core_shell_microgelscostrafo411magnetic_modelrelease_v0.94release_v0.95ticket-1257-vesicle-productticket_1156ticket_1265_superballticket_822_more_unit_tests
Last change
on this file since bb46723 was
2c74c11,
checked in by Paul Kienzle <pkienzle@…>, 8 years ago
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implicit Iqxy; fix divide by 0 for q=0
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-
Property mode set to
100644
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File size:
1.2 KB
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1 | double form_volume(double radius, double thickness); |
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2 | |
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3 | double Iq(double q, |
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4 | double radius, |
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5 | double thickness, |
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6 | double core_sld, |
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7 | double shell_sld, |
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8 | double solvent_sld, |
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9 | double volfraction, |
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10 | double frac_dim, |
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11 | double cor_length); |
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12 | |
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13 | double form_volume(double radius, double thickness) |
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14 | { |
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15 | return 4.0 * M_PI / 3.0 * pow((radius + thickness), 3); |
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16 | } |
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17 | |
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18 | double Iq(double q, |
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19 | double radius, |
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20 | double thickness, |
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21 | double core_sld, |
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22 | double shell_sld, |
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23 | double solvent_sld, |
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24 | double volfraction, |
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25 | double frac_dim, |
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26 | double cor_length) { |
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27 | |
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28 | |
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29 | double intensity = core_shell_kernel(q, |
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30 | radius, |
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31 | thickness, |
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32 | core_sld, |
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33 | shell_sld, |
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34 | solvent_sld); |
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35 | //calculate S(q) |
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36 | double frac_1 = frac_dim-1.0; |
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37 | double qr = q*radius; |
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38 | |
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39 | double t1 = frac_dim*sas_gamma(frac_1)*sin(frac_1*atan(q*cor_length)); |
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40 | double t2 = (1.0 + 1.0/(q*cor_length)/(q*cor_length)); |
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41 | double t3 = pow(qr, frac_dim) * pow(t2, (frac_1/2.0)); |
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42 | double sq = t1/t3; |
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43 | sq += 1.0; |
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44 | |
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45 | return sq*intensity*volfraction; |
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46 | } |
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47 | |
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