Specifying the geometryΒΆ
Langmuir supports three probe geometries, with self-descriptive names:
Plane(A)
represents a planar probe with surface areaA
.Cylinder(r, l, lguard=0, rguard=0)
represents a cylindrical probe of radiusr
and lengthl
. The optional argumentslguard
andrguard
may be used to specify the length of the left and right guards, respectively. Setting them tofloat('inf')
orTrue
means that there is an ideal guard.Sphere(r)
represents a spherical probe of radiusr
.
All dimensions are in SI units. Not all models may be able to support all geometries, and only the finite-length model makes use of the guard feature.