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- K-alpha abstract "In X-ray spectroscopy, K-alpha emission lines result when an electron transitions to the innermost "K" shell (principal quantum number 1) from a 2p orbital of the second or "L" shell (with principal quantum number 2). The line is actually a doublet, with slightly different energies depending on spin-orbit interaction energy between the electron spin and the orbital momentum of the 2p orbital. K-alpha is typically by far the strongest X-ray spectral line for an element bombarded with energy sufficient to cause maximally intense X-ray emission.The analogous K-alpha spectra line in hydrogen is known as Lyman alpha; however because of hydrogen's small nuclear charge, this line is in the ultraviolet, not the X-ray range. See Siegbahn notation for the newer IUPAC-recommended spectral notation system. An example of K-alpha lines are those seen for iron as iron atoms radiating X-rays spiralling into a black hole at the center of a galaxy [1]. For such purposes, the energy of the line is adequately calculated to 2-digit accuracy by the use of Moseley's law: , where Z is the atomic number. For example, K-alpha for iron (Z = 26) is calculated in this fashion as 10.2 eV (25)2 = 6.38 keV energy. For astrophysical purposes, Doppler and other effects (such as gravitational broadening) show the iron line to no better accuracy than 6.4 keV. [2]".
- K-alpha thumbnail Copper_K_Rontgen.png?width=300.
- K-alpha wikiPageExternalLink 0405337.
- K-alpha wikiPageExternalLink 340992&erFrom=-6703307617883835216Guest.
- K-alpha wikiPageID "8998767".
- K-alpha wikiPageRevisionID "594027494".
- K-alpha hasPhotoCollection K-alpha.
- K-alpha subject Category:Astronomical_spectroscopy.
- K-alpha subject Category:Atomic_physics.
- K-alpha subject Category:Quantum_chemistry.
- K-alpha subject Category:Spectroscopy.
- K-alpha subject Category:X-rays.
- K-alpha comment "In X-ray spectroscopy, K-alpha emission lines result when an electron transitions to the innermost "K" shell (principal quantum number 1) from a 2p orbital of the second or "L" shell (with principal quantum number 2). The line is actually a doublet, with slightly different energies depending on spin-orbit interaction energy between the electron spin and the orbital momentum of the 2p orbital.".
- K-alpha label "Charakteristische Röntgenstrahlung".
- K-alpha label "K-alpha".
- K-alpha label "Karakteristieke straling".
- K-alpha label "Promieniowanie charakterystyczne".
- K-alpha sameAs Charakteristische_Röntgenstrahlung.
- K-alpha sameAs Karakteristieke_straling.
- K-alpha sameAs Promieniowanie_charakterystyczne.
- K-alpha sameAs m.027sw0h.
- K-alpha sameAs Q337841.
- K-alpha sameAs Q337841.
- K-alpha wasDerivedFrom K-alpha?oldid=594027494.
- K-alpha depiction Copper_K_Rontgen.png.
- K-alpha isPrimaryTopicOf K-alpha.
