QMSuperpositionFFTApp which adds a view of the momentum-space wave function.
In addition to the parameters in QMSuperpositionApp, you can also change the following parameters in the OSP Control window:
p min: sets the minimum p value shown on the momentum-space graph.
p max: sets the maximum p value shown on the momentum-space graph.
p range: sets the range of the momentum-space wave function.
gutter points: sets the number of points the program will calculate the FFT beyond where the position-space wave function is zero. This increases the number of points, and hence the precision, of the FFT.