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Last change
on this file since 3f3df6c was
e262dd6,
checked in by Paul Kienzle <pkienzle@…>, 6 years ago
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futher cleanup; include Yun's hardsphere and sphere models from matlab
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-
Property mode set to
100644
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File size:
457 bytes
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| 1 | function Sq=HSS_SQ(volF,Q) |
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| 2 | %Sq=HSS_SQ(volF,Q), Q is a normalzied scattering wavevector by the diamter of the particle |
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| 3 | |
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| 4 | a1=-(1+2*volF)^2/(1-volF)^4; |
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| 5 | a2=6*volF*(1+0.5*volF)^2/(1-volF)^4; |
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| 6 | a3=volF*a1/2; |
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| 7 | %pi = 3.14159265358979; |
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| 8 | |
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| 9 | cq=4*pi*(a1./Q.^3 .* (sin(Q)-Q.*cos(Q)) + ... |
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| 10 | a2./Q.^4 .* (2*Q.*sin(Q)- (Q.^2 - 2) .* cos(Q) - 2) + ... |
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| 11 | a3./Q.^6 .* ((4*Q.^3 - 24 * Q) .* sin(Q) - (Q.^4 -12 * Q.^2 + 24) .* cos(Q) + 24) ); |
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| 12 | |
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| 13 | Sq = 1 ./ (1 - cq * volF * 6 / pi); |
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