An Intense Pulsed Ion Neutral Source (IPINS) is being developed for injection into a mirror confinement experiment. The ion source is based on the reflex triode principle. The parameters achieved in current small-scale experiments are pulse duration 1 ..mu..s, beam energy 80 keV, and ion current density approximately 0.2 kA/cm/sup 2/. Beam neutralization using thin carbon foils is under investigation.