Thomson cross section

physics

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In radiation: Cross section and Compton scattering
…cross section is called the Thomson cross section, symbolized by the Greek letter sigma with subscript zero, σ₀, and is equal to a numerical factor times the square of the term, electric charge squared divided by electron rest energy, or σ₀ = (8π/3) (e²/mc²)². When the photon energy is equal…
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