Difference between revisions of "Beam projection"
KevinYager (talk | contribs) (Created page with "Due to the small grazing-incidence angle, the beam height in GISAXS becomes '''projected''' into a long stripe along the sample. Thus GISAXS is always averaging over a lar...") |
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| [https://www.google.com/search?q=(50+microns)%2F(sin(0.1+degrees))+in+mm] | | [https://www.google.com/search?q=(50+microns)%2F(sin(0.1+degrees))+in+mm] | ||
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| + | | 50 | ||
| + | | 0.12 | ||
| + | | 24 | ||
| + | | [https://www.google.com/search?q=(50+microns)%2F(sin(0.12+degrees))+in+mm] | ||
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Latest revision as of 08:52, 21 August 2019
Due to the small grazing-incidence angle, the beam height in GISAXS becomes projected into a long stripe along the sample. Thus GISAXS is always averaging over a large sample surface area. This implies that one must be careful that the sample is relatively homogeneous over the illuminated area.
Examples
| beam height | incident angle | projection | notes |
|---|---|---|---|
| (μm) | (°) | (mm) | |
| 50 | 0.05 | 57 | [1] |
| 50 | 0.10 | 29 | [2] |
| 50 | 0.12 | 24 | [3] |
| 50 | 0.15 | 19 | [4] |
| 50 | 0.20 | 14 | [5] |
| 50 | 0.40 | 7 | [6] |
