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    Wyświetlanie 1-7 z 7
    Tytuł:
    H⁺ Scattering in n-Butanol
    Autorzy:
    Nikitović, Ž.
    Raspopović, Z.
    Stojanović, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1032572.pdf
    Data publikacji:
    2017-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    51.10.+y
    52.20.Hv
    52.65.Pp
    Opis:
    In this paper we show predictions for the low energy cross-sections and transport properties for the H⁺ in n-butanol gas. These data are needed for modelling in numerous technologically important applications. Appropriate gas phase enthalpies of formation for the products were used to calculate scattering cross-section as a function of kinetic energy. Calculated cross-sections can be used to obtain transport parameters as a function of E/N (E - electric field, N - gas density) for H⁺ in n-butanol gas.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 4; 1420-1423
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rate Coefficients of $F^{-}$ Ions in $Ar//BF_{3}$ Mixtures
    Autorzy:
    Nikitović, Ž.
    Stojanović, V.
    Raspopović, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1400505.pdf
    Data publikacji:
    2015-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    51.10.+y
    52.20.Hv
    52.65.Pp
    Opis:
    Transport parameters of $F^{-}$ ions in mixtures $Ar//BF_{3}$ in DC fields were calculated using Monte Carlo simulation technique assuming the scattering cross-section set assembled on the basis of Nanbu's technique separating elastic from reactive collisions. In this work we present characteristic energy and rate coefficients for low and moderate reduced electric fields E/N (N - gas density) and account for the non-conservative collisions.
    Źródło:
    Acta Physica Polonica A; 2015, 127, 6; 1634-1636
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cross-section and transport parameters of Ne⁺ in CF₄
    Autorzy:
    Nikitović, Ž.
    Stojanović, V.
    Raspopović, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1058180.pdf
    Data publikacji:
    2016-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    51.10.+y
    52.20.Hv
    52.65.Pp
    Opis:
    A cross-section set for scattering Ne⁺ ions in CF₄ is assessed by using available experimental data for charge transfer cross-sections. In this paper we present new results for the mean energy, reduced mobility and diffusion coefficients for low and moderate reduced electric fields E/N (N - gas density) and account for the non-conservative collisions. The Monte Carlo method is used to calculate transport properties of Ne⁺ ions in CF₄ at temperature of T=300 K.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 6; 1343-1345
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Transport Parameters of $F^-$ Ions in $BF_3$
    Autorzy:
    Nikitović, Ž.
    Stojanović, V.
    Raspopović, Z.
    Jovanović, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1205173.pdf
    Data publikacji:
    2014-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    51.10.+y
    52.20.Hv
    52.65.Pp
    52.77.-j
    Opis:
    In this work we presented the new results for energy dependent cross-sections and transport coefficients as a function of E/N for $F^-$ ions in $BF_3$ gas. Results were obtained by using the Monte Carlo technique for cross-section set determined on the basis of the Nanbu theory. Monte Carlo method is applied to obtain swarm parameters at temperature of T=300 K.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 3; 724-726
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Transport Coefficients in Mixtures $Ar//H_2$
    Autorzy:
    Nikitović, Ž.
    Stojanović, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/1400294.pdf
    Data publikacji:
    2013-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    51.10.+y
    52.20.Hv
    52.65.Pp
    52.77.-j
    Opis:
    In this work we present electron transport coefficients for electrons in $Ar//H_2$ mixtures for the conditions used in plasma assisted technologies for semiconductor production i.e. in moderate to very high reduced electric field E/N (E - electric field, N - gas density). We used a two term numerical solution of the Boltzmann equation at the lowest E/N and mean energies and also Monte Carlo simulation technique at moderate and high E/N. We show that a good agreement with experimental data exists for low and moderate E/N and that based on the tests for pure $H_2$ and Ar we can model properly the high E/N development. Results were obtained for abundances of $H_2$ from 1% to 50%. Such data are required to test the sets of cross-section data which are necessary in kinetic models for this mixture and also to produce transport coefficients for fluid models. Hydrogen is used for etching of organic compounds, most importantly low k dielectrics, at the same time argon as a buffer gas is added to control the mean energy and distribution function. Besides, operation at high E/N allows the generation of fast neutrals for charging free etching on nanometer scales.
    Źródło:
    Acta Physica Polonica A; 2013, 123, 1; 73-75
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cross-Sections and Transport Properties of $F^{-}$ Ions in $F_2$
    Autorzy:
    Stojanović, V.
    Nikitović, Ž.
    Jovanović, J.
    Raspopović, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/1205818.pdf
    Data publikacji:
    2014-01
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    51.10.+y
    52.20.Hv
    52.65.Pp
    52.77.-j
    Opis:
    We present the new results for the simple scattering cross-section set and proposed transport coefficients for $F^{-}$ ions in $F_2$ that can be used in such models. Nanbu's theory based on thermodynamic threshold energies and separating elastic and reactive collisions is used to calculate cross-sections for binary collisions of ions with atoms and molecules. Direct MC method is applied to obtain swarm parameters at temperature of T = 300 K.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 1; 46-48
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modeling of Excitation by Heavy Particles in Pure $H_2$ Discharges at High E/N
    Autorzy:
    Stojanović, V.
    Nikitović, Ž.
    Powiązania:
    https://bibliotekanauki.pl/articles/1489837.pdf
    Data publikacji:
    2012-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    51.10.+y
    52.20.Hv
    52.65.Pp
    52.77.-j
    Opis:
    $H_{α}$ emission profiles were calculated for the high E/N (electric field E to gas density N ratio) Townsend discharges in pure hydrogen. Heavy particle collisions including the fast neutrals and interactions with the cathode surface are also included. The basic data were chosen to be in accordance with those used by Phelps. Monte Carlo simulation technique employing null collision method was used to follow electrons and heavy particles between collisions with $H_2$ or with surface for the conditions of a high E/N. Trajectories of reaction fragments are followed after the collision until their neutralization or thermalization down to the threshold of $H_{α}$ excitation. We obtained spatially resolved emission profiles and the Doppler broadened line profiles for the conditions of the experiment of Petrović and Phelps. Intensity of the Doppler profile wing showing $H_{α}$ emission of particles emerging from the cathode direction is obtained assuming that the reflection coefficient of the fast H atoms depends on the incident angle and on energy of the incident particle.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 3; 622-624
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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