Browsing by All Authors "Mamedov, E. K."

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    Formation of defects in vitreous Si02 under influence gamma-neutron (reactor) radiations
    (Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Mamedov, E. K.; Bölüm Yok
    The vitreous dioxide of silicon (v-SiO2) is one of irreplaceable materials of constructional optics and constantly is in the center of attention of researchers. Its unique properties - high temperature of fusion, chemical stability, low dielectric losses, etc., have led to to wide use in various industries. Special interest is represented its optical and paramagnetic properties, change of these properties at operation v-SiO2 in fields of radiation, the nature and a structure of point defects.
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    Radiating optical stability of glass fiber waveguides
    (Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Mamedov, E. K.; Bölüm Yok
    Azerbaijan National Academy of Science, Institute of Radiation Problems, Az 1143 In connection of importance of application vitreous Si02 (v-Si02) in the nuclear industry do not weaken attempts to receive this material with high stability to influence of radiation. The description of a method of reception of the preliminary form of glass possessing optical stability to action of radiation for manufacturing a glass fiber waveguides is submitted in work. On the basis of glass fiber waveguides various types of the gauges - acoustic, magnetic, temperature, gauges of pressure and etc., are developed. Optical fiber waveguides are used for transfer of a signal both on short and on a long distance. Transfer of a signal on short distances is carried out with use of fiber waveguides with losses much exceeding losses in waveguides on a long distance. If to accept reguirement showed to optical material for optical fibre communication lines that loss of light on working length of a wave should be less than 10 db/km for long lines and less than 50 db/km for short lines which length makes 100-300 m [1]. However, if fiber glass is maintained in conditions of radiating influence that it results in essential change of its optical characteristics and causes the raised losses of an information signal. So for example fiber glass with a core from V-Sİ02 and an environment from V-SiO2 + V-B2O3 at λ=0,82µm, value absorption coefficient α ~ 11 db/km and at a dose of an irradiation ~10(3) rad α~1000 db/km [2]. From these data follows that in a zone of an irradiation it is possible to maintain only fiber glasses subjected by rather low doses of radiations.
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    Radioactive wastes; some their questions of immobilization and opportunites of use
    (Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Mamedov, E. K.; Bölüm Yok
    Development of atomic engineering is indissolubly accompanied by accumulation of huge quantity of radioactive waste (RW), in this connection there are problems as with processing RW in firm stable forms and creation of new places for their placing. In a number of the countries at the state level the specialized organizations carry out gathering, transportation and placing RW in various mountain developments, rocky breeds, shafts and etc. Alongside with it, also it is known, about use of radioactive waste products as sources of radiation [1, look work 2 and the references in it]. Radiation from radioactive substance caused a radioluminescence in crystallophosphorus and light radiation was absorbed by the photoelectronic converter with formation of a current. Here we also shall consider one of variants of use of radiation from RW with the purpose of manifacture of the electric power. However the converter of radiation from RW will be luminescing glass with optical stability action of radiation. Hence basic elements of a design of the device will be immobilized RW and optical steady glass.
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    The control of a dose of radiation over use of glass optical fiber waveguides
    (Azerbaijan National Academy of Sciences Institute of Radiation Problems ve Turkish Atomic Energy Authority, 2006) Mamedov, E. K.; Bölüm Yok
    In radiating physics, chemisry, medicine, the nuclear industry, radiating technology, etc., there is a necessity of measurement of doses radiations in extremely wide range of their values. So for example, in radiating physics, chemistry and radiating technology rather big doses in an interval ~ 10 ÷10(8) Gy are used, where as in dosimetiy of the person where it is necessary to deal with questions biological protection, small doses in a range ~ 10(-6) ÷10(-2) Gy are used.