  The Recycler Ring at Fermilab uses a barrier rf system for all of its rf
manipulations. In this paper, I will give an overview of historical perspective
on barrier rf systems, the longitudinal beam dynamics issues, aspects of rf
linearization to produce long flat bunches and methods used for emittance
measurements of the beam in the RR barrier rf buckets. Current rf manipulation
schemes used for antiproton beam stacking and longitudinal momentum mining of
the RR beam for the Tevatron collider operation are explained along with their
importance in spectacular success of the Tevatron luminosity performance.
