Modeling of nonlocal slow-electron kinetics in a low-pressure negative-glow plasma

Abstract The negative glow plasma of a cylindrical hollow cathode dc discharge (0.05 - 1 Torr Argon, 1-30 mA) is investigated as to the position of the glow edge, the axial dependence of the cathode current density, the axial and radial potential distributions, the density and energy of electrons (from Langmuir probe measurements) as dependent on pressure, discharge current and position, etc. It is found that two groups of electrons exist whose energies are < 0.5 eV ~ 3 eV and the ratio of their denisties being 3 up to 20. A phenomenological explanation is given for the relatively high denisty of the fast group, The results are compared with those of other auhors concerning hollow-cathode and linear discharges.

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Dynamics of the low pressure negative glow

ICOPS 2000. IEEE Conference Record - Abstracts. 27th IEEE International Conference on Plasma Science (Cat. No.00CH37087) ◽

10.1109/plasma.2000.855093 ◽

2002 ◽

Author(s):

R.K. Hutcherson

Keyword(s):

Low Pressure ◽

Negative Glow

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Hydrophobic Coating of Multi-Walled Carbon Nanotubes by Using a HMDSO Glow Plasma under Low Pressure

Journal of the Korean Physical Society ◽

10.3938/jkps.53.641 ◽

2008 ◽

Vol 53 (2) ◽

pp. 641-645 ◽

Cited By ~ 4

Author(s):

Sung Yoon Jo ◽

Soon Cheon Cho ◽

Kyung Ha Lee ◽

Han Sup Uhm

Keyword(s):

Carbon Nanotubes ◽

Low Pressure ◽

Hydrophobic Coating ◽

Multi Walled Carbon Nanotubes ◽

Glow Plasma ◽

Walled Carbon Nanotubes

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Cultivation of Cress Involving Water Treated Under Different Atmospheres with Low-Temperature, Low-Pressure Glow Plasma of Low Frequency

Water ◽

10.3390/w12082152 ◽

2020 ◽

Vol 12 (8) ◽

pp. 2152

Author(s):

Katarzyna Ciesielska ◽

Wojciech Ciesielski ◽

Damian Kulawik ◽

Zdzisław Oszczęda ◽

Piotr Tomasik

Keyword(s):

Ascorbic Acid ◽

Low Temperature ◽

Chlorophyll Content ◽

Tap Water ◽

Low Frequency ◽

Low Pressure ◽

Total Chlorophyll ◽

Total Chlorophyll Content ◽

Glow Plasma ◽

Water Saturated

Watering cress with tap water treated for 30 min with low-temperature, low-pressure glow plasma of low frequency (LPGP) in the air (LPGPA), saturated with either nitrogen (LPGPN), CO2 (LPGPC) or methane (LPGPM), promoted the yield of crops. Their efficiency increased in the order LPGPA < LPGPN < LPGPM < LPGPC. The kind of water prior and after the treatment specifically influenced the fat and protein content in the watered cress and had no effect on the carbohydrate content. Watering cress with water saturated with N2 and CO2 slightly increased the total chlorophyll content, whereas watering with water saturated with CH4 significantly decreased it. Watering with plasma-treated water always resulted in an increase in the total chlorophyll content and subtly influenced the content of carotenoids and ascorbic acid. Watering cress with water saturated with particular gases influenced the bioaccumulation of cations and anions.

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