core_shell_microgelsmagnetic_modelticket-1257-vesicle-productticket_1156ticket_1265_superballticket_822_more_unit_tests
Last change
on this file since 3f818b2 was
d277229,
checked in by grethevj, 6 years ago
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Models updated to include choices for effective interaction radii
|
-
Property mode set to
100644
|
File size:
570 bytes
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Rev | Line | |
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[d277229] | 1 | static double form_volume(double rg) |
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| 2 | { |
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| 3 | return 1.0; |
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| 4 | } |
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| 5 | |
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| 6 | static double |
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| 7 | effective_radius(int mode, double rg) |
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| 8 | { |
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| 9 | if (mode == 1) { |
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| 10 | return rg; |
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| 11 | } else if (mode == 2) { |
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| 12 | return 2.0*rg; |
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| 13 | } else if (mode == 3) { |
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| 14 | return 3.0*rg; |
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| 15 | } else { |
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| 16 | return sqrt(5.0/3.0)*rg; |
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| 17 | } |
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| 18 | } |
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| 19 | |
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| 20 | double Iq(double q, double i_zero, double rg) |
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| 21 | { |
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| 22 | const double uarg = square(q*rg); |
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| 23 | const double inten; |
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| 24 | if (q == 0) { |
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| 25 | inten = i_zero; |
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| 26 | } else { |
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| 27 | inten = 2.0*i_zero * (exp(-uarg) + uarg - 1.0)/square(uarg); |
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| 28 | } |
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| 29 | |
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| 30 | return inten; |
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| 31 | } |
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