[f94d8a2] | 1 | double form_volume(double length, double kuhn_length, double radius); |
---|
| 2 | double Iq(double q, double length, double kuhn_length, double radius, |
---|
| 3 | double sld, double solvent_sld); |
---|
| 4 | double Iqxy(double qx, double qy, double length, double kuhn_length, |
---|
| 5 | double radius, double sld, double solvent_sld); |
---|
| 6 | double flexible_cylinder_kernel(double q, double length, double kuhn_length, |
---|
| 7 | double radius, double sld, double solvent_sld); |
---|
| 8 | |
---|
| 9 | |
---|
| 10 | double form_volume(double length, double kuhn_length, double radius) |
---|
| 11 | { |
---|
[e6408d0] | 12 | return 1.0; |
---|
[f94d8a2] | 13 | } |
---|
| 14 | |
---|
| 15 | double flexible_cylinder_kernel(double q, |
---|
| 16 | double length, |
---|
| 17 | double kuhn_length, |
---|
| 18 | double radius, |
---|
| 19 | double sld, |
---|
| 20 | double solvent_sld) |
---|
| 21 | { |
---|
| 22 | |
---|
[e7678b2] | 23 | const double cont = sld-solvent_sld; |
---|
| 24 | const double qr = q*radius; |
---|
| 25 | //const double crossSect = (2.0*J1(qr)/qr)*(2.0*J1(qr)/qr); |
---|
[43b7eea] | 26 | const double crossSect = sas_J1c(qr); |
---|
[e7678b2] | 27 | double flex = Sk_WR(q,length,kuhn_length); |
---|
| 28 | flex *= crossSect*crossSect; |
---|
| 29 | flex *= M_PI*radius*radius*length; |
---|
| 30 | flex *= cont*cont; |
---|
| 31 | flex *= 1.0e-4; |
---|
| 32 | return flex; |
---|
[f94d8a2] | 33 | } |
---|
| 34 | |
---|
| 35 | double Iq(double q, |
---|
| 36 | double length, |
---|
| 37 | double kuhn_length, |
---|
| 38 | double radius, |
---|
| 39 | double sld, |
---|
| 40 | double solvent_sld) |
---|
| 41 | { |
---|
| 42 | |
---|
[e7678b2] | 43 | double result = flexible_cylinder_kernel(q, length, kuhn_length, radius, sld, solvent_sld); |
---|
| 44 | return result; |
---|
[f94d8a2] | 45 | } |
---|
| 46 | |
---|
| 47 | double Iqxy(double qx, double qy, |
---|
| 48 | double length, |
---|
| 49 | double kuhn_length, |
---|
| 50 | double radius, |
---|
| 51 | double sld, |
---|
| 52 | double solvent_sld) |
---|
| 53 | { |
---|
[e7678b2] | 54 | double q; |
---|
| 55 | q = sqrt(qx*qx+qy*qy); |
---|
| 56 | double result = flexible_cylinder_kernel(q, length, kuhn_length, radius, sld, solvent_sld); |
---|
[f94d8a2] | 57 | |
---|
[e7678b2] | 58 | return result; |
---|
[f94d8a2] | 59 | } |
---|