This plug-in integrates 2D detector images in azimuthal (Figure 1) or radial (Figure 2) direction using pyFAI.
- Profile: Radial for a radial plot (Figure 1) or Azimuthal for a azimuthal plot (Figure 2).
- Pixel Size X: The horizontal dimension of pixels.
- Pixel Size Y: The vertical dimension of pixels.
- Beam Center X: The horizontal pixel coordinates of direct beam center.
- Beam Center Y: The vertical pixel coordinates of direct beam center.
- Rotation: The rotation angle of a plane in which the angle of tilt is defined.
- Tilt: The angle of detector tilt within the tilt plane in degrees.
- Detector Distance: The distance from sample to detector.
- Wavelength: The X-ray wavelength.
- Start Azimuth: The azimuth angle for start of region to be integrated (range: 0 to 360).
- End Azimuth: The azimuth angle for end of region to be integrated (range: 0 to 360). Note: it is allowed that the “Start Azimuth” bigger than "End Azimuth”, e.g. “Start Azimuth” = 60 and “End Azimuth” = 59.
- Inner Radius: The radius for inner radial limit of region to be integrated.
- Outer Radius: The radius for outer radial limit of region to be integrated.
- Bins: Defines the number of output bins around the azimuth or around the radial direction (depends on profile).
- Geometry Correction: If set to 'ON' will corrects a flat 'scan' to the equivalent of a 2-theta or a Q-space scan. These are effect of distance and obliqueness at higher angle for the flat image plane compared to a detector on a 2-theta arm, always facing the sample.
- Output Unit: Select type of output 1-D scan for radial profile: "q-_nm^-1", "q-_A^-1" "2-th_deg", "2-th_rad", "r_mm". Note: This option has only effect if the profile is selected as “Radial”.
- Polarisation Correction: If set to ‘ON’, it will read the ‘Polarisation Factor’ and apply a polarization effect intensity correction.
- Polarisation Factor: Put a value to do the polarisation correction (range: -1 to 1, default value: 0.99). Note: If the polarisation factor is 0, that doesn’t mean no polarisation correction, it will do circular polarization, the correction correspond to (1+(cos2θ)^2)/2.
- Empty Beam (optional): If an image is loaded, it will be integrated the same way like the input image and the profile is returned as output I_eb. That allows to subtract an empty beam profile after correcting the sample profile for transmission.
- Dark Current (optional): If a dark current detector image is loaded, the input image and the Empty Beam will be subtracted by this image.
- image: The path to the detector image.
- x: q values if Profile is set to Radial, chi values if Profile is set to Azimuthal.
- I: The integrated intensity data.
- I_eb: The integrated empty beam if an empty beam image was specified in the parameters. Otherwise an array of zeros.