Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Laser induced phenomena in .gamma.-glycine crystals

Wojciechowski A., Alzayed N., Kityk I., Berdowski J., Tylczyński Z.

Optica Applicata

2010

Vol. 40, nr 4

1007--1012

The photoinduced changes of absorption within the spectral range 200-800 nm and optical second harmonic generation caused by illumination by the cw second harmonic generation of the Nd:YAG laser (? = 532 nm) and power about 400 mW were investigated. We have established that increasing the time of illumination by the second harmonic generation of the Nd:YAG laser leads to the occurrence of one strong spectral minimum at 319 nm and another less strong at 420 nm. Increasing the time of illumination leads to a slight red spectral shift of the photoinduced minima. The absence of a substantial increase in temperature indicates that the principal role is played here by the photooccupation of the trapping levels. The effect is observed in a wide spectral range of the incident photoinduced angles, however, the beam should possess a good Gaussian-like form and to be space homogenous. The results were reproduced with precision up to 3-4% which was achieved due to additional stabilization of the photoinduced laser power by double control of the power.

Dielectric properties of TEA-CoCl2Br2 complex

Lach G., Laskowski Ł., Kityk I., Tkaczyk S. W., Świątek J., Kapustianyk V., Rudyk V.

Scientific Bulletin. Physics / Lodz University of Technology

2006

Vol. 26

115-121

The dielectric properties of TEA-CoCl2Br2 nanocrystallites incorporated into the polymethylmethacrylate matrix within the spectral range of [wzór] Hz in the temperature range of 90K ÷ 300 K were investigated. Considerable difference of the dielectric spectra of the complex compared to the bulk crystal and to the pure polymer matrix was observed. The phenomenon of the "negative capacity" has been found. Its dependence on the mass concentration of modifying agent was investigated and explained within the appropriate molecular model.

Celem pracy było zbadanie właściwości dielektrycznych kompleksu tetraetyloamono-dibromo-dichloro- kobaltu (TEACoCl2Br2) osadzonego w matrycach z polimetakrylanu metylu (PMMA). Zaobserwowano interesujące zjawiska relaksacyjne o charakterze rezonansowym (związane z ujemną rzeczywistą częścią przenikalności), występujące jedynie w próbkach złożonych z matrycy i TEACoCl2Br2.

Examination of integral spectra of indium bromide dielectric function

Kolinko M. I., Bovgyra O. V., Nevidomskyy A. H., Kityk I., Brąqiel P., Piasecki M.

Prace Naukowe. Chemia / Wyższa Szkoła Pedagogiczna w Częstochowie

2001

Vol. 5

143--154