scholarly journals Calculation of Maximal Number of Areas of Longitudinal Periodic Localization of Drifting Electrons in Metallic Explorer with Electric Current of Conductivity

2021 ◽  
Vol 57 (4) ◽  
pp. 43-48
Author(s):  
M.I. Baranov ◽  
◽  
◽  
Keyword(s):  
Electromagnetic Field ◽  
Electric Current ◽  
Quantum Number ◽  
High Voltage ◽  
Approximate Calculation ◽  
Axial Flow ◽  
Quantum Mechanical ◽  
Wave Nature ◽  
Quantum Wave

The results of approximate calculation of the maximal value of the quantum number of n = nm for the quantized standing longitudinal electronic de Broglie half-waves λezn/2 = l0/n long and, accordingly, of the maximal number of nm of the quantized areas of the longitudinal periodic localization with the length of Δznh of drifting lone electrons in the cylindrical explorers of eventual sizes (long l0 and radius of r0) with the axial-flow current of conductivity of i0(t) of the indicated kinds and peak-temporal parameters (PTP) are presented, taking into account the quantum-wave nature of the electric current of conductivity of i0(t) of different kinds (permanent, variable, and impulsive) and PTP in the metallic explorers. The results of verification of the obtained calculations of the quantum-mechanical correlation for the determination of the quantum number nm confirm its possibility to be applied in such areas of engineering as high-voltage heavy-current impulsive technique and electrophysical treatment of metals by a strong electromagnetic field and by a pressure of a large impulsive current.

scholarly journals Determination of dV/dt and dI/dt characteristics for high voltage 4H-SiC Schottky diodes with different types of metal-polymeric packages

2020 ◽  
Vol 1679 ◽  
pp. 022045
Author(s):  
S B Rybalka ◽  
E A Kulchenkov ◽  
A A Demidov ◽  
N A Zhemoedov ◽  
A Yu Drakin ◽  
...  
Keyword(s):  
High Voltage ◽  
Schottky Diodes ◽  
Different Types

Spectrographic Analysis of Cast Iron Using Fused Buttons

1971 ◽  
Vol 25 (3) ◽  
pp. 342-344 ◽  
Author(s):  
John P. Cummings ◽  
Ronald H. Hall ◽  
Ronald J. Plenzler
Keyword(s):  
Weight Loss ◽  
Cast Iron ◽  
High Voltage ◽  
Analytical Method ◽  
White Cast Iron ◽  
Inert Atmosphere ◽  
Spectrographic Analysis ◽  
Analytical Results ◽  
Good Homogeneity

This paper presents an analytical method for the determination of minor metals in white cast iron fused buttons. This method enables the measurement of metals in cast iron with rapidity and excellent analytical results. Buttons of 40 g appear to be ideal but smaller button samples can be tolerated. The fused buttons have good homogeneity, very slight weight loss, and no significant change in composition. Metal cast spectrochemical samples are analyzed in an inert atmosphere utilizing a high voltage spark.

Determination of Dipole Spacing in Electrical Landfill Leakage Detection

2010 ◽  
Vol 171-172 ◽  
pp. 171-174
Author(s):  
Hong Cheng ◽  
Peng Kun Liu ◽  
Yu Ling Wang ◽  
Chang Xin Nai
Keyword(s):  
High Voltage ◽  
Direct Current ◽  
Current Method ◽  
Leakage Detection ◽  
High Voltage Direct Current ◽  
The Impact

The dipole spacing can directly affects the detecting sensitivity and accuracy in the landfill leakage detection by the high voltage direct current method. Based on the high voltage DC detecting model, the impact of dipole spacing on locating leaks is analyzed taking a single leak and multiple leaks as example. The results show that the greater the dipole spacing is, the higher the detecting sensitivity is; the smaller the dipole spacing is, the higher the detecting accuracy is. For multiple leaks, only one leak can be located when the dipole spacing is greater than the distance between the two leaks. In order to detect all leaks correctly, the dipole spacing should be smaller than the distance between the two leaks.

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