NEXAFS
(Near Edge X-ray Absorption Fine Structure)
is an element-specific electron
spectroscopic technique which is highly sensitive to bond angles, bond
lengths and the presence of adsorbates.
It is widely used in surface science
and has also been used to study polymers
and magnetic materials. NEXAFS is synonymous with XANES (X-ray Absorption
Near Edge Structure) but NEXAFS by convention is usually reserved for soft
X-ray spectroscopy (photonenergy less than 1000 electron
volts). NEXAFS is distinguished from the closely related EXAFS method in that
NEXAFS concentrates on fine structure within about 30 ev of the absorption
edge while EXAFS considers the extended spectrum out to much higher electron kinetic energies.
Method
that uses measurement of the energies of photons
and electrons
emitted from matter following irradiation with x-ray photons, which themselves have energies close to the
absorption edge of the material, to derive structural information about the
irradiated material
Method
that uses measurement of the energies of photons
and electrons
emitted from matter following irradiation with x-ray photons, which themselves have energies close to the
absorption edge of the material, to derive structural information about the
irradiated material
