Radius of gyration calculator
of concentric shell models.
Enter the number of shells, the lengths of the respective semi-axis Rx(i), Ry(i) and Rz(i)
(z is in the axis of rotation) and the corresponding
electron-density c(i) between R(i-1) <= R(i), with R(1) being the innermost shell and R(n) the outermost shell, respectively.
The values of the radius of gyration Rg and of
the zero-angle intensity I(0), respectively, will be calculated. Units are arbitrary and in
metric dimensions (usually in Å or nm).
In case of models extending infinitely in the 3rd dimension, Rg of the cross-section
(circle, ellipse or rectangle, Rz is set to 0), and in case of models spreading infinitely
in two dimensions, Rg of the thickness (line, Rx and Ry are set to 0) will be calculated, respectively.
In case of a torus, Rz is defined as the semi-axis of the torus (Rzb/Rza ratio of the two semi-axes), with the semi-axes of the tubular cross-section (o: round, #:rectangular) of the torus Rx(i) parallel to Rz and Ry(i) normal to Rz.