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ON THE UV EMISSION FLUX CONTROL FOR SOME METAL-HALIDE LAMPS

M. Cristea1,*

Affiliation

  1. “Politehnica” University of Bucharest, Department of Physics, Splaiul Independentei 313, 060042 Bucharest, Romania

Abstract

The last generation of metal-halide (MH) lamps are very attractive from the lighting point of view and also from other specific applications. In this paper is analyzed the ultraviolet emission of two MH lamps, UVAprint 250 LE and UV Blue-Point, with respect to the power supply. Both of the two lamps can be used in the chemical applications like water de pollutions or desalinization. From this point of view are analyzed the possibility to control the surface polymerization of acrylic acid (AA) on the poly-sulfone (PS) hollow fiber through UV illumination. Was found the UV band where the integral flux variation with the power supply is more sensitive, allowing the control of photo-polymerization layer size trough power illumination and speed of PS hollow fiber in the AA solution. Also, the spectral bands, which can favor the photo-polymerization process for other substances, were found..

Keywords

MH lamps, Photo-polymerization, Hollow fibber, Poly-sulfone, Acrylic acid.

Submitted at: Jan. 21, 2005
Accepted at: Sept. 22, 2005

Citation

M. Cristea, ON THE UV EMISSION FLUX CONTROL FOR SOME METAL-HALIDE LAMPS, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 5, pp. 2443-2449 (2005)