Simulation of the high-pressure mercury discharge lamp during the middle phase of start-up (medium mercury pressure)

N. Bashlov, G. Zissis, K. Charrada, M. Stambouli, V. Milenin, N. Timofeev

Результат исследований: Научные публикации в периодических изданияхстатья

10 Цитирования (Scopus)

Аннотация

This paper deals with the modelling of the medium pressure Hg and Hg-Ar positive column (Hg pressure range 5-350 Torr). The aim of this work is to simulate, in a first approximation, the middle phase of the Hg high-pressure lamp warm-up. In this approach, the main assumption is that time evolution of the discharge can be divided into a succession of stationary sub-phases characterized by the Hg partial pressure. Thus, we present here a self-consistent steady-state collisional-radiative model describing the middle sub-phase. This model includes volume recombination of Hg atomic and molecular ions, as well as several atom-atom inelastic scattering mechanisms. Calculations are carried out for both pure Hg and Hg-Ar discharges. Our results, which are in good agreement with experimental data from the literature, confirm that plasma thermalization occurs in the middle start-up phase (electron and gas temperatures become equal during this phase). Furthermore, this simulation shows the importance of different elementary processes, like atom-atom inelastic scattering, for the medium pressure plasma description. In fact, these mechanisms cannot be neglected until LTE conditions are reached.

Язык оригиналаанглийский
Страницы (с-по)494-503
Число страниц10
ЖурналJournal of Physics D: Applied Physics
Том27
Номер выпуска3
DOI
СостояниеОпубликовано - 14 мар 1994

Предметные области Scopus

  • Электроника, оптика и магнитные материалы
  • Физика конденсатов
  • Акустика и ультраакустика
  • Поверхности, слои и пленки

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