A1: Sub-ns electric field measurement in transient atmospheric pressure plasmas

Principal Investigators: U. Czarnetzki, N. Lepikhin

Team

Czarnetzki, Uwe (Principal Investigator)

Lepikhin, Nikita (Principal Investigator)

Orel, Inna (PostDoc)

Description

One of the most important parameters determining gas discharge plasmas is the reduced electric field E/N. The electric field controls the electron energy distribution function (EEDF) and, consequently, the pathways of electron energy losses, which have strong influence on the active species yield of the discharge. Thus, measurements of E/N in the discharge are a subject of prime interest in the study of gas discharges. Picosecond Electric-Field Induced Second Harmonic generation (E-FISH) is used as an experimental means to measure model-independent the electric field in atmospheric pressure plasmas. These measurements are supplemented by sub-ns resolved optical emission measurements and electrical measurements of the current and voltage of the discharge.

Publications

• Nanosecond resolved vibrational kinetics of CO₂ in CO₂/N₂ mixtures measured in a pulsed discharge jet
  C. A. Busch, N. D. Lepikhin, I. Orel, J. Kuhfeld, D. Luggenhölscher, U. Czarnetzki
  J. Phys. D: Appl. Phys. 58, 065202 (2025)
  
• Zero-dimensional simulations of DC ns-pulsed plasma jet in N₂ at near atmospheric pressure: validation of the vibrational kinetics
  Y. He, J. Kuhfeld, N. D. Lepikhin, U. Czarnetzki, V. Guerra, R. P. Brinkmann, A. R. Gibson, E. H. Kemaneci
  Plasma Sources Sci. Technol. 33, 115011 (2024)
  Repository: https://rdpcidat.rub.de/node/1040
• PIC/MCC simulation for a ns-pulsed glow discharge in nitrogen at sub-atmospheric pressure and analysis of its quasi-steady state physics
  J. Kuhfeld, N. D. Lepikhin, D. Luggenhölscher, U. Czarnetzki, Z. Donkó
  Plasma Sources Sci. Technol. 32, 084001 (2023)
  Repository: https://rdpcidat.rub.de/node/804
• Breakdown and quasi-DC phase of a nanosecond discharge. Comparison of Optical Emission Spectroscopy measurements with numerical simulations
  N. D. Lepikhin, J. Kuhfeld, Z. Donkó, D. Luggenhölscher, U. Czarnetzki
  Plasma Sources Sci. Technol. 32, 084002 (2023)
  
• On electric field measurements based on intensity ratio of 1^- and 2⁺ systems of nitrogen in discharges with high specific deposited energy
  N. D. Lepikhin, N. A. Popov, S. M. Starikovskaia
  Plasma Sources Sci. Technol. 31, 084002 (2022)
  
• Electric field measurements in a He:N₂nanosecond pulsed discharge with sub-ns time resolution
  N. Lepikhin, D. Luggenhölscher, U. Czarnetzki
  J. Phys. D: Appl. Phys. 54, 055201 (2021)
  Repository: https://rdpcidat.rub.de/node/297
• Vibrational CARS measurements in a near-atmospheric pressure plasma jet in nitrogen: I. Measurement procedure and results
  J. Kuhfeld, N. Lepikhin, D. Luggenhölscher, U. Czarnetzki
  J. Phys. D: Appl. Phys. 54, 305204 (2021)
  Repository: https://rdpcidat.rub.de/node/322
• Vibrational CARS measurements in a near-atmospheric pressure plasma jet in Nitrogen: II. Analysis
  J. Kuhfeld, D. Luggenhölscher, U. Czarnetzki
  J. Phys. D: Appl. Phys. 54, 305205 (2021)
  Repository: https://rdpcidat.rub.de/node/410