This RF powered lamp system is a reliable and maintenance-free high intensity source of deep VUV emissions between 116 and 200 nm. This source mounts to a 4.5-inch CF flange for easy connection to a high-vacuum system. The lamp is re-entrant to allow optimum positioning. VUV fluxes greater than 100 milliwatts/sterad are delivered through the MgF2 window for vacuum applications such as photoionization TOF mass spectroscopy. Lamp bulbs are interchangeable for easy replacement. The temperature-controlled high-speed fan eliminates the need for water cooling. Normally this source will operate with either a Krypton or Xenon Bulb. These bulbs are interchangeable and other bulbs and or fill pressures are available on a custom basis.