This is the introductory example for specular reflectometry with polarized neutrons.
The sample consists of a single magnetic layer on top of a substrate.
The magnetic field vector
B lies in the xy plane.
The field direction forms an angle of
Bang = 30 * deg with the x axis.
The field magnitude
Bmag=1e8 is in units of A/m.
The field is passed as an optional function argument to the constructor
The neutron polarizer and analyzer directions are set through
scan.setPolarization(polarizer_dir) scan.setAnalyzer(analyzer_dir, 1, 0.5)
The resulting reflectivities are shown in this plot:
As expected, we find the birefringent behavior. The critical angles also depends on the polarization.
The curve for polarizer settings
-+ is not shown
because it coincides with the
Here is the complete example: