mar345 Program Manual | 3 3 |
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The plot area of the window shows the following features:
Vertical axis | Interpolated intensities |
Upper horizontal axis | Length of line in pixel units. |
Lower horizontal axis | Length of line in mm units. |
Left dashed red line | Marks the begginning of a measured distance. This line can be |
| moved using the left mouse button. |
Right dashed red line | Marks the begginning of a measured distance. This line can be |
| moved using the right mouse button. |
Horizontal red lines | Shows the length of the line in pixels (mm) and the distance |
| between the dashed vertical lines. |
The pointer can be used to measure distances by setting the red dashed lines to the desired position along the drawn line. This is particularly useful if you want to measure cell constants. The program features a peak finding algorithm which tries to set the bars on top of the first and the last peak of the plot. In between the peaks the program then looks for other peaks and tries to calculate the best inter−peak distances by assuming a harmonic oscillation. Th e no. of peaks calculated by the program is displayed in the "No. of peaks" text field. Of course, this value may be modified. The derived cell constants do not take into account any particular setting or symmetry of the crystal but calculates cell constants assuming plain orthogonal axes in reciprocal space.
