Temat: 79.60.Ht - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Photoemission and Inverse Photoemission Studies of SiO$\text{}_{2}$
Autorzy:: Sobczak, A.
Nietubyć, R.
Sobczak, J. W.
Tematy:: 79.20.Kz
71.25.Tn
79.60.Ht; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1931764.pdf Link otwiera się w nowym oknie
Opis:: Occupied and unoccupied electron states of amorphous silicon dioxide film supported on Si crystal are studied by using X-ray photoemission and, for the first time, X-ray inverse photoemission (X-ray bremsstrahlung isochromat method). A special care was undertaken to minimize decomposition of silicon oxide during X-ray bremsstrahlung measurements. The experimental spectra are compared with theoretical band structure calculations for amorphous SiO$\text{}_{2}$ from the literature and good overall agreement is found.
Dostawca treści:: Biblioteka Nauki

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na półce

Skocz do pozycji: 2.

Tytuł:: Ion and Electron Beam Induced Luminescence οf Rare Earth Doped YAG Crystals
Autorzy:: Gawlik, G.
Sarnecki, J.
Jóźwik, I.
Jagielski, J.
Pawłowska, M.
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; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1504113.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Volume Free Electron Laser with a "Grid" Photonic Crystal in a Cylindrical Waveguide
Autorzy:: Baryshevsky, V.
Molchanov, P.
Tematy:: 41.60.Cr
41.75.Fr
41.75.Ht
42.79.Dj; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Powiązania:: https://bibliotekanauki.pl/articles/1807859.pdf Link otwiera się w nowym oknie
Opis:: Specific features of Volume Free Electron Laser (VFEL) with a photonic crystal made from the wire grids periodically strained in a waveguide are studied theoretically and experimentally. Electrodynamical properties of a "grid" photonic crystal built in a cylindrical waveguide are reported. Possibility to use it for VFEL lasing in wide frequency range is discussed.
Dostawca treści:: Biblioteka Nauki

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