Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Townsend to glow discharge transition for a nanosecond pulse plasma in helium: space charge formation and resulting electric field dynamics

Journal Article · · Plasma Sources Science and Technology
 [1];  [2];  [3];  [1]
  1. Univ. of Minnesota, Minneapolis, MN (United States)
  2. Univ. of Minnesota, Minneapolis, MN (United States); South China Univ. of Technology, Guanzhou (China)
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Stark polarization spectroscopy is used to investigate the temporal evolution of the electric field distribution in the cathode region of a nanosecond pulsed discharge in helium at 120 Torr. The measurements are performed on the He I transition at 492.19 nm, during the early stages of the discharge formation. The experimental results are compared with the predictions of a 1D fluid model. Time-resolved ICCD images show that the discharge develops as a diffuse, cathode-directed ionization wave with a Townsend-like feature before transitioning into a glow-like structure. Near anode instabilities characterized by filament formation were observed near the high voltage electrode. Within 30 ns, a reduction of the sheath thickness to about 250 μm is observed, coinciding with a gradual increase of the discharge current and proportional increase in electric field at the cathode. Additionally, the cathode electric field corresponding to this sheath with a thickness of 250 μm is about 40 kV cm-1. A subsequent steep increase of the discharge current leads to a further reduction of the sheath width. The electric field evolution as obtained by the fluid model is in excellent agreement with the measurements and shows that an enhanced ionization near the cathode is causing the space charge formation responsible for the increase in electric field.
Research Organization:
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Fusion Energy Sciences (FES)
Grant/Contract Number:
AC04-94AL85000; NA0003525; SC0016053; SC0020232; SC0021376
OSTI ID:
1778060
Report Number(s):
SAND--2021-4047J; 695284
Journal Information:
Plasma Sources Science and Technology, Journal Name: Plasma Sources Science and Technology Journal Issue: 5 Vol. 30; ISSN 0963-0252
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (56)

LXCat: an Open-Access, Web-Based Platform for Data Needed for Modeling Low Temperature Plasmas: LXCat: an Open-Access, Web-Based Platform for… journal September 2016
Transport properties of gaseous ions over a wide energy range. Part II journal September 1978
Physics and chemistry in a glow dielectric barrier discharge at atmospheric pressure: diagnostics and modelling journal September 2003
Spectroscopic study of the cathode fall region of Grimm-type glow discharge in helium journal June 1997
Electric‐field measurements in 13.56 MHz helium discharges journal December 1993
Electric fields in a sheath near a metal–dielectric interface journal October 2004
Simulation of a direct current microplasma discharge in helium at atmospheric pressure journal July 2006
Measurements of Ar+ and Xe+ velocities near the sheath boundary of Ar–Xe plasma using two diode lasers journal July 2007
Observation of the transition from a Townsend discharge to a glow discharge in helium at atmospheric pressure journal November 2007
Radial evolution of dielectric barrier glowlike discharge in helium at atmospheric pressure journal December 2007
The dominant role of impurities in the composition of high pressure noble gas plasmas journal January 2008
Spectroscopic measurement of electric field in dielectric barrier discharge in helium journal May 2008
Energy coupling to the plasma in repetitive nanosecond pulse discharges journal November 2009
Transitions between corona, glow, and spark regimes of nanosecond repetitively pulsed discharges in air at atmospheric pressure journal May 2010
Experimental and theoretical study of a glow discharge at atmospheric pressure controlled by dielectric barrier journal March 1998
Spatially resolved electric field measurements in the cathode fall using optogalvanic detection of Rydberg atoms journal September 1984
Electric field dynamics in an atmospheric pressure helium plasma jet impinging on a substrate journal December 2020
Field reversal in the negative glow of a DC glow discharge journal October 1995
Simulation of pulsed dielectric barrier discharge xenon excimer lamp journal October 2004
Spatially resolved diagnostics of an atmospheric pressure direct current helium microplasma journal May 2005
Finite element analysis of an atmospheric pressure RF-excited plasma needle journal August 2006
Electric field reversals in the sheath region of capacitively coupled radio frequency discharges at different pressures journal May 2008
On the regime transitions during the formation of an atmospheric pressure dielectric barrier glow discharge journal May 2009
Rapid formation of electric field profiles in repetitively pulsed high-voltage high-pressure nanosecond discharges journal January 2010
On the use of the intensity ratio of He lines for electric field measurements in atmospheric pressure dielectric barrier discharge journal January 2014
The influence of the voltage rise rate on the breakdown of an atmospheric pressure helium nanosecond parallel-plate discharge journal March 2015
Electric field measurement in gas discharges using stark shifts of He I lines and their forbidden counterparts journal April 2015
Glow and Townsend dielectric barrier discharge in various atmosphere journal November 2005
Sheaths in laboratory and space plasmas journal July 2013
Negative corona, glow and spark discharges in ambient air and transitions between them journal May 2005
Solving the Boltzmann equation to obtain electron transport coefficients and rate coefficients for fluid models journal October 2005
The Child–Langmuir law and analytical theory of collisionless to collision-dominated sheaths journal November 2008
Self-sustained dc atmospheric pressure normal glow discharge in helium: from microamps to amps journal August 2009
Self-consistent two-dimensional modeling of cold atmospheric-pressure plasma jets/bullets journal May 2012
Interacting kinetics of neutral and ionic species in an atmospheric-pressure helium–oxygen plasma with humid air impurities journal June 2013
Simulation of the stable ‘quasi-periodic’ glow regime of a nanosecond repetitively pulsed discharge in air at atmospheric pressure journal July 2013
High-current cathode and anode spots in gas discharges at moderate and elevated pressures journal September 2014
Electric field development in γ -mode radiofrequency atmospheric pressure glow discharge in helium journal March 2016
Numerical modelling of the effect of dry air traces in a helium parallel plate dielectric barrier discharge journal September 2016
Space and time resolved electric field measurements in helium and hydrogen RF-discharges journal January 1999
Electric field measurements in a nanosecond pulse discharge in atmospheric air journal April 2017
Sub-nanosecond resolution electric field measurements during ns pulse breakdown in ambient air journal December 2017
1D PIC-DSMC analysis of a high-pressure nanosecond pulse discharge breakdown in helium journal November 2019
Measured cathode fall characteristics depending on the diameter of a hydrogen hollow cathode discharge journal September 2017
Foundations of atmospheric pressure non-equilibrium plasmas journal November 2017
Electric field measurements in nanosecond pulse discharges in air over liquid water surface journal January 2018
Electric field induced second harmonic (E-FISH) generation for characterization of fast ionization wave discharges at moderate and low pressures journal April 2019
Effects of excitation voltage pulse shape on the characteristics of atmospheric-pressure nanosecond discharges journal July 2019
Measurements of electric field in an atmospheric pressure helium plasma jet by the E-FISH method journal March 2020
Glow-discharge sheath electric fields: Negative-ion, power, and frequency effects journal September 1987
Laser optogalvanic and fluorescence studies of the cathode region of a glow discharge journal September 1988
Electric field reversals in dc negative glow discharges journal December 1989
Species-Independent Femtosecond Localized Electric Field Measurement journal February 2017
Boundary conditions in fluid models of gas discharges journal July 2000
Sensitive, Nonintrusive, In-Situ Measurement of Temporally and Spatially Resolved Plasma Electric Fields journal February 1984
Nonlinear optical techniques for plasma diagnostics journal January 1998

Similar Records

Electric Field Measurements to Investigate Sheath Formation in a Nanosecond Pulsed Discharge
Technical Report · Thu Jul 06 00:00:00 EDT 2023 · OSTI ID:1923970

Observation of the transition from a Townsend discharge to a glow discharge in helium at atmospheric pressure
Journal Article · Sun Nov 25 23:00:00 EST 2007 · Applied Physics Letters · OSTI ID:21016181

Physical mechanisms of self-organization and formation of current patterns in gas discharges of the Townsend and glow types
Journal Article · Tue Oct 15 00:00:00 EDT 2013 · Physics of Plasmas · OSTI ID:22218482