Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "Kowalska, J.E." wg kryterium: Autor

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-11 z 11
    Tytuł:
    Large area scintillation detector for dosimetric stand with improved light collection
    Autorzy:
    Machaj, B.
    Mirowicz, J.
    Kowalska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/147646.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    large area scintillator
    light collection
    radioactive contamination
    Opis:
    In order to improve scintillation light collection from a thin plastic scintillator, the shape of a light reflector, and a new concept of extraction scintillation light trapped inside the scintillator were investigated. The trapped scintillation light is extracted from the scintillator by cutting the scintillator into two pieces with the edges machined at an angle of 45 centi grade and polished. Considerable improvement of detection efficiency can be achieved when the extracted and the escape scintillation light are collected together. Prototype of such a scintillation probe was constructed and investigated.
    Źródło:
    Nukleonika; 2011, 56, 4; 317-321
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Performance of a plastic scintillator and GM pancake tubes as alpha and beta contamination detectors in dosimetric stand
    Autorzy:
    Machaj, B.
    Mirowicz, J.
    Kowalska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/147069.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    dosimetric stand
    detection system
    GM counter
    plastic scintillator
    Opis:
    A model of detection probe with a plastic scintillator (230 × 105 × 1 mm3) with a ZnS(Ag) layer at the top, and a model with six pancake Geiger-Müller (GM) counters were investigated as alpha particles (Am-241) and beta radiation (Sr-90) contamination detection probes at a dosimetric stand. A detection probe, 166 × 104 mm2 of active area, with a proportional counter was also investigated for comparison. The scintillation probe showed a higher alpha detection efficiency and a comparable beta detection efficiency with respect to the probe containing the proportional counter. The GM probe shoved a higher alpha detection efficiency, and a lower beta detection efficiency than the proportional counter probe. Detection efficiency of the scintillation probe strongly depends on the distance from the photomultiplier tube (PMT) photocathode. Active area of the GM probe of all counters constitutes approximately 50% of its measuring area.
    Źródło:
    Nukleonika; 2011, 56, 1; 53-56
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Industrial diagnostics system using gamma radiation
    Autorzy:
    Jakowiuk, A.
    Modzelewski, Ł.
    Pieńkos, J.
    Kowalska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/147150.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    diagnostic system
    gamma radiation
    Opis:
    During the operation of large industrial installations, a very important task is to maintain the proper technical state. In the event of an emergency, it is vital to locate the place of occurrence as soon as possible. In solving this type of problem, it often helps to apply the methods of measurement associated with ionizing radiation. One of these methods is the gamma scanning. The purpose of this type of measurement is the detection and localization of disturbance of technological processes which may result in incorrect decomposition the flowing medium and workpiece (sediments, congestion) as well as damage to the internal constructions. A particularly: (i) preventive diagnosis – early detection of installation failure; (ii) rationalization of repairs and renovations – to determine the need to take or not to take remedial action; (iii) quick and precise installation inspections – to gain knowledge of the technical condition and technological installations; (iv) indication of worn parts and posing a threat – diagnostics of the technical condition installation; (v) forecasting the useful lifetime of equipment.
    Źródło:
    Nukleonika; 2015, 60, No. 3, part 2; 633-636
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Metrological features of a beta absorption particulate air monitor operating with wireless communication system
    Autorzy:
    Jakowiuk, A.
    Urbański, P.
    Świstowski, E.
    Machaj, B.
    Pieńkos, J.
    Kowalska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/146846.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    ambient air
    beta-ray absorption
    particulate matter
    wireless communication
    Opis:
    A system for measurements of particulate matter in the ambient air, employing beta absorption instrument AMIZ-2007 with wireless communication facilities based on GPRS technology, is presented. Uncertainty of measurements caused by the counting statistics was analyzed and it was found that at least 3 h of sampling time is needed to achieve coefficient of variation lower than 20% for the average concentration of particulate matter in the ambient air exceeding 10 μg/m3. Application of a C-14 beta ray source instead of Pm-147 improves sensitivity of the measurement ca. two times. Some results of on-line operation of the system with PM10 and PM2.5 samplers are also shown.
    Źródło:
    Nukleonika; 2008, 53, suppl. 2; 37-42
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wireless system for radiometric measurements
    Autorzy:
    Jakowiuk, A.
    Pieńkos, P. J.
    Kowalska, E.
    Filipiak, P.
    Świstowski, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/146860.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    radiometric probes
    radon concentration measurements
    wireless communication
    Opis:
    Wireless system for radiometric measurements contains probes, for gamma radiation measurements and other probes for radon concentration measurements in air and water. The probes have the form of droplet-tight cylinders powered from a local battery. Measuring data collecting unit, based on a portable computer, communicates directly with the probes in a wireless manner using the WiFi communication network, or through the internet using mobile phone GSM network. Serial port wire connection is also possible. The local battery ensures at least 14 days of continuous operation of the probes. For long term measurements, the probes can also be powered from solar panels. Construction and operation of the probes are described. Results of scintillation probes investigation are given. Detection efficiency of the developed probes is comparable with the laboratory probes offered in our country.
    Źródło:
    Nukleonika; 2012, 57, 4; 637-641
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Laboratory automatic measuring system for gamma specimens
    Autorzy:
    Jakowiuk, A.
    Filipiak, P.
    Bartak, J.
    Pieńkos, P.
    Kowalska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/146868.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    gamma counter
    radioimmunoassay (RIA)
    immunoradiometric assay (IRMA)
    Opis:
    LG Gamma Counter is designed for low activity measurement of the radioactive isotope iodine 125I in liquid or solid samples during radioimmunoassay (RIA) and immunoradiometric assay (IRMA) in small or medium size clinic laboratories. Apart from RIA and IRMA programmed procedures, a measurement of small activity gamma samples is possible. The well scintillator NaI(Tl) is used as radiation detector for the isotope 125 I in the measuring channel, the well dimensions fi being 17 x 38 mm. Gamma Counter was adapted for measuring radioactivity of single samples. The counter is equipped with an automatic system allowing transportation of examined samples to a scintillator well. The gauge is based on an integrated computer which is working under the control of Windows CE and is equipped with special software allowing for setting measurement parameters and communication with an external computer. The measured sample is placed inside the scintillator well either by an automatic sample feeder or manually. The pulses from a photomultiplier tube after amplification and shaping in pulse amplifiers are counted in the window of a single channel analyser by a programmable pulse counter under the control of microprocessor system. The measured count rate is the measure of activity of the assayed sample. Expected count rate error due to unstable operation of amplification is lower than 1%.
    Źródło:
    Nukleonika; 2012, 57, 4; 633-635
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wettability of carbon and silicon carbide ceramics induced by their surface alloying with Zr and Cu elements using high intensity pulsed plasma beams
    Autorzy:
    Barlak, M.
    Piekoszewski, J.
    Sartowska, B.
    Waliś, L.
    Starosta, W.
    Kierzek, J.
    Pochrybniak, C.
    Kowalska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/146789.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    wettability
    ceramic-metal joints
    high intensity pulsed plasma beams (HIPPB)
    Opis:
    Joining of metals with ceramics is very difficult, because properties of these materials are very different. One of the methods of improving mechanical strength of the obtained joints is the introduction of an additional interlayer to the joining area. This paper presents the Zr and Cu-rich layers in C and SiC substrates obtained using the high intensity pulsed plasma beams method. The results of Zr plasma modifications were beneficial and similar to the results obtained in previous works with Ti. The measured contact angles were below 90 centigrade. The results with Cu plasma were unfavourable with contact angles close to 180 centigrade. Apart from the sessile-drop test and to extend the range of analysis, the investigated samples were examined by stereoscopic optical microscopy (OM), scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDXS), grazing angle X-ray diffraction (GXRD), and Rutherford back scattering (RBS) measurements.
    Źródło:
    Nukleonika; 2012, 57, 4; 477-483
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heat load and deuterium plasma effects on SPS and WSP tungsten
    Autorzy:
    Vilémová, M.
    Matějíček, J.
    Nevrlá, B.
    Chernyshova, M.
    Gasior, P.
    Kowalska-Strzeciwilk, E.
    Jäger, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/146910.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    tungsten
    fusion
    heat loading
    irradiation
    bubbles
    surface damage
    Opis:
    Tungsten is a prime choice for armor material in future nuclear fusion devices. For the realization of fusion, it is necessary to address issues related to the plasma–armor interactions. In this work, several types of tungsten material were studied, i.e. tungsten prepared by spark plasma sintering (SPS) and by water stabilized plasma spraying (WSP) technique. An intended surface porosity was created in the samples to model hydrogen/ helium bubbles. The samples were subjected to a laser heat loading and a radiation loading of deuterium plasma to simulate edge plasma conditions of a nuclear fusion device (power density of 108 W/cm2 and 107 W/cm2, respectively, in the pulse intervals up to 200 ns). Thermally induced changes in the morphology and the damage to the studied surfaces are described. Possible consequences for the fusion device operation are pointed out.
    Źródło:
    Nukleonika; 2015, 60, 2; 275-283
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Studies of plasma interactions with tungsten targets in PF-1000U facility
    Autorzy:
    Ladygina, M. S.
    Skladnik-Sadowska, E.
    Zaloga, D. R.
    Sadowski, M. J.
    Kubkowska, M.
    Kowalska-Strzeciwilk, E.
    Krawczyk, N.
    Paduch, M.
    Miklaszewski, R.
    Garkusha, I. E.
    Powiązania:
    https://bibliotekanauki.pl/articles/147524.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    plasma-surface interaction
    plasma streams
    tungsten
    plasma focus
    PF-1000U
    Opis:
    This paper presents results of experimental studies of tungsten samples of 99.95% purity, which were irradiated by intense plasma-ion streams. The behaviour of tungsten, and particularly its structural change induced by high plasma loads, is of great importance for fusion technology. The reported measurements were performed within a modifi ed PF-1000U plasma-focus facility operated at the IFPiLM in Warsaw, Poland. The working gas was pure deuterium. In order to determine the main plasma parameters and to study the behaviour of impurities at different instants of the plasma discharge, the optical emission spectroscopy was used. The dependence of plasma parameters on the initial charging voltage (16, 19 and 21 kV) was studied. Detailed optical measurements were performed during interactions of a plasma stream with the tungsten samples placed at the z-axis of the facility, at a distance of 6 cm from the electrode outlets. The recorded spectra showed distinct WI and WII spectral lines. Investigation of a target surface morphology, after its irradiation by intense plasma streams, was performed by means of an optical microscope. The observations revealed that some amounts of the electrodes material (mainly copper) were deposited upon the irradiated sample surface. In all the cases, melted zones were observed upon the irradiated target surface, and in experiments performed at the highest charging voltage there were formed some cracks.
    Źródło:
    Nukleonika; 2016, 61, 2; 149-153
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of tungsten surface interaction with plasma streams at DPF-1000U
    Autorzy:
    Ladygina, M. S.
    Skladnik-Sadowska, E.
    Zaloga, D. R.
    Malinowski, K.
    Sadowski, M. J.
    Kubkowska, M.
    Kowalska-Strzeciwilk, E.
    Paduch, M.
    Zielinska, E.
    Miklaszewski, R.
    Garkusha, I. E.
    Gribkov, V. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/147638.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    DPF-1000U
    electron density
    gas puffing
    plasma stream
    tungsten
    Opis:
    In this note experimental studies of tungsten (W) samples irradiated by intense plasma-ion streams are reported. Measurements were performed using the modified plasma focus device DPF-1000U equipped with an axial gas-puffing system. The main diagnostic tool was a Mechelle®900 optical spectrometer. The electron density of a freely propagating plasma stream (i.e., the plasma stream observed without any target inside the vacuum chamber) was estimated on the basis of the half-width of the Dβ spectral line, taking into account the linear Stark effect. For a freely propagating plasma stream the maximum electron density amounted to about 1.3 × 1017 cm–3 and was reached during the maximum plasma compression. The plasma electron density depends on the initial conditions of the experiments. It was thus important to determine first the plasma flow characteristics before attempting any target irradiation. These data were needed for comparison with plasma characteristics after an irradiation of the investigated target. In fact, spectroscopic measurements performed during interactions of plasma streams with the investigated W samples showed many WI and WII spectral lines. The surface erosion was determined from mass losses of the irradiated samples. Changes on the surfaces of the irradiated samples were also investigated with an optical microscope and some sputtering and melting zones were observed.
    Źródło:
    Nukleonika; 2015, 60, 2; 293-296
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    High - temperature oxidation resistance in yttrium implanted stainless steel
    Autorzy:
    Barlak, M.
    Piekoszewski, J.
    Werner, Z.
    Sartowska, B.
    Waliś, L.
    Starosta, W.
    Kierzek, J.
    Kowalska, E.
    Wilhelm, R. A.
    Pochrybniak, C.
    Woźnica, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/146785.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    high-temperature oxidation resistance
    ion implantation
    yttrium
    Opis:
    Austenitic AISI 304, 316L and ferritic 430 stainless steels were implanted with yttrium to fluences ranging between 1 x 1015 and 5 x 1017 ions/cm2. The samples were subjected to oxidation in air at a temperature of 1000 centigrade for a period of 100 h and next examined by stereoscopic optical microscopy (OM), scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDX) and Rutherford back scattering spectrometry (RBS). The results obtained with the use of ion implantation are discussed.
    Źródło:
    Nukleonika; 2012, 57, 4; 473-476
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-11 z 11

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies