Influence of lightning discharges and geomagnetic activity variation rate on currents in buried pipelines and “pipe-ground” potential

Mapping Intimacies ◽

10.1117/12.2248712 ◽

2016 ◽

Author(s):

V. I. Kozlov ◽

R. R. Karimov ◽

A. A. Korsakov ◽

L. D. Tarabukina ◽

Yu. M. Grigoriev

Keyword(s):

Geomagnetic Activity ◽

Buried Pipelines ◽

Activity Variation ◽

Lightning Discharges ◽

Variation Rate ◽

Ground Potential

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The Day‐Night Difference and Geomagnetic Activity Variation of Energetic Electron Fluxes in Region of South Atlantic Anomaly

Space Weather ◽

10.1029/2020sw002479 ◽

2020 ◽

Vol 18 (9) ◽

Author(s):

L. Y. Li ◽

S. P. Zhou ◽

S. H. Wei ◽

J. Y. Yang ◽

J. A. Sauvaud ◽

...

Keyword(s):

Geomagnetic Activity ◽

Energetic Electron ◽

South Atlantic ◽

South Atlantic Anomaly ◽

Activity Variation

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V: A new index to represent the variation rate of geomagnetic activity

Earthquake Science ◽

10.1007/s11589-010-0731-9 ◽

2010 ◽

Vol 23 (4) ◽

pp. 343-348 ◽

Cited By ~ 3

Author(s):

Dongmei Yang ◽

Yufei He ◽

Chuanhua Chen ◽

Jiadong Qian

Keyword(s):

Geomagnetic Activity ◽

Variation Rate

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A New High Intensity Grid Cap for RCA-EMU-3 Electron Microscopes

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100101323 ◽

1968 ◽

Vol 26 ◽

pp. 316-317

Author(s):

George Christov ◽

Bolivar J. Lloyd

Keyword(s):

Electron Beam ◽

Electron Microscope ◽

High Voltage ◽

High Intensity ◽

Electron Gun ◽

Tungsten Filament ◽

Fluorescent Screen ◽

Electron Microscopes ◽

Pass Through ◽

Ground Potential

A new high intensity grid cap has been designed for the RCA-EMU-3 electron microscope. Various parameters of the new grid cap were investigated to determine its characteristics. The increase in illumination produced provides ease of focusing on the fluorescent screen at magnifications from 1500 to 50,000 times using an accelerating voltage of 50 KV.The EMU-3 type electron gun assembly consists of a V-shaped tungsten filament for a cathode with a thin metal threaded cathode shield and an anode with a central aperture to permit the beam to course the length of the column. The cathode shield is negatively biased at a potential of several hundred volts with respect to the filament. The electron beam is formed by electrons emitted from the tip of the filament which pass through an aperture of 0.1 inch diameter in the cap and then it is accelerated by the negative high voltage through a 0.625 inch diameter aperture in the anode which is at ground potential.

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