Opened 2 years ago
Last modified 7 months ago
#894 new defect
triaxial ellipsoid with circular equator does not match ellipsoid
Reported by: | pkienzle | Owned by: | |
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Priority: | major | Milestone: | SasView 4.3.0 |
Component: | SasView | Keywords: | |
Cc: | Work Package: | SasModels Model Issues |
Description
Comparing ellipsoid with triaxial ellipsoid where the equatorial major and minor axes of the triaxial ellipsoid match the equatorial radius of the ellipsoid yields different results. This is true in SasView 3.1.x as well, for both 1D and 2D models.
Change History (5)
comment:1 Changed 2 years ago by pkienzle
comment:2 Changed 2 years ago by pkienzle
The following gives an alternative formula for the 1-D triaxial ellipsoid:
This gives a result consistent with ellipsoid.
comment:3 Changed 2 years ago by butler
- Work Package changed from SasModels Redesign to SasModels New Model
comment:4 Changed 19 months ago by butler
- Milestone changed from SasView 4.2.0 to SasView 4.3.0
comment:5 Changed 7 months ago by butler
- Work Package changed from SasModels New Model to SasModels Model Issues
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Note: formula for form factor does not match calculation in the triaxial ellipsoid (1D).
Formula inside integral in help says:
Code says: