[27fea3f] | 1 | #if !defined(hollow_cylinder_h) |
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| 2 | #define hollow_cylinder_h |
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| 3 | |
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| 4 | /** |
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| 5 | * Structure definition for hollow cylinder parameters |
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| 6 | */ |
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| 7 | //[PYTHONCLASS] = HollowCylinderModel |
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[e2afadf] | 8 | //[DISP_PARAMS] = core_radius, radius, length, axis_theta, axis_phi |
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[7ad9887] | 9 | //[DESCRIPTION] = <text> P(q) = scale*<f*f>/Vol + bkg, where f is the scattering amplitude. |
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| 10 | // core_radius = the radius of core |
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| 11 | // radius = the radius of shell |
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| 12 | // length = the total length of the cylinder |
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| 13 | // contrast = SLD of solvent - SLD of shell |
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| 14 | // background = incoherent background |
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| 15 | // </text> |
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[e2afadf] | 16 | //[FIXED]= <text> axis_phi.width; axis_theta.width; length.width;core_radius.width; radius</text> |
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[27fea3f] | 17 | //[ORIENTATION_PARAMS]= axis_phi; axis_theta;axis_phi.width; axis_theta.width |
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| 18 | |
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| 19 | |
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| 20 | typedef struct { |
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| 21 | /// Scale factor |
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| 22 | // [DEFAULT]=scale=1.0 |
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| 23 | double scale; |
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| 24 | |
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| 25 | /// Core radius [A] |
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| 26 | // [DEFAULT]=core_radius=20.0 [A] |
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| 27 | double core_radius; |
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| 28 | |
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| 29 | /// Shell radius [A] |
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[e2afadf] | 30 | // [DEFAULT]=radius=30.0 [A] |
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| 31 | double radius; |
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[27fea3f] | 32 | |
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| 33 | /// Hollow cylinder length [A] |
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| 34 | // [DEFAULT]=length=400.0 [A] |
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| 35 | double length; |
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| 36 | |
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[27972c1d] | 37 | /// Contrast [1/A^(2)] |
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| 38 | // [DEFAULT]=contrast=5.3e-6 [1/A^(2)] |
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[27fea3f] | 39 | double contrast; |
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| 40 | |
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| 41 | /// Incoherent Background [1/cm] |
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| 42 | // [DEFAULT]=background=0.01 [1/cm] |
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| 43 | double background; |
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| 44 | |
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| 45 | /// Orientation of the long axis of the hollow cylinder w/respect incoming beam [rad] |
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| 46 | // [DEFAULT]=axis_theta=1.57 [rad] |
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| 47 | double axis_theta; |
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| 48 | |
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| 49 | /// Orientation of the long axis of the hollow cylinder in the plane of the detector [rad] |
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| 50 | // [DEFAULT]=axis_phi=0.0 [rad] |
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| 51 | double axis_phi; |
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| 52 | |
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| 53 | } HollowCylinderParameters; |
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| 54 | |
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| 55 | |
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| 56 | |
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| 57 | /// 1D scattering function |
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| 58 | double hollow_cylinder_analytical_1D(HollowCylinderParameters *pars, double q); |
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| 59 | |
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| 60 | /// 2D scattering function |
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| 61 | double hollow_cylinder_analytical_2D(HollowCylinderParameters *pars, double q, double phi); |
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| 62 | double hollow_cylinder_analytical_2DXY(HollowCylinderParameters *pars, double qx, double qy); |
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| 63 | double hollow_cylinder_analytical_2D_scaled(HollowCylinderParameters *pars, double q, double q_x, double q_y); |
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| 64 | |
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| 65 | #endif |
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