1 | #if !defined(core_shell_h) |
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2 | #define core_shell_h |
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3 | |
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4 | /** |
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5 | * Structure definition for core-shell parameters |
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6 | */ |
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7 | //[PYTHONCLASS] = CoreShellModel |
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8 | //[DISP_PARAMS] = radius, thickness |
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9 | //[DESCRIPTION] =<text> Form factor for a monodisperse spherical |
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10 | // particle with a core-shell structure: |
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11 | // The form factor is normalized by the |
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12 | // total particle volume. |
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13 | // |
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14 | // radius: core radius |
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15 | // thickness: shell thickness |
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16 | // |
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17 | // Ref: Guinier, A. and G. Fournet, |
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18 | // John Wiley and Sons, New York, 1955. |
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19 | // </text> |
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20 | //[FIXED]= <text> thickness.width;radius.width</text> |
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21 | typedef struct { |
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22 | /// Scale factor |
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23 | // [DEFAULT]=scale=1.0 |
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24 | double scale; |
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25 | /// Core Radius (A) 60.0 |
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26 | // [DEFAULT]=radius=60.0 A |
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27 | double radius; |
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28 | /// Shell Thickness (A) 10.0 |
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29 | // [DEFAULT]=thickness=10 A |
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30 | double thickness; |
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31 | /// Core SLD (Å-2) 1.0e-6 |
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32 | // [DEFAULT]=core_sld=1.0e-6 A-2 |
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33 | double core_sld; |
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34 | /// Shell SLD (Å-2) 2.0e-6 |
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35 | // [DEFAULT]=shell_sld=2.0e-6 A-2 |
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36 | double shell_sld; |
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37 | /// Solvent SLD (Å-2) 3.0e-6 |
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38 | // [DEFAULT]=solvent_sld=3.0e-6 A-2 |
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39 | double solvent_sld; |
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40 | /// Incoherent Background (cm-1) 0.000 |
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41 | // [DEFAULT]=background=0 cm-1 |
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42 | double background; |
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43 | } CoreShellParameters; |
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44 | |
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45 | |
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46 | |
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47 | /// 1D scattering function |
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48 | double core_shell_analytical_1D(CoreShellParameters *pars, double q); |
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49 | |
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50 | /// 2D scattering function |
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51 | double core_shell_analytical_2D(CoreShellParameters *pars, double q, double phi); |
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52 | double core_shell_analytical_2DXY(CoreShellParameters *pars, double qx, double qy); |
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53 | |
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54 | #endif |
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