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Posted by
Ajay Kumar

Calculating critical angle density XRR?

Hello I am wondering how to calculate XRR density using the common formula for the critical angle ofθc ≈ sqrt(δ)where δ=(electron _radius*electron_density*( λ)^2)/2π where the electron density is = 0.007/Angstrom^3 electron radius = 2.817E-5 Angstromlambda = 1.544 AngstromThe resulting value is much smaller than any reasonable critical angle? What am I doing incorrectly?