The present invention provides an inductively coupled, magnetically enhanced ion beam source, suitable to be used in conjunction with probe-forming optics to produce an ion beam without kinetic energy oscillations induced by the source. In at least some embodiments, composite medical devices, andor shafts for use therein, that can include a more flexible inner portion and a less flexible outer portion. The display screen of the client computer is partitioned into a browser area, which retains the full functionality of the underlying browser, and advertising area.