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    Wyświetlanie 1-3 z 3
    Tytuł:
    Toward a European Network of Positron Laboratories
    Autorzy:
    Karwasz, G. P.
    Brusa, R. S.
    Egger, W.
    Ogorodnikova, O. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/146548.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    positron beams
    material science
    thermonuclear reaction
    Opis:
    Some applications of controlled-energy positron beams in material studies are discussed. In porous organic polysilicates, measurements of 3γ annihilation by Doppler broadening (DB) method at the Trento University allowed to trace pore closing and filling by water vapor. In silicon coimplanted by He+ and H+, DB data combined with positron lifetime measurements at the München pulsed positron beam allowed to explain Si blistering. Presently measured samples of W for applications in thermonuclear reactors, irradiated by W+ and electrons, show vast changes of positron lifetimes, indicating complex dynamics of defects.
    Źródło:
    Nukleonika; 2015, 60, No. 4, part 1; 733-739
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    International Linear Collider Global and Local Implications
    Autorzy:
    Romaniuk, R. S.
    Powiązania:
    https://bibliotekanauki.pl/articles/226596.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    ILC
    ILC-GDE
    LCC
    SRF
    accelerators
    particle colliders
    linacs
    superconductivity
    high energy physics experiments
    elementary particles
    hadrons
    electron beams
    positron beams
    microwave resonant cavities
    high power 1,3 GHz systems
    superconducting RF electronics
    Opis:
    ILC machine–International Liner Collider, is one of two accelerators e+e-just under design and advanced consideration to be built with final energy of colliding electron and positron beams over 1 TeV. An alternative project to ILC is CLIC in CERN The ILC machine is an important complementary addition for the research potential of the LHC accelerator complex. The required length of ILC is minimally 30 km, but some versions of the TDR estimates mention nearly 50km. Superconducting RF linacs will be built using well established 1,3 GHz TESLA technology using ultrapure niobium or Nb3Sn resonant microwave cavities of RRR class, of ultimate finesse, working with gradients over 35MV/m, while some versions of the design mention ultimate confinement as high as 50MV/m. Several teams from Poland (Kraków. Warszawa, Wrocław – IFJ-PAN, AGH, UJ, NCBJ, UW, PW, PWr, INT-PAN) participate in the global design effort for this machine – including detectors, cryogenics, and SRF systems. Now it seems that the ILC machine will be built in Japan, during the period of 2016-2026. If true, Japan will turn to a world super-power in accelerator technology no.3 after CERN and USA. The paper summarizes the state-of-the-art of technical and administration activities around the immense ILC and CLIC machines, with emphasis on potential participation of Polish teams in the global effort of newly established LCC –The Linear Collider Consortium.
    Źródło:
    International Journal of Electronics and Telecommunications; 2014, 60, 2; 181-185
    2300-1933
    Pojawia się w:
    International Journal of Electronics and Telecommunications
    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
      Wyświetlanie 1-3 z 3

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