source: sasview/src/sas/models/include/lamellarPS.h @ 686fd10

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Last change on this file since 686fd10 was 79492222, checked in by krzywon, 10 years ago

Changed the file and folder names to remove all SANS references.

  • Property mode set to 100644
File size: 2.1 KB
Line 
1/*
2        TODO: Add 2D model
3 */
4
5#if !defined(lamellarPS_h)
6#define lamellarPS_h
7#include "parameters.hh"
8
9/** Structure definition for concentrated lamellar form factor parameters
10 * [PYTHONCLASS] = LamellarPSModel
11 * [DISP_PARAMS] = delta, spacing
12   [DESCRIPTION] = <text>[Concentrated Lamellar Form Factor] Calculates the scattered
13           intensity from a lyotropic lamellar phase.
14           The intensity (form factor and structure
15           factor)calculated is for lamellae of
16           uniform scattering length density that
17           are randomly distributed in solution
18           (a powder average). The lamellae thickness
19                is polydisperse. The model can also
20                be applied to large, multi-lamellar vesicles.
21                No resolution smeared version is included
22                in the structure factor of this model.
23 *Parameters: spacing = repeat spacing,
24                delta = bilayer thickness,
25                sld_bi = SLD_bilayer
26                sld_sol = SLD_solvent
27                n_plate = # of Lamellar plates
28                caille = Caille parameter (<0.8 or <1)
29                background = incoherent bgd
30                scale = scale factor
31</text>
32   [FIXED]= <text>delta.width; spacing.width</text>
33   [ORIENTATION_PARAMS]=
34
35 **/
36
37class LamellarPSModel{
38public:
39  // Model parameters
40  /// Scale factor
41  //  [DEFAULT]=scale=1.0
42  Parameter scale;
43  /// repeat spacing of the lamellar [A]
44  //  [DEFAULT]=spacing=400 [A]
45  Parameter spacing;
46  /// bilayer thicknes [A]
47  //  [DEFAULT]=delta=30 [A]
48  Parameter delta;
49  /// SLD of bilayer [1/A^(2)]
50  //  [DEFAULT]=sld_bi=6.3e-6 [1/A^(2)]
51  Parameter sld_bi;
52  /// SLD of solvent [1/A^(2)]
53  //  [DEFAULT]=sld_sol=1.0e-6 [1/A^(2)]
54  Parameter sld_sol;
55  /// Number of lamellar plates
56  //  [DEFAULT]=n_plates=20
57  Parameter n_plates;
58  /// caille parameters
59  //  [DEFAULT]=caille=0.1
60  Parameter caille;
61  /// Incoherent Background [1/cm]
62  //  [DEFAULT]=background=0.0 [1/cm]
63  Parameter background;
64  // Constructor
65  LamellarPSModel();
66
67  // Operators to get I(Q)
68  double operator()(double q);
69  double operator()(double qx, double qy);
70  double calculate_ER();
71  double calculate_VR();
72  double evaluate_rphi(double q, double phi);
73};
74
75#endif
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