Lecture10-PropertiesOfX-rays

Lecture10-Properties - EMSE 312 – Diffraction Principles Lecture 10 Basic Properties of X-rays(EM Waves X-ray Generation – Intensity of X-rays

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Unformatted text preview: EMSE 312 – Diffraction Principles Lecture 10 Basic Properties of X-rays (EM- Waves) X-ray Generation – Intensity of X-rays Continuous Radiation – Characteristic X-rays X-ray Absorption – Filters X-ray Generation X-ray Detection EMSE 312 DIFFRACTION PRINCIPLES EMSE 312 – Diffraction Principles Continuous Radiation • Intensity of X-ray Radiation – X-rays are produced bay accelerating or decelerating charge (e.g. electrons) – Probability of interaction + + + + + + + + + + 1-Incoming electron 2-electron – electron Interaction 3-X-ray emission 4-Secondary electron emission EMSE 312 – Diffraction Principles Continuous Radiation λ ν E h ν = • Intensity of X-ray Radiation – X-rays are produced bay accelerating or decelerating charge (e.g. electrons) – Probability of interaction • A = const • i = current • Z = Atomic Number • V = Acc. voltage (eV) • m = const approx. 2 34 h 6 . 6 2 1 J s − = × Bremsstrahlung m I A i Z V = ⋅ ⋅ ⋅ EMSE 312 – Diffraction Principles Properties of X-rays • Short Wavelength Limit – All Kinetic energy converted to EM Radiation Max Max SWL h c E h ν λ ⋅ = = SWL Max Acc h c h c E e V λ ⋅ ⋅ = = ⋅ Example: Acc V...
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This note was uploaded on 12/01/2011 for the course EMSE 312 taught by Professor Lagerlof,p during the Spring '08 term at Case Western.

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Lecture10-Properties - EMSE 312 – Diffraction Principles Lecture 10 Basic Properties of X-rays(EM Waves X-ray Generation – Intensity of X-rays

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