The invention described herein discloses a method and apparatus for controlling the Hg vapor pressure within a lamp. This is done by establishing and controlling two temperature zones within the lamp. One zone is colder than the other zone. The first zone is called the cold spot. By controlling the temperature of the cold spot, the Hg vapor pressure within the lamp is controlled. Likewise, by controlling the Hg vapor pressure of the lamp, the intensity and linewidth of the radiation emitted from the lamp is controlled.
The present invention is directed to a method of eliminating the cold spot zones presently used on Hg.sup. 196 isotope separation lamps and filters by the use of a mercury amalgams, preferably mercury - indium amalgams. The use of an amalgam affords optimization of the mercury density in the lamp and filter of a mercury enrichment reactor, particularly multilamp enrichment reactors. Moreover, the use of an amalgam in such lamps and/or filters affords the ability to control the spectral line width of radiation emitted from lamps, a requirement for mercury enrichment.
Robert Simpson's comprehensive volume covers all aspects of lighting control systems. It starts with two foundation chapters outlining the basics of electricity, light and electronics as they apply to lighting control. It then reviews all current artificial lightsources, and comments on their suitability for control. A section on lighting control components covers electronic and electromagnetic dimmers, ballasts and transformers. The next section reviews lighting control systems, including those for stage and entertainment, architectural applications, energy management and building control; and includes a chapter on control signals protocols. The final part is an extensive applications review, fully illustrated, covering everything from hotels and cruise ships to homes and churches; and taking in offices, factories, simulators, trains and planes on the way. Lighting Control: technology and applications brings together information not otherwise available from a single source. It is intended as a training resource within the lighting industry, both for those completely new to the subject, and for those coming to it from another technical field. It will also be useful for lighting designers, consulting engineers and electrical contractors as a reference book covering current and emerging lighting control techniques - with special emphasis on new light sources and new digital control standards. Information, case histories and illustrations for the book have been provided by many leading lighting companies and organizations in North America and Europe.
Held every three years, The International Symposia on the Science and Technology of Light Sources (LS) provide a unique forum for the international community of engineers, scientists, research organizations, and academia from the lighting industry. In Light Sources 2004, leaders in their respective fields discuss the latest findings and exciting de
