A simple model of metal-halide arcs
- 14 July 1979
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 12 (7) , 1101-1115
- https://doi.org/10.1088/0022-3727/12/7/014
Abstract
Energy balance calculations have been made of a cylindrical high-pressure LTE discharge which contains small quantities of metal halides with a large excess of mercury. It is assumed that the partial pressures of emitting atoms remain at a constant value throughout the arc, and that the emission coefficient for atoms and ions can be calculated using the Corliss and Bozman (1962) transition probabilities. The model has been used to compare the effects of adding different elements (scandium and iron) and mixtures of elements on the temperature profile, and other properties of metal halide lamps. The self-absorbed radiation of the mercury atoms must be included in order to obtain realistic temperature profiles. It is assumed that for all lines emitted by the added elements, the arc is optically thin.Keywords
This publication has 10 references indexed in Scilit:
- Convection in vertical high-pressure mercury arcsJournal of Applied Physics, 1978
- Atomic transition probabilities for scandium and titanium (A critical data compilation of allowed lines)Journal of Physical and Chemical Reference Data, 1975
- The column of a dc arc burning in a metal halide atmosphereJournal of Applied Physics, 1974
- Elastic and Inelastic Cross Sections for Electron-Hg Scattering from Hg Transport DataPhysical Review A, 1973
- Electron-neutral transport cross section of mercuryJournal of Applied Physics, 1973
- Theoretical properties of several metal halide arcs assuming LTEProceedings of the IEEE, 1971
- Spectral Distributions of Elements in ArcsJournal of the Optical Society of America, 1970
- Characteristics of Radiation-Dominated Electric ArcsJournal of Applied Physics, 1970
- A relaxation method of calculating arc temperature profiles applied to discharges in sodium vaporJournal of Quantitative Spectroscopy and Radiative Transfer, 1969
- The absorption coefficient for slow electrons in mercury vapourProceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character, 1929