APL Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter iResearch App Facebook

BROWSE VOLUMES

Year Range: 
Search Issue | RSS Feeds RSS
Previous Issue Next Issue

24 Dec 2001

Volume 79, Issue 26, pp. 4271-4458

Return to All Sections
back to top
RSS Feeds

Wet plasma reactor for remidiation of SO2

S. Seethamsetty, S. K. Dhali, and Bakul Dave

Appl. Phys. Lett. 79, 4298 (2001); http://dx.doi.org/10.1063/1.1426692 (3 pages) | Cited 4 times

Full Text: Read Online (HTML) | Download PDF

Show Abstract
In pollution control applications, the presence of water in the electrical discharge enhances oxidation of pollutants. The results of an electrical discharge in gas when it flows through a heterogeneous mixture of water and dielectric pellets are reported. The discharge in the wet plasma reactor is more uniform compared to dry dielectric-barrier reactors. The electrical characteristics of such a discharge are discussed. Also the results of removal of SO2 with the wet reactor are reported. The wet reactor was found to be 5–10 times more energy efficient in removing SO2 compared to conventional dry plasma reactors. © 2001 American Institute of Physics.
Show PACS
07.88.+y Instruments for environmental pollution measurements
92.60.Sz Air quality and air pollution
52.77.-j Plasma applications
52.80.-s Electric discharges
52.25.Fi Transport properties

Detection of particles of less than 5 nm in diameter formed in an argon–silane capacitively coupled radio-frequency discharge

L. Boufendi, J. Gaudin, S. Huet, G. Viera, and M. Dudemaine

Appl. Phys. Lett. 79, 4301 (2001); http://dx.doi.org/10.1063/1.1425431 (3 pages) | Cited 59 times

Full Text: Read Online (HTML) | Download PDF

Show Abstract
A method for the detection of dust particles occurring in silane–argon gas mixture plasmas is presented. It is based on the spectral analysis of the radio-frequency current. The amplitudes of the fundamental (13.56 MHz) and second harmonics (40.68 MHz) are very sensitive to the presence of the earlier nanoparticles when their size is in the range of 2–3 nm even if their influence on the capacitive character of the impedance is negligible. This method is nonperturbative, with a temporal resolution in the microsecond range, very easy to implement, and can thus be used for industrial reactors. © 2001 American Institute of Physics.
Show PACS
52.80.Pi High-frequency and RF discharges
52.70.Ds Electric and magnetic measurements
52.77.Dq Plasma-based ion implantation and deposition
52.27.Lw Dusty or complex plasmas; plasma crystals
52.40.Kh Plasma sheaths

Microdischarge array-assisted ignition of a high-pressure discharge: Application to arc lamps

J. G. Eden, C. J. Wagner, J. Gao, N. P. Ostrom, and S.-J. Park

Appl. Phys. Lett. 79, 4304 (2001); http://dx.doi.org/10.1063/1.1428119 (3 pages) | Cited 11 times

Full Text: Read Online (HTML) | Download PDF

Show Abstract
An array of cylindrical microdischarges has been demonstrated to significantly improve the ignition characteristics of a high-pressure arc discharge by preionizing the anode–cathode gap. Situated behind the cathode, the microdischarge array serves to reduce both the statistical and formative time delays by providing seed electrons in the critical early phases of the startup of a cold lamp. Experiments conducted in Ar and Ne/2% Xe mixtures at pressures ranging from 35 to 600 Torr with spacings between the tungsten electrodes of 1–3.5 cm show that a three element array of 400-μm-diam cylindrical microdischarges lowers the dc ignition voltage for the lamp by at least a factor of 2 when the Ar pressure is between 50 and 75 Torr. The required voltage is constant over a broad range in Ar pressure (35 to ∼90 Torr) and similar results are observed with 200-μm-diam microdischarges and for lamp ignition in Ne/2% Xe gas mixtures. © 2001 American Institute of Physics.
Show PACS
52.80.Mg Arcs; sparks; lightning; atmospheric electricity
Return to All Sections
Close

Google Calendar

ADVERTISEMENT

Go to AIP Home   © AIP Publishing LLC
close