scholarly journals Impact of Discharge Current rate of High-current Low-inductance Vacuum Spark on Submicron size Structure in Electrode Surface Area

2015 ◽  
Vol 71 ◽  
pp. 160-164 ◽  
Author(s):  
S.A. Sarantsev ◽  
Ya.M. Dvoyeglazov ◽  
I.F. Raevskiy
Keyword(s):  
Surface Area ◽  
Discharge Current ◽  
Electrode Surface ◽  
Size Structure ◽  
High Current ◽  
Submicron Size ◽  
Vacuum Spark

scholarly journals Экспериментальное обнаружение признаков кулоновского взрыва в плазме микропинча

2019 ◽  
Vol 45 (6) ◽  
pp. 50
Author(s):  
А.Н. Долгов ◽  
Н.А. Клячин ◽  
Д.Е. Прохорович
Keyword(s):  
Discharge Current ◽  
Symmetry Axis ◽  
Plasma Channel ◽  
Coulomb Explosion ◽  
High Current ◽  
Ion Energies ◽  
Vacuum Spark

AbstractA flow of ions with energies of about 3 MeV propagating in the direction perpendicular to the symmetry axis of discharge has been detected in high-current low inductance vacuum spark. Estimations show that the measured ion energies quite well correspond to the value that can be achieved as a result of “Coulomb explosion” of the waist of a plasma channel of discharge current at the stage preceding its radiation compression.

Galvanostatic dissolution of mercury from the surface of glassy carbon into thiocyanate solution

1980 ◽  
Vol 45 (1) ◽  
pp. 169-178 ◽  
Author(s):  
František Opekar ◽  
Karel Holub
Keyword(s):  
Glassy Carbon ◽  
Electrode Surface ◽  
High Current Density ◽  
High Current ◽  
Nernst Equation ◽  
Potential Oscillations ◽  
Thiocyanate Solution ◽  
Theoretical Assumptions ◽  
Solution Proceeds ◽  
Dissolution Current

The galvanostatic dissolution of mercury from the surface of glassy carbon into a thiocyanate solution proceeds in accord with theoretical assumptions, as manifested by the constant product of the dissolution current and transition time. Under certain relations between the amount of oxidised mercury and concentration of thiocyanate at the electrode surface, however, a small part of the mercury dissolves at more positive potentials than correspond to the Nernst equation. This dissolution can be accompanied by potential oscillations. The anomalous behaviour is elucidated by the concept about coverage of a certain part of mercury with a film of sparingly soluble compounds of SCN- ions with mercury. This film is formed at the end of the galvanostatic dissolution on certain places of the electrode surface covered with mercury droplets, where SCN- ions are much exhausted as a result of a high current density.

Technical and Practical Aspects of Invasive Recordings and Brain Stimulation

2018 ◽  
pp. 26-37
Author(s):  
Gholam K. Motamedi ◽  
Jean Gotman ◽  
Ronald P. Lesser
Keyword(s):  
Charge Density ◽  
Surface Area ◽  
Brain Stimulation ◽  
Electrode Surface ◽  
Cortical Stimulation ◽  
Basic Principles ◽  
Depth Electrodes ◽  
Cortical Stimulation Mapping ◽  
Drug Resistant Epilepsy ◽  
Intracranial Electrodes

This chapter discusses the technical and practical issues involved in invasive recording and cortical stimulation mapping in patients with drug-resistant epilepsy. It reviews the way in which EEG signals are generated, circumstances when intracranial electrodes are needed, and how such electrodes operate. It also discusses the basic principles of cortical stimulation mapping and different methods of using intracranial electrodes for stimulation purposes, and relevant concepts involved in the process such as charge density and electrode surface area. It reviews different electrodes used for mapping including subdural surface electrodes and depth electrodes.

Mechanism of electrode surface damage and material removal in high current discharges

1986 ◽  
Vol 22 (6) ◽  
pp. 1799-1803 ◽  
Author(s):  
A. Watson ◽  
A. Donaldson ◽  
K. Ikuta ◽  
M. Kristiansen
Keyword(s):  
Electrode Surface ◽  
Material Removal ◽  
Surface Damage ◽  
High Current
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