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National Repository of Grey Literature 79 records found  beginprevious77 - 79  jump to record: Search took 0.01 seconds. 
Měření čistoty jódu v absorpčních kyvetách pro frekvenční stabilizaci laserů
 Hrabina, Jan ; Petrů, František ; Jedlička, Petr ; Číp, Ondřej ; Lazar, Josef
In the contribution we present a system for measurement of iodine purity by means excitation of a selected strong transition, measurement of induced fluorescence and evaluation by the Stern-Volmer formula. The arrangement is based on a pumping Ar-ion laser tuned to the transition of interest but its linewidth far exceeds the transition. Frequency noise of the laser is effectivelly reduced by monitoring the fluorescence in a second, reference iodine cell and together with monitoring of the laser power enables cancelation of the frequency noise influence which generates errors by demodulating on the absorption profile. The level of the scattered light is subtracted as well. All the measured data are digitally processed and the experiment is fully computer controlled.
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Continuously tunable semiconductor laser with high-coherence generated radiation
 Číp, Ondřej ; Lazar, Josef ; Jedlička, Petr
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Lokalizace "kalibračního" odstřelu v Jakubčovicích a dva místní tektonické jevy v ostravské oblasti
 Růžek, Bohuslav ; Zedník, Jan ; Jedlička, Petr ; Holub, Karel ; Rušajová, Jana ; Novotný, O.
Five temporary seismic stations were put into operation in the region delimited by the towns Ostrava-Opava-Hranice na Moravi. These stations are primarily operated in order to collect data from quarry blasts and mining induced events. Corresponding recordings will be used for the velocity model inversion. A strong quarry blast in Jakubčovice was recorded by 8 stations and interpreted
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National Repository of Grey Literature : 79 records found   beginprevious77 - 79  jump to record:
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