Photodetachment of Relativistic Ions

A series of fundamental laser ion beam experiments has been made feasible by the high-quality, relativistic (ß = 0.842) H- ion beam available at the Clinton P. Anderson Meson Physics Facility (LAMPF). The relativistic Doppler shift of the light from an ordinary ultraviolet laser provides what is, in effect, a continuously tunable vacuum-ultraviolet laser in the rest frame of the moving ions. The Lorentz transformation of a modest laboratory magnetic field provides an electric field of several megavolts/centimeter. The latest results of our photo-detachment work with H- beams and our spectroscopic work with H0 beams are presented. Our plans for future work are discussed.