Potassium
Element density: 0.86 g/cm3
Electron configuration: [Ar]4s1
Oxidation states: +1
Edges
Explore electron energy loss spectroscopy (EELS) reference spectra, featuring major and minor edges used for elemental identification and chemical state analysis in materials research.
Major edges | |||
|---|---|---|---|
K | 3607 |
|  |
L2 | 296 |  |  |
L3 | 294 | | |
M2,3 | 18 |  | |
Minor edges | |||
|---|---|---|---|
L1 | 377 |
| |
M1 | 34 |
|  |
Considerations
L-edge used for ratio imaging in biological material.
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Related spectral data
KCl particle on holey C film (0 – 450 eV)
Material analyzed: KCl
Related elements: Potassium, Chlorine
Data contributor: Gatan
Beam energy (keV): 200
Nominal energy range (eV): 0 – 450
Collection semi-angle effective (mrad): 100
Notes: Serial EELS; mass loss during acquisition; zero-loss peak intensity = 5.71e8; total elastic int. / zero-loss int. = 1.05; gain change factor = 661; 20 sweeps 10 ms dwell
KBr particles on thin C film (0 – 460 eV)
Material analyzed: KBr
Related elements: Potassium, Bromine
Data contributor: Gatan
Beam energy (keV): 120
Nominal energy range (eV): 0 – 460
Collection semi-angle effective (mrad): 13
Notes: Serial EELS; mass loss during acquisition; saturated at gain change; zero-loss peak intensity = 1.62e9; total elastic int. / zero-loss int. = 0.16; gain change = 3100
Applications
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