Changes in / [e220acc:830cf6b] in sasmodels

Location:

sasmodels/models

Files:

• core_shell_ellipsoid.py (modified) (1 diff)
• flexible_cylinder.py (modified) (1 diff)
• unified_power_Rg.py (deleted)
• unified_power_rg.py (added)

sasmodels/models/core_shell_ellipsoid.py

@@ -47 +47 @@
 
 .. In following equation SK changed radius\_equat\_core to R_e
-
 .. math::
     :nowrap:

sasmodels/models/flexible_cylinder.py

@@ -41 +41 @@
     pseudocontinuous limit.
     See equations (13,26-27) in the original reference for the details.
+
+.. note::
+
+    There are several typos in the original reference that have been corrected
+    by WRC [2]. Details of the corrections are in the reference below. Most notably
+
+    - Equation (13): the term $(1 - w(QR))$ should swap position with $w(QR)$
+
+    - Equations (23) and (24) are incorrect; WRC has entered these into
+      Mathematica and solved analytically. The results were then converted to
+      code.
+
+    - Equation (27) should be $q0 = max(a3/(Rg^2)^{1/2},3)$ instead of
+      $max(a3*b(Rg^2)^{1/2},3)$
+
+    - The scattering function is negative for a range of parameter values and
+      q-values that are experimentally accessible. A correction function has been
+      added to give the proper behavior.
+
+
+**This is a model with complex behaviour depending on the ratio of** $L/b$ **and the
+reader is strongly encouraged to read reference [1] before use.**
 
 .. note::