Temperature dependence of the soft-x-ray emission edges of simple metals

Journal Article · Thu May 15 04:00:00 EDT 1980 · Phys. Rev., B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.21.4552· OSTI ID:5298500

Tagle, J A; Arakawa, E T; Callcott, T A

The widths and energy positions of the M/sub 2,3/-emission edge of potassium, K-emission edge of beryllium, and L/sub 2,3/-emission edges of aluminum and magnesium have been measured for temperatures between 80 and 600 /sup 0/K. All band edges broaden (..delta..GAMMA) and shift in energy (..delta..E) with increasing temperatures for these materials. Similar results were reported earlier for the Li K-emission edge and Na L/sub 2,3/ edge. Lattice-relaxation processes and the phonon core-hole interaction are the dominant mechanisms affecting the core-level widths and the experimentally observed edge widths. The edge shifts are found to be proportional to the thermal expansion of the lattice, and are discussed in terms of the electron energy-level shifts which occur as the lattice dilates.

• Research Organization: Health and Safety Research Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5298500
• Journal Information: Phys. Rev., B: Condens. Matter; (United States), Journal Name: Phys. Rev., B: Condens. Matter; (United States) Vol. 21:10; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360104* -- Metals & Alloys-- Physical Properties
ALKALI METALS
ALKALINE EARTH METALS
ALUMINIUM
BERYLLIUM
ELEMENTS
MAGNESIUM
METALS
POTASSIUM
SPECTRA
TEMPERATURE DEPENDENCE
X-RAY SPECTRA