I(q) function calculator of concentric 3D/2D/1D shell models
This Javascript calculates the scattering curve I(q) of concentric shell models: sphere, disc (cross-section of long rods) or rod (thickness of large discs). Enter the number of radii, the values for the radius R(i) and its electron-density c(i) (between R(i) and R(i-1)). The scattering curve I(q) of the spherical model (D=3) or of the cross-section (2D) or of the thichness (1D) will be calculated for Nr q-values from q = 0 to qz with a scaling factor f. The curves can be multiplied by q^n (with n being -2/-1/0/1/2) and an offset can be added (for vertical shifting of multiple curves). The values are listed in I(q) vs q (where I(q) and/or q can be lin or log, respectively) in arbitrary units and can be copied and pasted from the text-window into any text-file for further processing and graphical displaying. The plot itself can be saved as a png-image file (see options by placing cursor on plot).
Input
I(q)
shells
8
7
6
5
4
3
2
1
I*q^n
0
1
2
-1
-2
Nr
q
_{z}
f
d-spac
R(1)
c(1)
R(2)
c(2)
R(3)
c(3)
R(4)
c(4)
R(5)
c(5)
R(6)
c(6)
R(7)
c(7)
R(8)
c(8)
cub (3D)
hex (2D)
squ (2D)
lam (1D)
overlay
no overlay
R
_{g}
Author:
M.Kriechbaum
, TU-Graz (2012), e-mail:
manfred.kriechbaum@tugraz.at