  An analytic method is presented which allows for the computation of the
self-force for a static particle with a scalar charge in the region of an
ultrastatic spacetime which one can call the long throat. The method is based
on the approximate WKB solution of a radial mode equation for a scalar field.
This field is assumed to be massless, with a coupling $\xi$ to the scalar
curvature is satisfying the condition $\xi>1/8$.
