  We calculate the sink strength of dislocations and toroidal absorbers using
Object Kinetic Monte Carlo and compare with the theoretical expressions. We get
good agreement for dislocations and loop-shaped absorbers of 3D migrating
defects, provided that the volume fraction is low, and fair agreements for
dislocations with 1D migrating defects. The master curve for the 3D to 1D
transition is well reproduced with loop-shaped absorbers and fairly well with
dislocations. We conclude that, on the one hand, the master curve is correct
for a wide range of sinks and that, on the other, OKMC techniques inherently
take correctly into account the strengths of sinks of any shape, provided that
an effective way of appropriately inserting the sinks to be studied can be
found.
