Analysis of statistical nature of electrical breakdown time delay in nitrogen at 6.6 mbar pressure in presence of positive ions and N(4S) atoms

2011 ◽  
Vol 51 (9) ◽  
pp. 877-884
Author(s):  
E. N. Z̆ivanović ◽  
Momc̆ilo M. Pejović ◽  
Milić M. Pejović ◽  
N.T. ◽  
Nes̆ić
Keyword(s):  
Time Delay ◽  
Electrical Breakdown ◽  
Statistical Nature ◽  
Breakdown Time ◽  
Positive Ions

Statistical analysis of the electrical breakdown time delay distributions in krypton

2006 ◽  
Vol 13 (8) ◽  
pp. 083502 ◽  
Author(s):  
Čedomir A. Maluckov ◽  
Jugoslav P. Karamarković ◽  
Miodrag K. Radović ◽  
Momčilo M. Pejović
Keyword(s):  
Statistical Analysis ◽  
Time Delay ◽  
Electrical Breakdown ◽  
Breakdown Time

The application of convolution-based statistical model on the electrical breakdown time delay distributions in neon

2004 ◽  
Vol 11 (11) ◽  
pp. 5328-5334 ◽  
Author(s):  
Čedomir A. Maluckov ◽  
Jugoslav P. Karamarković ◽  
Miodrag K. Radović ◽  
Momčilo M. Pejović
Keyword(s):  
Time Delay ◽  
Statistical Model ◽  
Electrical Breakdown ◽  
Breakdown Time

scholarly journals Explanation of the memory effect in argon

2005 ◽  
Vol 3 (2) ◽  
pp. 95-107 ◽  
Author(s):  
Vidosav Markovic ◽  
Sasa Gocic ◽  
Suzana Stamenkovic
Keyword(s):  
Time Delay ◽  
Memory Effect ◽  
Electrical Breakdown ◽  
Relaxation Times ◽  
Metastable States ◽  
Effective Lifetime ◽  
Breakdown Time ◽  
Long Time ◽  
Argon Ions ◽  
Phase Models

Memory effect - the long time variation of the electrical breakdown time delay on the relaxation time td (?) was observed in argon 24 hours after relaxation times and explained by the long-lived metastable states remaining from the preceding glow. However, the quenching processes reducing the effective lifetime of metastable states several orders of magnitude below that relevant for the time scale of observation were neglected. By applying approximate gas phase models it was found that the early afterglow kinetics up to hundreds of milliseconds is dominated by the decay of molecular argon ions Ar2+ and the approximate value of their ambipolar diffusion coefficient is determined. After that, nitrogen atoms present as impurities and recombined on the cathode surface and/or field emission determine the breakdown time delay down to the cosmic rays and natural radioactivity level.

Electrical breakdown time delay in commercial gas-filled surge arresters

2015 ◽  
Author(s):  
Milic Pejovic ◽  
Sasa Dekic ◽  
Bojan Jovanovic ◽  
Irfan Fetahovic ◽  
Predrag Osmokrovic
Keyword(s):  
Time Delay ◽  
Electrical Breakdown ◽  
Breakdown Time ◽  
Surge Arresters

Processes in afterglow responsible for initiation of electrical breakdown in xenon at low pressure

2013 ◽  
Vol 79 (5) ◽  
pp. 641-646 ◽  
Author(s):  
MOMČILO M. PEJOVIĆ ◽  
IVANA V. SPASIĆ ◽  
MILIĆ M. PEJOVIĆ ◽  
NIKOLA T. NEŠIĆ ◽  
DRAGAN V. BRAJOVIĆ
Keyword(s):  
Ground State ◽  
Cosmic Radiation ◽  
Gamma Ray ◽  
Electrical Breakdown ◽  
Dominant Role ◽  
Secondary Emission ◽  
Breakdown Time ◽  
Positive Ions ◽  
Small Doses ◽  
Gamma Ray Irradiation

AbstractThe processes responsible for initiation of electrical breakdown in xenon-filled tube with two spherical iron electrodes at 2.7-mbar pressure have been analyzed. The analysis is based on the experimental data of electrical breakdown time delay as a function of afterglow period. It is shown that positive ions remaining from previous discharge, as well as positive ions created in mutual collisions of metastable atoms in afterglow, have a dominant role in secondary emission of electrons from the cathode which lead to initiation of breakdown in early afterglow. In late afterglow, dominant role in initiation of breakdown is taken by N(4S) atoms formed during the discharge by dissociation of ground state nitrogen molecules that are present as impurities in xenon. When the concentration of N(4S) atoms decreases sufficiently, the initiation of breakdown is caused by cosmic radiation. Small doses of gamma-ray irradiation also contribute to the initiation of breakdown, but only for large values of the afterglow period.

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