCIENCE & ENGINEERING Part of A Learner’s Guide AN INTRODUCTORY E-BOOK Anandh Subramaniam & Kantesh Balani Materials Science and Engineering (MSE) Indian Institute of Technology, Kanpur- 208016 Email:anandh@iitk.ac.in, URL:home.iitk.ac.in/~anandh http://home.iitk.ac.in/~anandh/E-book.htm

  2. Incoherent Scattering (Compton modified) From loosely bound charges • Incoherently scattered X-rays darken the background and are not useful from a XRD point of view • Here the particle picture of the electron & photon comes handy Electron knocked aside 2 No fixed phase relation between the incident and scattered wavesIncoherent  does not contribute to diffraction (Darkens the background of the diffraction patterns)

  3. Fluorescent X-rays • This signal is produced akin to the way the original X-ray beam was produced; just that the input now is not electrons but X-rays Knocked out electronfrom inner shell Vacuum Energylevels Characteristic x-rays (Fluorescent X-rays) (10−16s later  seems like scattering!) Nucleus

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