TY - GEN
T1 - Simulation studies of liquid water breakdown by a sub-microsecond pulse
AU - Qian, J.
AU - Joshi, R. P.
AU - Kolb, J.
AU - Schoenbach, K. H.
AU - Dickens, J.
AU - Neuber, A.
AU - Cevallos, M.
AU - Krompholz, H.
AU - Schamiloglu, E.
AU - Gaudet, J.
PY - 2007
Y1 - 2007
N2 - An electrical breakdown model for liquids in response to a sub-microsecond (∼ 100 ns) voltage pulse is presented, and quantitative evaluations carried out. It is proposed that breakdown is initiated by field emission at the interface of pre-existing micro-bubbles. Impact ionization within the micro-bubble gas then contributes to plasma development, with cathode injection having a delayed and secondary role. Continuous field emission at the streamer tip contributes to filament growth and propagation. This model can adequately explain almost all of the experimentally observed features, including dendritic structures and fluctuations in the pre-breakdown current. Two-dimensional, time-dependent simulations have been carried out based on a continuum model for water, though the results are quite general. Monte Carlo simulations provide the relevant transport parameters for our model. Our quantitative predictions match the available data quite well, including the breakdown delay times and observed optical emission.
AB - An electrical breakdown model for liquids in response to a sub-microsecond (∼ 100 ns) voltage pulse is presented, and quantitative evaluations carried out. It is proposed that breakdown is initiated by field emission at the interface of pre-existing micro-bubbles. Impact ionization within the micro-bubble gas then contributes to plasma development, with cathode injection having a delayed and secondary role. Continuous field emission at the streamer tip contributes to filament growth and propagation. This model can adequately explain almost all of the experimentally observed features, including dendritic structures and fluctuations in the pre-breakdown current. Two-dimensional, time-dependent simulations have been carried out based on a continuum model for water, though the results are quite general. Monte Carlo simulations provide the relevant transport parameters for our model. Our quantitative predictions match the available data quite well, including the breakdown delay times and observed optical emission.
UR - http://www.scopus.com/inward/record.url?scp=45149085069&partnerID=8YFLogxK
U2 - 10.1109/PPC.2005.300767
DO - 10.1109/PPC.2005.300767
M3 - Conference contribution
AN - SCOPUS:45149085069
SN - 078039190X
SN - 9780780391901
T3 - Digest of Technical Papers-IEEE International Pulsed Power Conference
SP - 738
EP - 741
BT - 2005 IEEE Pulsed Power Conference, PPC
T2 - 2005 IEEE Pulsed Power Conference, PPC
Y2 - 13 June 2005 through 17 June 2005
ER -