Study on the Effect of Altitude on the Corona Inception Field and the Ground-Level Total Electric Field Under HVdc Lines Using Bipolar Test Lines

2018 ◽  
Vol 33 (6) ◽  
pp. 3187-3195 ◽  
Author(s):  
Luxing Zhao ◽  
Jiayu Lu ◽  
Li Xie ◽  
Xiang Cui ◽  
Yong Ju
Keyword(s):  
Electric Field ◽  
Ground Level ◽  
Total Electric Field

Experiment Study and Design of Measurement System of the Total Electrical Field on the Ground Level under HVDC Transmission Lines

2011 ◽  
Vol 128-129 ◽  
pp. 1452-1455 ◽  
Author(s):  
Xin Rui Zhao ◽  
Tie Bing Lu ◽  
Yu Hong Dong
Keyword(s):  
Electric Field ◽  
Measurement System ◽  
Transmission Lines ◽  
Virtual Instrument ◽  
Ground Level ◽  
Electromagnetic Environment ◽  
Hvdc Transmission ◽  
Hvdc Transmission Lines ◽  
Total Electric Field ◽  
Made In

Based on the technology of virtual instrument, a set of measurement system of the total electric field on the ground level under HVDC transmission lines is developed. After the hardware and software system are built up, some tests are made in laboratory to show the validity of the system. Finally, experiment results are given and analyzed. The developed measurement system can be used to measure the total electric field on the ground level under HVDC transmission lines, and can provide support for the evaluation of the electromagnetic environment of the HVDC transmission lines.

scholarly journals Optical properties of c-Plane InGaN/GaN single quantum wells as a function of total electric field strength

2019 ◽  
Vol 58 (SC) ◽  
pp. SCCB09 ◽  
Author(s):  
George M. Christian ◽  
Stefan Schulz ◽  
Simon Hammersley ◽  
Menno J. Kappers ◽  
Martin Frentrup ◽  
...  
Keyword(s):  
Optical Properties ◽  
Field Strength ◽  
Electric Field ◽  
Quantum Wells ◽  
Electric Field Strength ◽  
Single Quantum ◽  
Total Electric Field

scholarly journals Multi-wavelength observation of cosmic-ray air-showers with CODALEMA/EXTASIS

2019 ◽  
Vol 210 ◽  
pp. 05003
Author(s):  
Antony Escudie ◽  
Didier Charrier ◽  
Richard Dallier ◽  
Daniel García-Fernández ◽  
Alain Lecacheux ◽  
...  
Keyword(s):  
Electric Field ◽  
Strong Electric Field ◽  
Radio Pulse ◽  
Cosmic Ray ◽  
Ground Level ◽  
Air Showers ◽  
Extensive Air Shower ◽  
Air Shower ◽  
Multi Wavelength ◽  
Electric Field Profile

Since 2003, significant efforts have been devoted to the understanding of the radio emission of extensive air shower in the range [20-200] MHz. Despite some studies led until the early nineties, the [1-10] MHz band has remained unused for 20 years. However, it has been measured by some pioneering experiments that extensive air shower emit a strong electric field in this band and that there is evidence of a large increase in the amplitude of the radio pulse at lower frequencies. The EXTASIS experiment, located within the Nançay Radioastronomy Observatory and supported by the CODALEMA experiment, aims to reinvestigate the [1-10] MHz band, and especially to study the so-called “Sudden Death” contribution, the expected electric field emitted by shower front when hitting the ground level. Currently, EXTASIS has confirmed some results obtained by the pioneering experiments, and tends to bring explanations to the other ones, for instance the role of the underlying atmospheric electric field. Moreover, CODALEMA has demonstrated that in the most commonly used frequency band ([20-80] MHz) the electric field profile of EAS can be well sampled, and contains all the information needed for the reconstruction of EAS: an automatic comparison between the SELFAS3 simulations and data has been developed, allowing us to reconstruct in an almost real time the primary cosmic ray characteristics.

Assessing The Risk Associated with Simultaneous Exposure To Mobile Communication Signals Within 900–2500 MHz in Nigeria

2020 ◽  
Author(s):  
B O Ayinmode ◽  
I P Farai
Keyword(s):  
Ionizing Radiation ◽  
Field Strength ◽  
Electric Field ◽  
Mobile Communication ◽  
Base Station ◽  
Simultaneous Exposure ◽  
Communication Signals ◽  
Frequency Bands ◽  
Maximum Value ◽  
Total Electric Field

Abstract In this study, the total exposure due to signals within GSM 900, GSM 1800, CDMA-1900 and 3G-2100 frequency bands at 200 m from the foot of 120, 100 and 80 base station masts in the Nigerian cities of Lagos, Ibadan and Abuja, respectively, was assessed. A calibrated hand-held spectrum analyser was used to measure the level of power (in dBm) of each signal within the mobile frequency bands. The exposure quotient associated with the combine electric field strengths from the various frequency bands in each city was estimated. The maximum value of total electric field strength at each point in Lagos, Ibadan and Abuja was 0.83 V/m, 0.53 V/m and 1.63 V/m, respectively. This study shows that the exposure quotient due to the simultaneous exposure to the four bands of mobile communication signals in each city is far less than one, as recommend by International Commission on Non-Ionizing Radiation Protection.

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