journal menu
![[Figure 4]](chn5008fig4mag.jpg)
|
|
Figure 4
(a) Example of simulated constant-Q scan through the spin-wave gap in the McStas TAS model with a slit of 5 cm. The simulated data are plotted with black error bars and normalized to unity. The fitted peak positions are plotted at zero as coloured squares. Also plotted are the simulated MnF2 data with a Gaussian (yellow line), with a combined Gaussian + Voigt function (green line) and with our approximate convoluted gap function (red line). The pink line shows a fit to the convoluted gap function with a fixed σE. The fitted gap positions are the coloured squares at zero and the black line shows the nominal gap size at (100), ΔT = 1.062 meV. The residuals (data minus fit) are plotted below. The same colour coding is used in plots of (b) gap size Δ and (c) χ2 fits, showing the obtained gap values and χ2 values as a function of slit settings, respectively. |
![[Figure 4]](chn5008fig4.jpg)
 | JOURNAL OF APPLIED CRYSTALLOGRAPHY |
ISSN: 1600-5767
access
