scholarly journals Parallel electric field structures associated with the low-frequency oscillations in the auroral plasma

2006 ◽  
Vol 58 (9) ◽  
pp. 1227-1232 ◽  
Author(s):  
R. V. Reddy ◽  
S. V. Singh ◽  
G. S. Lakhina ◽  
R. Bharuthram
Keyword(s):  
Electric Field ◽  
Low Frequency ◽  
Parallel Electric Field ◽  
Low Frequency Oscillations ◽  
Auroral Plasma

scholarly journals Electron cyclotron waves in the presence of parallel electric fields in the Earth's auroral plasma

1997 ◽  
Vol 15 (1) ◽  
pp. 24-28 ◽  
Author(s):  
S. Kumar ◽  
S. K. Dixit ◽  
A. K. Gwal
Keyword(s):  
Growth Rate ◽  
Electric Field ◽  
Electric Fields ◽  
Electron Cyclotron ◽  
Wave Excitation ◽  
Parallel Electric Field ◽  
Excitation Process ◽  
Auroral Plasma ◽  
Auroral Electrons ◽  
Electron Cyclotron Waves

Abstract. The electron cyclotron waves that originate at low altitudes (<0.5 RE) and observed by ground facilities have been studied in the presence of a weak parallel electric field in auroral magnetoplasma consisting of trapped energetic auroral electrons and cold background electrons of ionospheric origin. The model distribution for auroral trapped electrons is taken as Maxwellian ring distribution. An expression for the growth rate has been obtained in the presence of parallel electric field assuming that the real frequency in the whistler mode is not affected by the presence of the electric field. The results show that waves grow (or damp) in amplitude for a parallel (or antiparallel) electric field. The influence of the electric field is more pronounced at a shorter wavelength spectrum. An increase in population of energetic electrons increases the growth rate and thus, plays a significant role in the wave excitation process in the auroral regions.

Nonlinear low-frequency structures in an electron–positron–ion plasma

2012 ◽  
Vol 78 (5) ◽  
pp. 545-551 ◽  
Author(s):  
S. MOOLLA ◽  
I. J. LAZARUS ◽  
R. BHARUTHRAM
Keyword(s):  
Electric Field ◽  
Acoustic Waves ◽  
Rest Frame ◽  
Low Frequency ◽  
Satellite Observations ◽  
Parallel Electric Field ◽  
Ion Acoustic Waves ◽  
Ion Plasma ◽  
Electron Positron ◽  
Electrons And Positrons

AbstractNonlinear ion cyclotron and ion-acoustic waves have been studied in an electron–positron–ion plasma. Using Boltzmann distributions for the electrons and positrons and fluid equations for the ions, a set of nonlinear equations in the rest frame of the propagating wave is derived and numerically solved for the electric field. A scan of parameter space reveals a range of solutions for the parallel electric field, from sinusoidal to sawtooth to highly spiky waveforms. The results are compared with satellite observations.

Development of a Low Frequency Electric Field Probe Integrating Data Acquisition and Storage

2020 ◽  
Vol E103.C (8) ◽  
pp. 345-352
Author(s):  
Zhongyuan ZHOU ◽  
Mingjie SHENG ◽  
Peng LI ◽  
Peng HU ◽  
Qi ZHOU
Keyword(s):  
Electric Field ◽  
Data Acquisition ◽  
Low Frequency ◽  
Frequency Electric Field ◽  
Electric Field Probe ◽  
And Storage

PEMANFAATAN RADIASI ENERGI TEGANGAN 150 KV UNTUK LAMPU LED PENERANGAN JALAN

Jurnal Teknik ◽  
2018 ◽  
Vol 7 (1) ◽  
Author(s):  
Mauludi Manfaluthy
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
High Voltage ◽  
Low Frequency ◽  
Energy Utilization ◽  
World Health ◽  
Electromagnetic Signals ◽  
Health Organization ◽  
The Magnetic Field ◽  
Low Frequency Waves

WHO (World Health Organization) concludes that not much effect is caused by electric field up to 20 kV / m in humans. WHO standard also mentions that humans will not be affected by the magnetic field under  100 micro tesla and that the electric field will affect the human body with a maximum standard of 5,000 volts per meter. In this study did not discuss about the effect of high voltage radiation SUTT (High Voltage Air Channel) with human health. The research will focus on energy utilization of SUTT radiation. The combination of electric field and magnetic field on SUTT (70-150KV) can generate electromagnetic (EM) and radiation waves, which are expected to be converted to turn on street lights around the location of high voltage areas or into other forms. The design of this prototype works like an antenna in general that captures electromagnetic signals and converts them into AC waves. With a capacitor that can store the potential energy of AC and Schottky diode waves created specifically for low frequency waves, make the current into one direction (DC). From the research results obtained the current generated from the radiation is very small even though the voltage is big enough.Keywords : Radiance Energy, Joule Thief, and  LED Module.

Sign in / Sign up

Export Citation Format

Share Document