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Wyszukujesz frazę "52.80.Mg" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
Nitric Oxide Generator Based on Pulsed Arc Discharge
Autorzy:
Sakai, S.
Matsuda, M.
Wang, D.
Namihira, T.
Akiyama, H.
Okamoto, K.
Toda, K.
Powiązania:
https://bibliotekanauki.pl/articles/1807934.pdf
Data publikacji:
2009-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
52.80.Mg
Opis:
Nitric oxide (NO) is increasingly being used in medical applications. Currently, a gas cylinder of $N_{2}$ mixed with a high concentration of NO is used in the NO inhalation system. However, this arrangement is potentially risky due to the possibility of accidental leak of NO from the cylinder. The presence of NO in air leads to the formation of nitric dioxide $(NO_{2})$, which is toxic to the lungs. Therefore, an on-site generation of NO would be very desirable for patients with acute respiratory distress syndrome and other related illnesses. Previously, our group reported the production of NO using a pulsed arc discharge. In this work, the prototype of the on-site NO generator was developed and the performances of the NO generator were demonstrated for medical applications.
Źródło:
Acta Physica Polonica A; 2009, 115, 6; 1104-1106
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Gas-Insulated Self-Breakdown Spark Gaps: Aspects on Low-Scattering and Long-Lifetime Switching
Autorzy:
Frey, W.
Sack, M.
Wuestner, R.
Mueller, G.
Powiązania:
https://bibliotekanauki.pl/articles/1807888.pdf
Data publikacji:
2009-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
52.75.Kq
52.80.Mg
Opis:
The influence of the electric field distribution between the electrodes and the seed electron generation rate on the scattering of the breakdown voltage of $SF_{6}$-insulated spark gaps was investigated. The breakdown voltage scattering considerably can be reduced by applying large-gap-volume, uniform-field electrode profiles instead of spherical shaped electrodes. Moreover, uniform field electrode profiles exhibit an uniform discharge probability in the entire gap volume and following an almost uniform erosion of electrode material along the electrode's surface. This preserves electrode shape and switching performance of the spark gap for a long maintenance-free lifetime. Breakdown voltage scattering further can be reduced by increasing the seed electron generation in the gap by an auxiliary corona discharge adjacent to the main gap. The experimental observations are discussed on the basis of the volume time law for discharge initiation.
Źródło:
Acta Physica Polonica A; 2009, 115, 6; 1016-1018
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electron Avalanche Statistics
Autorzy:
Ficker, T.
Powiązania:
https://bibliotekanauki.pl/articles/1585038.pdf
Data publikacji:
2009-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
52.80.-s
52.80.Dy
52.80.Mg
Opis:
A solution of the long-lasting problem with anomalous population statistics of pre-streamer avalanches has been proposed in the form of a new generalized probability density function.
Źródło:
Acta Physica Polonica A; 2009, 116, 6; 1018-1020
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pulse Breakdown Strengths of Liquid, Gel and Solid Insulating Materials Using Closely Spaced Spherical Electrodes
Autorzy:
Leask, P.
Powiązania:
https://bibliotekanauki.pl/articles/1807879.pdf
Data publikacji:
2009-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
77.22.Jp
52.80.Mg
52.80.Wq
Opis:
In this paper an evaluation of a number of different insulating materials, under pulse breakdown conditions, is described. The experimental setup used an 8 stage Marx generator in order to generate a high potential difference (in the range 80-220 kV) between two spherical electrodes which were spaced 1.5-3.5 mm apart. The breakdown voltage of each of the materials was recorded and the data was then post-processed in order to determine the breakdown strength of each of the samples.
Źródło:
Acta Physica Polonica A; 2009, 115, 6; 998-1000
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of Volume Breakdown on Surface Flashover in High Pressure $SF_{6}$
Autorzy:
Neuber, A.
Krile, J.
Rogers, G.
Krompholz, H.
Powiązania:
https://bibliotekanauki.pl/articles/1807877.pdf
Data publikacji:
2009-06
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
51.50.+v
52.80.Mg
52.70.Kz
Opis:
We investigate the pulsed flashover voltage of dielectric samples at up to 4 bar $SF_{6}$ in the simultaneous presence of a high current (>10 kA, ∼20 microsecond pulse) volume discharge nearby. The chosen distance, ∼7 cm, between surface and volume breakdown is consistent with conditions found in the Sandia-Z-machine type rimfire switch. For a flashover gap distance of 24 mm and a simultaneous excitation within ∼ 5 microseconds, we observe an average reduction in the flashover voltage from 164 kV to 142 kV at 3.7 bar when the volume discharge is turned on. The test setup utilizing a magnetic switching scheme operating at 320 kV and 10 kA is briefly discussed along with the breakdown properties and the spectral characterization of the volume/surface flashover discharge plasma. In general, UV light propagates relatively unattenuated for wavelengths >160 nm in the high pressure $SF_{6}$ from the volume discharge to the dielectric surface, setting up conditions which are conducive to photoelectron emission from the dielectric.
Źródło:
Acta Physica Polonica A; 2009, 115, 6; 995-997
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Carbon Deposit Formation in Normal-Pressure Electrical Discharges in Hydrocarbons
Autorzy:
Sobczyk, A.
Jaworek, A.
Powiązania:
https://bibliotekanauki.pl/articles/1807543.pdf
Data publikacji:
2009-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
52.77.Fv
52.80.Mg
81.05.Lg
Opis:
The process of synthesis of carbon deposits from hydrocarbon vapours in low-current electrical-discharge plasma was investigated in the paper. The carbon deposits were effectively synthesised in discharge of positive polarity generated between a stainless steel needle and a plate made of nickel alloy, for the discharge current ranged from 0.1 mA up to 3 mA. The experiments were carried out at normal pressure in cyclohexane vapours with argon as carrier gas. The process of synthesis of carbon deposits was investigated using optical emission spectroscopy.
Źródło:
Acta Physica Polonica A; 2009, 116, S; S-136-S-138
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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