The Philips QL-lamp: Modelling and comparison with experiments
The Philips QL lightsource is a low pressure inductively coupled RF discharge. The main advantage of this system is the fact that it contains no electrodes so that the lifetime is longer. A characteristic feature is that the induction coil with a ferrite core is located at the center of the lamp. The plasma simulation model developed at the Eindhoven University of Technology is used to study the mercury-argon discharge of the QL-system. In the model calculations the electron kinetics is governed by mercury and argon is purely a buffergas, i.e., it determines the transport coefficients. A comparison will be made between the experimental and calculated primary impedance, and radial profiles of electron density and heavy particle temperature. It seems that the calculations are quite sensitive for the data for ionization and radiative losses (escape of the resonant 253.6 nm). With the current model assumptions and data for ionization the calculated results for n{sub e}, T{sub h}, and primary impedance agree within 30% with the experimental results. It is expected that a better agreement is obtained when the effect of diffusion of mercury atoms is taken into account.
- OSTI ID:
- 419779
- Report Number(s):
- CONF-960634-; TRN: IM9706%%323
- Resource Relation:
- Conference: 1996 IEEE international conference on plasma science, Boston, MA (United States), 3-5 Jun 1996; Other Information: PBD: 1996; Related Information: Is Part Of IEEE conference record -- Abstracts: 1996 IEEE international conference on plasma science; PB: 324 p.
- Country of Publication:
- United States
- Language:
- English
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