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The not weakening interest to excilamps is bound to a possibility of reception of power impulses in the UV-field of aspectrum with significant average power. These experimental compact models of excilamps are designed for differentapplications in the field of medicine, biology, spectroscopy and so on. The lamps are executed on the basis of serial do-mestic elements and blocks of own production. The lamps differ by compactness and simplicity of construction.Keywords: glow discharge, excilamps, XeCl-lalmps, barrier discharge, average power. 1. INTRODUCTION Excim r lamps (sources of UV - and VUV-radiation) - one of sources of spontaneous radiation in which radiation ofexcim r molecules is used. As a class of sources of radiation they have appeared recently. Feature of these molecules istheir stability in the electron-excited states and absence of the basic state [1, 2].The basic difference of excim r lamps from luminescent mercury lamps is the spectrum of radiation. In a mercury lampthespectrumofradiationconsistsinavisiblepartofaspectrumandfromUV-areas.Inexcilampsupto80%andmorethe general power of radiation can be concentrated in rather narrow (5-10 nanometers on half-width) band of radiation ofa corresponding molecule. Thus specific power of radiation exceeds values, characteristic for lamps of low pressure onresonant transitions of atoms. Besides at excitation of multi-component gas mixtures it is simultaneously possible to re-ceive radiation with comparable intensity on two and more molecules.Advantages of excilamps from the point of view of their applicatio n make the large energy of a photon (3,5-10 eV), anarrow band of radiation, rather high specific power of radiation, an opportunity of scaling and a choice of any geometryof a radiating surface. Separately it is necessary to note absence of mercury in excilamps. It provides advantage of ex-cilamps in comparison with widely used, but ecologically dangerous mercury-containing lamps. Excilamps as newsources of powerful UV - and VUV-radiation can find wide practical application. Now excilamps are used in biology(for acceleration of growth of plants), medicine, photochemistry, microelectronics, for clearing and updating of proper-ties of a surface, for polymerization of varnishes and paints, in technologies of disinfecting of industrial wastes and inother fields . It became possible due to the significant progress in understanding of the processes, which occur in opticalexcilamps active medium, and in creation of samples, suitable for practical use.Unfortunately, the given theme is not completely investigated yet. There are difficulties in definition of optimum operat-ing conditions of excilamps, existing practical samples of excilamps possess small efficiency. In most cases for techno-logical applications mercury lamps are used, and the further investigation of excilamps will allow find optimum parame-ters and design decisions for the greater efficiency and practical utilization.The purpose of the given work consists in development and creation of simple electro-discharge excilamps and investi-gation of their spectral, power and time characteristics. The basic attention is given to an active medium on halide ofnoble gases with excitation by the different kinds of discharge. |
