Actions

Difference between revisions of "Absorption edge"

From Online Dictionary of Crystallography

m (Ja)
m
Line 16: Line 16:
 
Section 4.2.3 of ''International Tables of Crystallography, Volume C''
 
Section 4.2.3 of ''International Tables of Crystallography, Volume C''
  
[[Category:X-rays]]<br>
+
[[Category:X-rays]]
 +
[[Category: X-ray absorption spectroscopy]]

Revision as of 15:38, 12 April 2016

Discontinuité, arête d'absorption (Fr). Absorptionskante (Ge). Canto de absorción (Sp). край поглощения (Ru). Spigolo di assorbimento (It). 吸収端 (Ja)

Definition

An absorption edge is a sharp discontinuity in the absorption spectrum of X-rays by an element that occurs when the energy of the photon corresponds to the energy of a shell of the atom (K, LI, LII, LIII, etc.).

Examples

For gallium: [math]\lambda_{K}[/math] = 1.1958 Ǻ; [math]\lambda_{L_{I}}[/math] = 9.5446 Ǻ; [math]\lambda_{L_{II}}[/math] = 10.8414 Ǻ; [math]\lambda_{L_{III}}[/math]= 11.1038 Ǻ;

For arsenic: [math]\lambda_{K}[/math] = 1.0448 Ǻ; [math]\lambda_{L_{I}}[/math] = 8.1195 Ǻ; [math]\lambda_{L_{II}}[/math] = 9.1187 Ǻ; [math]\lambda_{L_{III}}[/math]= 9.3617 Ǻ;

See also

Section 4.2.3 of International Tables of Crystallography, Volume C