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    Wyświetlanie 1-3 z 3
    Tytuł:
    Effect of Temperature on the Ion Beam Induced Luminescence of Oxide Powders Doped with Rare Earth Elements
    Autorzy:
    Gawlik, G.
    Panczer, G.
    Moncoffre, N.
    Jagielski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1400478.pdf
    Data publikacji:
    2013-05
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.60.Hk
    Opis:
    The hydrogen ion beam induced luminescence of gadolinium oxide $Gd_2O_3$ doped with 1% of holmium (Ho) and 1% of bismuth (Bi) was investigated. Degradation of the holmium related 549 nm ion beam induced luminescence line intensity during hydrogen ion irradiation was observed. Two different mechanisms of the ion beam induced luminescence degradation has been proposed: the first one related to the accumulation of ion induced target material damage and the second mechanism related to the target temperature growth during ion beam bombardment. The experimental method for separation of both mechanisms effects was proposed and demonstrated.
    Źródło:
    Acta Physica Polonica A; 2013, 123, 5; 920-922
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Ion and Electron Beam Induced Luminescence οf Rare Earth Doped YAG Crystals
    Autorzy:
    Gawlik, G.
    Sarnecki, J.
    Jóźwik, I.
    Jagielski, J.
    Pawłowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1504113.pdf
    Data publikacji:
    2011-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.60.Hk
    52.59.Bi
    79.20.Rf
    61.80.Lj
    41.75.Ak
    41.75.Cn
    61.72.S-
    61.72.-y
    29.40.-n
    77.84.Bw
    79.60.Ht
    87.53.Bn
    78.55.-m
    78.60.-b
    77.55.Px
    77.55.-g
    25.40.Lw
    Opis:
    The aim of this work was the evaluation of ion-beam induced luminescence for the characterization of luminescent oxide materials containing rare earth elements. The yttrium aluminium garnet epilayers doped with Nd, Pr, Ho, and Tm atoms were used. The ion-beam induced luminescence spectra were excited using 100 keV $H_2^{+}$ ion beam and were recorded in the wavelengths ranging from 300 nm up to 1000 nm. The separate parts of the surface of the same samples were used for ion-beam induced luminescence and cathodoluminescence experiments. Cathodoluminescence spectra have been recorded in the range from 370 nm up to 850 nm at 20 keV e-beam in scanning electron microscope equipped with a grating spectrometer coupled with a photomultiplier. The observed narrow ion-beam induced luminescence lines can be ascribed to the well known radiative transitions in the rare-earth ions in the YAG crystals. The cathodoluminescence spectra reveal essentially the same emission lines as ion-beam induced luminescence. The decrease of the ion-beam induced luminescence lines intensity has been observed under the increasing ion fluences. The ion-beam induced luminescence may be used for characterization of transparent luminescent materials as an alternative method for cathodoluminescence and can be especially useful for observation of ion-beam damage formation in crystals.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 1; 181-183
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Damage Accumulation in Nuclear Ceramics
    Autorzy:
    Thomé, L.
    Moll, S.
    Jagielski, J.
    Debelle, A.
    Garrido, F.
    Sattonnay, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1503742.pdf
    Data publikacji:
    2011-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.80.-x
    61.80.Jh
    61.82.Ms
    61.43.-j
    61.85.+p
    68.37.Lp
    Opis:
    Ceramics are key engineering materials in many industrial domains. The evaluation of radiation damage in ceramics placed in a radiative environment is a challenging problem for electronic, space and nuclear industries. Ion beams delivered by various types of accelerators are very efficient tools to simulate the interactions involved during the slowing-down of energetic particles. This article presents a review of the radiation effects occurring in nuclear ceramics, with an emphasis on new results concerning the damage build-up. Ions with energies in the keV-GeV range are considered for this study in order to explore both regimes of nuclear collisions (at low energy) and electronic excitations (at high energy). The recovery, by electronic excitation, of the damage created by ballistic collisions (swift heavy ion beam induced epitaxial recrystallization process) is also reported.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 1; 7-12
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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