This window allows transitions of particular values of J and symmetry
(for both upper and lower states) to be selected. This is
especially useful for finding ground or excited state common
differences (where a set of transitions either start or end with the
same rotational level). To do this, select a particular
J
and possibly symmetry for the upper or lower state, and set the values
for the other state to "all" (the lowest values on the spin boxes).Then press the

button to simulate the selected transitions. To revert to the
original simulation, press the
button in
the main window. Matrices of the transition moment operator are also displayed in this window.
When a transition of fixed upper and lower J, and fixed symmetry, is
selected, and the transition is allowed, transition moments in the undiagonalized basis are shown
in this matrix, with the ground state basis shown down the left-hand side and
the upper state basis shown across the top of the matrix. Symmetries
are given in the upper left-hand corner e.g. <+||->