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    Wyświetlanie 1-5 z 5
    Tytuł:
    Dense Plasma Focus as a powerful source of monochromatic X-ray radiation
    Autorzy:
    Dubrovsky, A.
    Gribkov, V.
    Ivanov, Y.
    Karpiński, L.
    Orlova, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/147444.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    dense plasma focus (DPF)
    X-ray generation
    X-ray dosimetry
    exposure dose
    absorbed dose
    Opis:
    A review of some experimental results obtained using the dense plasma focus (DPF) device PF-1000 is presented. The copper Ka1,2 radiation line generated by DPF in the case of device anode made of copper was the main object of this study. The predominance of this characteristic radiation over other kinds of radiation in the DPF X-ray spectrum is shown. A brief description of a new DPF 6.0 device as well as a radioenzymology experiment carried out within this device is presented.
    Źródło:
    Nukleonika; 2006, 51, 1; 21-28
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    0.2-kJ and 2-kJ high rep rate Dense Plasma foci : their design, technology, and applications
    Autorzy:
    Dubrovsky, A. V.
    Gribkov, V. A.
    Ivanov, Y. P.
    Lee, P.
    Lee, S.
    Liu, M.
    Samarin, V. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/146546.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    dense plasma focus (DPF)
    DPF installation
    miniature focus chamber
    soft and hard X-ray radiation
    Opis:
    The paper presents various designs of several medium and small size Dense Plasma Focus (DPF) chambers intended for numerous applications, a description of technologies used in these facilities, and some results reached with these devices by using a number of diagnostic techniques. In present experiments the DP foci have been used mainly as an X-ray source. We discuss here how it is possible to satisfy absolutely new and very strict demands on the construction and technology for the devices to be eventually applied in science and industry. Between these characteristics there are a high repetition rate (typically 1…15 Hz) and a long lifetime (over 1 million shots). Their switching elements, a collector and chambers must withstand a high quasi-continuous heat load (up to 100 kW). High energy density in the central part of the chamber anode and the necessity to provide a channel for radiation extraction demanded a special construction and specific materials implementation in this region. Their X-ray spectrum should be tuned. They have to operate with different working gases and preferably in a wide range of pressures. All these points are discussed in this report. Capabilities of the described techniques are illustrated by results of the recent experimental studies carried out with facilities located at the Nanyang Technological University (NX1) as well as at the Lebedev Physical Institute (PF-0.2).
    Źródło:
    Nukleonika; 2001, 46, suppl. 1; 107-111
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental study of a powerful energy flow effect on materials in PF-1000 installation
    Autorzy:
    Borowiecki, M.
    De Chiara, P.
    Dubrovsky, A. V.
    Dyomina, E. V.
    Gribkov, V. A.
    Ivanov, L. I.
    Maslyaev, S. A.
    Mezzetti, F.
    Miklaszewski, R.
    Pimenov, V. N.
    Pizzo, L.
    Scholz, M.
    Szydlowski, A.
    Ugaste, Y. E.
    Volobuev, I. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/148824.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    dense plasma focus (DPF)
    irradiation
    plasma jet
    shock wave
    test specimen
    Opis:
    The report describes some of the results obtained in an experimental study of the impact of a powerful plasma stream and a fast ion beam generated in a PF-1000 device on different materials perspective for the use in radiation loaded parts of pulsed plasma installations. Investigations were done during and after the interaction processes. It is shown that in case of irradiation of samples only by high power flux density plasma streams the effect of detachment still preserved. At the same time a low power flux density high-energy ion beam plays an important role in the process of saturation of the irradiated material by hydrogen.
    Źródło:
    Nukleonika; 2001, 46, suppl. 1; 117-122
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    PF-6 an effective plasma focus as a source of ionizing radiation and plasma streams for application in material technology, biology and medicine
    Autorzy:
    Gribkov, V.
    Dubrovsky, A.
    Scholz, M.
    Jednorog, S.
    Karpiński, L.
    Tomaszewski, K.
    Paduch, M.
    Miklaszewski, R.
    Pimenov, V.
    Ivanov, L. I.
    Dyomina, E. V.
    Maslyaev, S. A.
    Orlova, M. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/147424.pdf
    Data publikacji:
    2006
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    dense plasma focus (DPF)
    ion beam
    plasma beam
    X-ray beams
    surface damage
    microlithography
    radioenzymology
    positron emission tomography (PET)
    Opis:
    A review of results on the design and operation of the new efficient Dense Plasma Focus device PF-6 of medium size (transportable) having bank energy of ca. 7 kJ and possessing a long lifetime is presented. New data on the interaction of the pulsed fast ion beams and dense plasma streams generated at this apparatus with various materials are given. These results are compared with the analogous information received at the biggest facility PF-1000. It is shown that it is possible to have about the same power flux density (in the range of 105 109 W/cm2) in both devices however in different areas. Doses of soft X-rays produced by the device within the resists for the goals of microlithography and micromachining appear to be several times less that it is with the conventional X-ray tube. In biological application of this device, medium- and hard-energy X-rays are exploited in the field of radioenzymology. It was found that the necessary dose producing activation/inactivation of enzymes can be by several orders of magnitude lower if used at a high-power flux density in comparison with those received with isotope sources. In medicine, short-life isotope production for the goals of the positron emission tomography (medicine diagnostics) is possible by means of the fast ions generated within DPF. All these experiments are discussed in the framework of pulsed radiation physics and chemistry in its perfect sense thereto the criteria are formulated.
    Źródło:
    Nukleonika; 2006, 51, 1; 55-62
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of powerful pulses of hydrogen plasma upon materials in PF-1000 device
    Autorzy:
    Pimenov, V.
    Gribkov, V.
    Dubrovsky, A.
    Mezzetti, F.
    Scholz, M.
    Ugaste, U.
    Dyomina, E.
    Ivanov, L.
    Maslyaev, S.
    Miklaszewski, R.
    Borowiecki, M.
    De Chiara, P.
    Pizzo, L.
    Szydlowski, A.
    Volobuev, I. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/147096.pdf
    Data publikacji:
    2002
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    dense plasma focus (DPF)
    ion beam
    irradiation
    plasma jet
    surface damage
    test specimen
    Opis:
    The results of experimental investigations of powerful hydrogen plasma jets and fast ion beams interaction with various materials (austenitic chromium-manganese steels, pure vanadium, tungsten, graphite, copper, and their alloys: Cu-4 mass% Ni and Cu-10 mass% Ga) are presented. The materials were placed on the discharge axis of the PF-1000 device and irradiated with fluxes of fast ions (of energy in the range from tens keV up to several MeV) and with plasma streams (of power flux density q~(108 109) W/cm2). It was found that the fast ions and plasma streams caused different damages to the aforementioned materials. A diverse character of the damages to the individual investigated material was revealed. Some peculiarities of the process as well as the correlation between the surface density of the "macroscopic" structural defects (blisters and craters) and the fluence of the fast ions implanted in the specimen are discussed.
    Źródło:
    Nukleonika; 2002, 47, 4; 155-162
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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