X-Ray Optics Calculator
Refractive Index Decrement
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Henke data set
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Chantler data set
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Delta δ
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Beta β
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Total linear attenuation coefficient μ, μm-1
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Linear attenuation coefficient (photoelectric part), μm-1
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Linear attenuation coefficient (Compton scattering part), μm-1
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Linear attenuation coefficient (Rayleigh scattering part), μm-1
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β' = λμ/4π
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π - shift length, μm
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Indexes ratio δ/(2πβ)
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Indexes ratio χ = β / δ
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Critical angle for total external reflection (2δ)1/2, rad
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Brewster angle, rad
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Maximum possible gain 4πδ/(λμ)
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Diffraction-limited focus size λ/(2δ)1/2, μm
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Effective aperture of parabolic profile with focus distance F = 1 m, μm
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Zone plate 1-st order efficiency [1 + exp(-χπ)]2/ π2
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Serguei Kuznetsov , IMT RAS, Chernogolovka, Russia. |