Photon Interactions 22.104 Spring 2002 MIT Department of Nuclear - - PowerPoint PPT Presentation

photon interactions
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Photon Interactions 22.104 Spring 2002 MIT Department of Nuclear - - PowerPoint PPT Presentation

Photon Interactions 22.104 Spring 2002 MIT Department of Nuclear Engineering 22.104 Spring 2002 Photon Interactions in Matter MIT Department of Nuclear Engineering 22.104 Spring 2002 Table


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SLIDE 1

MIT Department of Nuclear Engineering 22.104 Spring 2002

Photon Interactions

22.104 Spring 2002

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SLIDE 2

MIT Department of Nuclear Engineering 22.104 Spring 2002

Photon Interactions in Matter

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Table of Processes

Ki n d s of I n t e r a ct i on Ef f e ct s of I n t e r a ct i on

Absor pt ion Elast ic scat t ering ( coher ent ) I nelast ic scat t ering ( incoherent ) At om ic Elect r ons

Phot oelect ric

Rayleigh scat t er ing

Com pt on

Nucleons Phot odisint egrat ion Thom son scat t er ing Nuclear Resonance Elect r ic f ields ar ound nuclei

  • r elect rons

Pair pr oduct ion

Delbruck scat t ering Meson f ields ar ound nucleons Meson pr odu ct ion

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Photoelectric Effect

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Cross-sections in Air

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Z dependence of Photoelectric Cross-section

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Tungsten at Low Energies

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Compton Scattering

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Angular Dependence of Compton Scattered Photon

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Number vs. Angle for Compton Scattered Photons

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SLIDE 11

MIT Department of Nuclear Engineering 22.104 Spring 2002

Number vs. Angle for Compton Scattered Electrons

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Interactions of Charged Particles in Matter

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Energy Distribution of Compton Electrons

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Pair Production

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Linear Absorption Coefficients in Al

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Mass Attenuation in Water

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MIT Department of Nuclear Engineering 22.104 Spring 2002

Relative Importance of Processes