Changeset b7c2fce in sasmodels
 Timestamp:
 Feb 17, 2016 3:02:54 PM (7 years ago)
 Branches:
 master, core_shell_microgels, costrafo411, magnetic_model, release_v0.94, release_v0.95, ticket1257vesicleproduct, ticket_1156, ticket_1265_superball, ticket_822_more_unit_tests
 Children:
 19b6d28
 Parents:
 c612162
 File:

 1 edited
Legend:
 Unmodified
 Added
 Removed

sasmodels/models/elliptical_cylinder.py
rc612162 rb7c2fce 22 22 23 23 .. math:: 24 F(\mathbf{q},\alpha,\psi)=2\frac{J_1(a)\sin(b)}{ab} 24 F(\mathbf{q},\alpha,\psi)=2\frac{J_1(a)\sin(b)}{ab} 25 25 \\ 26 26 a = \mathbf{q}\sin(\alpha)\left[ r^2_{major}\sin^2(\psi)+r^2_{minor}\cos(\psi) \right]^{1/2} … … 28 28 b=\mathbf{q}\frac{L}{2}\cos(\alpha) 29 29 30 and the angle bigpsi is defined as the orientation of the major axis of the ellipse with respect to the vector *q*\ . 30 and the angle bigpsi is defined as the orientation of the major axis of the ellipse with respect to the vector $\vec q$ . 31 The angle $\alpha$ is the angle between the axis of the cylinder and $\vec q$. 31 32 32 33 … … 129 130 @param length: Length of the cylinder 130 131 """ 131 r = math.sqrt(r_minor * r_minor * r_ratio)132 ddd = 0.75 * r * (2 * r * length + (length + r) * (length + pi * r))132 radius = math.sqrt(r_minor * r_minor * r_ratio) 133 ddd = 0.75 * radius * (2 * radius * length + (length + radius) * (length + pi * radius)) 133 134 return 0.5 * (ddd) ** (1. / 3.) 134 135
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