What Is the Wavelength of the L Absorption Edge for Uranium?

AI Thread Summary
The K absorption edge for uranium is noted as 0.107 Å, while the Kα line measures 0.126 Å. To find the wavelength of the L absorption edge, the relevant equations involve the atomic number and the screening constant σ. The calculated wavelength for the L absorption edge is 0.71 Å. Clarification is sought on the value of σ and its calculation. The discussion emphasizes the need for understanding the relationship between atomic structure and X-ray absorption edges.
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Homework Statement



In uranium (Z=92) the K absorption edge is 0.107 Å and the Kα line is 0.126 Å. Determine the wavelength of the L absorption edge.

Homework Equations



K-edge: EK= (Z-1)2*13.6
L-edge: EL= (Z-σL)2*13.6*1/4
what is σ and how was calculated.
Characteristic X-rays: Ex = h*ν= h*c/λ= ΔEkin = Ekin(i)-Ekin(f)
Bremsstrahlung: Emax=Ekin(i)

The Attempt at a Solution


λL= 0.71 Å
 
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