Difference between revisions of "X-ray absorption & fluorescence"
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Jump to navigationJump to search (Created page with "* [http://11bm.xor.aps.anl.gov/absorb/absorb.php '''Absorb''': compute X-ray absorption for powder XRD capillary samples (11BM page)] * [http://csrri.iit.edu/mucal.html '''MuCal...") |
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== More Info == | |||
Info on Sample Absorption (11BM page) | |||
http://11bm.xor.aps.anl.gov/absorption.html | |||
== Absorption Length == | == Absorption Length == | ||
Alternatively ''Attenuation Length'' is defined as the distance into a material where the x-ray beam intensity has decreased to 1 / e, or about 63% of the incident beam. The X-ray beam intensity at depth x into a material is calculated by Beer-Lambert law: | Alternatively ''Attenuation Length'' is defined as the distance into a material where the x-ray beam intensity has decreased to 1 / e, or about 63% of the incident beam. The X-ray beam intensity at depth x into a material is calculated by Beer-Lambert law: | ||
I(x) = e^(-x/lamda) | I(x) = e^(-x/lamda) | ||
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1/mu = x | 1/mu = x | ||
== Links == | |||
* [http://11bm.xor.aps.anl.gov/absorb/absorb.php '''Absorb''': compute X-ray absorption for powder XRD capillary samples (11BM page)] | |||
* [http://csrri.iit.edu/mucal.html '''MuCal''': calculate X-ray absorption, fluorescence and more (by C. Segre @ IIT/ANL)] | |||
Revision as of 23:42, 28 August 2011
More Info
Info on Sample Absorption (11BM page) http://11bm.xor.aps.anl.gov/absorption.html
Absorption Length
Alternatively Attenuation Length is defined as the distance into a material where the x-ray beam intensity has decreased to 1 / e, or about 63% of the incident beam. The X-ray beam intensity at depth x into a material is calculated by Beer-Lambert law:
I(x) = e^(-x/lamda)
ln(1/e) = ln(e ^-x/Lambda)
1 = x/Lambda
1/lamda = x
1/mu = x
