Hydrogen Balmer alpha line shapes for hydrogen‐argon mixtures in a low‐pressure rf discharge

1993 ◽  
Vol 74 (11) ◽  
pp. 6558-6565 ◽  
Author(s):  
S. Djurović ◽  
J. R. Roberts
Keyword(s):  
Low Pressure ◽  
Rf Discharge ◽  
Line Shapes

On the analysis of surface free energy of DLC coatings deposited in low pressure RF discharge

2004 ◽  
Vol 54 (S3) ◽  
pp. C877-C882 ◽  
Author(s):  
Z. Navrátil ◽  
V. Buršíková ◽  
P. St’ahel ◽  
M. Šíra ◽  
P. Zvěřina
Keyword(s):  
Free Energy ◽  
Surface Free Energy ◽  
Low Pressure ◽  
Rf Discharge ◽  
Dlc Coatings

The Modification of Carbon Included Polyethylene Surface by Plasma Treatment for Metallizing Using a Low Pressure RF Discharge Plasma

2005 ◽  
Vol 8 (1) ◽  
Author(s):  
Jeou-Long Lee ◽  
Chung-Ming Liu ◽  
Kuen Ting ◽  
Wei-Kung Cheng ◽  
Takayoshi Tsuchida ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Contact Angle ◽  
Surface Layer ◽  
Discharge Plasma ◽  
Treatment Time ◽  
Low Pressure ◽  
Rf Discharge ◽  
Nickel Layer ◽  
Good Adhesion ◽  
Polyethylene Surface

AbstractSurface modification of the carbon included polyethylene (semi-conductive PE) surface for metallizing using a low pressure RF discharge plasma has been carried out. The contact angle was used as a measure of the wettability of the PE surface. The roughness and the chemical bondings in PE surface layer were analized by DFM and XPS, respectively. Typical results show that the contact angle decreases from approximately 94° to below 10° after several minutes' treatment and recovers to a saturation value when it was put open to the air after treatment. The saturation value of the contact angle is smaller as the gas pressure for treatment is higher and the treatment time is longer but all are below approximately 60° which is still smaller than that of untreated. DFM and XPS results show that the surface roughness and the bondings C-O and C=O in the PE surface layer also increase with increasing the treatment time and seem to be responsible for improving the hydrophilic property of PE. After pretreatment process, nickel was coated on the PE sheet by electrodeposition method and a good adhesion between the nickel layer and the PE surface compared with that of untreated was obtained.

scholarly journals Diagnostics of low-pressure capacitively coupled RF discharge argon plasma

2019 ◽  
Vol 13 (27) ◽  
pp. 76-82
Author(s):  
Kadhim A. Aadim
Keyword(s):  
Electron Temperature ◽  
Electron Density ◽  
Langmuir Probe ◽  
Gas Flow ◽  
Low Pressure ◽  
Gas Pressure ◽  
Rf Discharge ◽  
Electrode Gap ◽  
Probe Characteristic ◽  
Capacitively Coupled

Low-pressure capacitively coupled RF discharge Ar plasma has been studied using Langmuir probe. The electron temperature, electron density and Debay length were calculated under different pressures and electrode gap. In this work the RF Langmuir probe is designed using 4MHz filter as compensation circuit and I-V probe characteristic have been investigated. The pressure varied from 0.07 mbar to 0.1 mbar while electrode gap varied from 2-5 cm. The plasma was generated using power supply at 4MHz frequency with power 300 W. The flowmeter is used to control Argon gas flow in the range of 600 standard cubic centimeters per minute (sccm). The electron temperature drops slowly with pressure and it's gradually decreased when expanding the electrode gap. As the gas pressure increases, the plasma density rises slightly at low gas pressure while it drops little at higher gas pressure. The electron density decreases rapidly with expand distances between electrodes.

An experimental study of the plasma parameters of a hybrid low-pressure RF discharge

2012 ◽  
Vol 67 (1) ◽  
pp. 97-101 ◽  
Author(s):  
K. V. Vavilin ◽  
M. A. Gomorev ◽  
E. A. Kralkina ◽  
P. A. Nekludova ◽  
V. B. Pavlov ◽  
...  
Keyword(s):  
Experimental Study ◽  
Low Pressure ◽  
Rf Discharge ◽  
Plasma Parameters

Electronic energy spectrum of the sheath of an asymmetric low-pressure capacitive rf discharge

1999 ◽  
Vol 25 (10) ◽  
pp. 772-774 ◽  
Author(s):  
A. F. Aleksandrov ◽  
A. A. Rukhadze ◽  
V. P. Savinov ◽  
I. F. Singaevski
Keyword(s):  
Energy Spectrum ◽  
Low Pressure ◽  
Electronic Energy ◽  
Rf Discharge ◽  
Electronic Energy Spectrum
Sign in / Sign up

Export Citation Format

Share Document