Difference between revisions of "X-ray absorption spectroscopy (XAS)"
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== Definition == | == Definition == | ||
| − | X-ray Absorption Spectroscopy (XAS) is a technique for measuring the linear absorption coefficient µ(E) of a substance as a function of the incident photon energy E in the X-ray regime. This technique is element and orbital-specific and determines the local atomic and electronic structure of matter. XAS conventionally includes techniques of [[XAFS]] (''q.v.''), which in turn includes both XANES and [[EXAFS]] (''q.v.''). An XAS spectrum may also be obtained using fluorescence, electron yield and scattering processes indirectly (''i.e.'' without directly measuring the absorption of X-rays). | + | X-ray Absorption Spectroscopy (XAS) is a technique for measuring the linear absorption coefficient µ(E) of a substance as a function of the incident photon energy E in the X-ray regime. This technique is element and orbital-specific and determines the local atomic and electronic structure of matter. XAS conventionally includes techniques of [[X-ray absorption fine structure (XAFS)|XAFS]] (''q.v.''), which in turn includes both XANES and [[EXAFS - Extended X-ray absorption fine structure|EXAFS]] (''q.v.''). An XAS spectrum may also be obtained using fluorescence, electron yield and scattering processes indirectly (''i.e.'' without directly measuring the absorption of X-rays). |
== See also == | == See also == | ||
| − | *[[EXAFS | + | *[[EXAFS - Extended X-ray absorption fine structure]] |
| − | *X-ray absorption fine structure ( | + | *[[X-ray absorption fine structure (XAFS)]] |
[[Category: X-ray absorption spectroscopy]] | [[Category: X-ray absorption spectroscopy]] | ||
Revision as of 15:14, 12 April 2016
Definition
X-ray Absorption Spectroscopy (XAS) is a technique for measuring the linear absorption coefficient µ(E) of a substance as a function of the incident photon energy E in the X-ray regime. This technique is element and orbital-specific and determines the local atomic and electronic structure of matter. XAS conventionally includes techniques of XAFS (q.v.), which in turn includes both XANES and EXAFS (q.v.). An XAS spectrum may also be obtained using fluorescence, electron yield and scattering processes indirectly (i.e. without directly measuring the absorption of X-rays).