3.3.3.10. NXabsorption_edge¶
Status:
base class (contribution), extends NXobject
Description:
An absorption edge is a sharp discontinuity in the X-ray absorption spectrum ...
An absorption edge is a sharp discontinuity in the X-ray absorption spectrum of an atom that occurs when the incident photon energy reaches the threshold energy for exciting the atom from its neutral ground state to a core-vacancy state.
Symbols:
No symbol table
- Groups cited:
Structure:
name: (optional) NX_CHAR
Name of the absorption edge using `IUPAC notation`_ (e.g., ``K``, ...
Name of the absorption edge using IUPAC notation (e.g.,
K,L2,M5), which identifies the core-vacancy state of the atom.Correspondence between IUPAC notation and electron configuration, expressed as vacancy notation (superscript \(-1\)):
IUPAC
Electron configuration
K
\(1s^{-1}\)
L1
\(2s^{-1}\)
L2
\(2p_{1/2}^{-1}\)
L3
\(2p_{3/2}^{-1}\)
M1
\(3s^{-1}\)
M2
\(3p_{1/2}^{-1}\)
M3
\(3p_{3/2}^{-1}\)
M4
\(3d_{3/2}^{-1}\)
M5
\(3d_{5/2}^{-1}\)
N1
\(4s^{-1}\)
N2
\(4p_{1/2}^{-1}\)
N3
\(4p_{3/2}^{-1}\)
N4
\(4d_{3/2}^{-1}\)
N5
\(4d_{5/2}^{-1}\)
N6
\(4f_{5/2}^{-1}\)
N7
\(4f_{7/2}^{-1}\)
O1
\(5s^{-1}\)
O2
\(5p_{1/2}^{-1}\)
O3
\(5p_{3/2}^{-1}\)
O4
\(5d_{3/2}^{-1}\)
O5
\(5d_{5/2}^{-1}\)
O6
\(5f_{5/2}^{-1}\)
O7
\(5f_{7/2}^{-1}\)
P1
\(6s^{-1}\)
P2
\(6p_{1/2}^{-1}\)
P3
\(6p_{3/2}^{-1}\)
P4
\(6d_{3/2}^{-1}\)
P5
\(6d_{5/2}^{-1}\)
Per IUPAC, subscripts may be dropped when unknown or irrelevant. When two spin-orbit split levels are not distinguished, they may be written together (e.g.
L2,3).Any of these values:
K
L1
L2
L3
L2,3
M1
M2
M3
M2,3
M4
M5
M4,5
N1
N2
N3
N2,3
N4
N5
N4,5
N6
N7
N6,7
O1
O2
O3
O2,3
O4
O5
O4,5
O6
O7
O6,7
P1
P2
P3
P2,3
P4
P5
P4,5energy: (optional) NX_FLOAT {units=NX_ENERGY}
Energy of the absorption edge.
atom: (optional) NXatom
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List of hypertext anchors for all groups, fields, attributes, and links defined in this class.