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Wyszukujesz frazę "laser ion acceleration" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Nanostructured targets for TNSA laser ion acceleration
    Autorzy:
    Torrisi, L.
    Calcagno, L.
    Cutroneo, M.
    Badziak, J.
    Rosinski, M.
    Zaras-Szydlowska, A.
    Torrisi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/146740.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    target normal sheat acceleration (TNSA)
    laser ion acceleration
    nanostructures
    surface plasmon
    resonance (SPR)
    Opis:
    Nanostructured targets, based on hydrogenated polymers with embedded nanostructures, were prepared as thin micrometric foils for high-intensity laser irradiation in TNSA regime to produce high-ion acceleration. Experiments were performed at the PALS facility, in Prague, by using 1315 nm wavelength, 300 ps pulse duration and an intensity of 1016 W/cm2 and at the IPPLM, in Warsaw, by using 800 nm wavelength, 40 fs pulse duration, and an intensity of 1019 W/cm2. Forward plasma diagnostic mainly uses SiC detectors and ion collectors in time of fl ight (TOF) confi guration. At these intensities, ions can be accelerated at energies above 1 MeV per nucleon. In presence of Au nanoparticles, and/or under particular irradiation conditions, effects of resonant absorption can induce ion acceleration enhancement up to values of the order of 4 MeV per nucleon.
    Źródło:
    Nukleonika; 2016, 61, 2; 103-108
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Post acceleration of ions emitted from laser and spark - generated plasmas
    Autorzy:
    Torrisi, L.
    Cavallaro, S.
    Rosiński, M.
    Nassisi, V.
    Paperny, V.
    Romanov, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/146658.pdf
    Data publikacji:
    2012
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    post ion acceleration
    laser plasma
    ion beam
    ion implantation
    Opis:
    Pulsed lasers at intensities of the order of 1010 W/cm2 interacting with solid matter in vacuum, produce hot plasmas at high temperatures and densities. The charge state distributions of the plasma generate a high electric field, which induces high ion acceleration along the normal to the target surface. The high yield of the emitted ions can generate a near constant current by using repetitive pulses irradiating thick targets. In order to increase ion energy, a post-acceleration system can be employed by using acceleration voltages above 10 kV. Special ion extraction methods can be employed to generate the final ion beam, which is multi-ionic and multi-energetic, due to the presence of different ion species and of different charge states. In this article four different methods of post ion acceleration, employed at the INFN-LNS of Catania, at the IPPLM of Warsaw, at the INFN of Lecce and at the LPI of Moscow, are presented, discussed and compared. All methods are able to implant ions in different substrates at different depth and at different dose-rates.
    Źródło:
    Nukleonika; 2012, 57, 3; 323-332
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Capabilities of Thomson parabola spectrometer in various laser-plasma- and laser-fusion-related experiments
    Autorzy:
    Tchórz, Przemysław
    Szymański, Maciej
    Rosiński, Marcin
    Chodukowski, Tomasz
    Borodziuk, Stefan
    Powiązania:
    https://bibliotekanauki.pl/articles/2202568.pdf
    Data publikacji:
    2023
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    acceleration
    diagnostic
    ion
    laser
    plasma
    Thomson spectrometer
    Opis:
    The Thomson parabola spectrometer (TPS) [1] is a well-known, universal diagnostic tool that is widely used in laser plasma experiments to measure the parameters of accelerated ions. In contrast to other popular ion diagnostics, such as semiconductor detectors or ion collectors, the TPS is not greatly affected by electromagnetic pulses generated during high-power laser interaction with matter and can be tuned to acquire data in various energy ranges of accelerated ions, depending on the goal of the experiment. Despite the many advantages of this diagnostic device, processing the collected data is a diffi cult task and requires a lot of caution during interpretation of gathered results. In this work, we introduce the basic principles of operation and data analysis based on the numerical tool created specifi cally for the TPS designed at the Institute of Plasma Physics and Laser Microfusion, present a range of data obtained during various recent experiments in which our TPS was used, and highlight the diffi culties in data analysis depending on the purpose of the experiment and the experimental setup.
    Źródło:
    Nukleonika; 2023, 68, 1; 29--36
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Real-time diagnostics of fast light ion beams accelerated by a sub-nanosecond laser
    Autorzy:
    Margarone, D.
    Krása, J.
    Picciotto, A.
    Prokupek, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/146632.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    laser-driven acceleration
    ion beams
    real-time diagnostics
    Opis:
    Multi-MeV proton and light ion beams had been produced using the 300 ps, kJ-class iodine laser, operating at Prague Asterix Laser System (PALS) Centre in Prague. The target material had been chosen in such a way so as to increase the proton beam current density (approaching 0.1 A/cm2 at the distance of 1 m from the source). The real-time ion detection was performed by means of a standard flat and ring ion collectors (IC) in the time-of-flight (TOF) configuration. The ICs had been shielded with aluminum foils of various thickness, in order to cut the long photo-peak contribution that is usually overlapping with the ultrafast particle signal, and to analyze mainly the laser-accelerated proton beam. The processing of the obtained experimental IC data is described in some detail, including the deconvolution of TOF signals, evaluation of the UV/soft-X-ray photo-peak absorption, and ion transmission calculations for different metallic filters.
    Źródło:
    Nukleonika; 2011, 56, 2; 137-141
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Post-acceleration of ions from the laser-generated plasma
    Autorzy:
    Giuffrida, L.
    Torrisi, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/146664.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Chemii i Techniki Jądrowej
    Tematy:
    laser ablation
    laser-plasma
    post-acceleration
    ion implantation
    Rutherford backscattering spectrometry (RBS) analysis
    Opis:
    An application of the laser-generated plasma for multi-energetic ion implantation is reported. In an experiment performed at Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Sud (INFN-LNS) of Catania, Italy the Nd:YAG laser was used, operating at the 1064 nm wavelength with the intensity of 1010 W/cm2. A laser pulse of 9 ns duration and 300 mJ energy was employed to ablate a solid target placed in a high vacuum. The free ion expansion occurred in a constant potential chamber placed at 30 kV positive voltage with respect to the ground, which allowed to extract ions with energy proportional to the charge state. In an another experiment, performed at the PALS Prague laser facility (1315 nm, 400 ps pulse width and the laser pulse energy delivered on target equal to about 35 J) Ti ions were obtained through the ablation of solid targets in vacuum by means of 1015 W/cm2 laser pulses. In both cases ion energy analyzers were used to measure the energy-to-charge ratio of the ions. The ion energy distribution was determined from the time-of-flight measurements. The depth profiles measured through Rutherford backscattering spectrometry (RBS) analysis are in good agreement with the ion energy analyzer spectroscopy measurements.
    Źródło:
    Nukleonika; 2011, 56, 2; 161-163
    0029-5922
    1508-5791
    Pojawia się w:
    Nukleonika
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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