Electron acceleration by a localized electric field

1977 ◽  
Vol 20 (7) ◽  
pp. 1074 ◽  
Author(s):  
C. P. DeNeef ◽  
J. S. DeGroot
Keyword(s):  
Electric Field ◽  
Electron Acceleration

BALLISTIC ELECTRON ACCELERATION NEGATIVE-DIFFERENTIAL-CONDUCTIVITY DEVICES

2007 ◽  
Vol 17 (01) ◽  
pp. 173-176 ◽  
Author(s):  
BARBAROS ASLAN ◽  
LESTER F. EASTMAN ◽  
WILLIAM J. SCHAFF ◽  
XIAODONG CHEN ◽  
MICHAEL G. SPENCER ◽  
...  
Keyword(s):  
Experimental Data ◽  
Electric Field ◽  
Electron Acceleration ◽  
Negative Differential Conductivity ◽  
Differential Conductivity ◽  
Experimental Development ◽  
Ballistic Electron

We present the experimental development and characterization of GaN ballistic diodes for THz operation. Fabricated devices have been described and gathered experimental data is discussed. The major problem addressed is the domination of the parasitic resistances which significantly reduce the accelerating electric field across the ballistic region (intrinsic layer).

Electron acceleration by a stochastic electric field in the atmospheric layer

2003 ◽  
Vol 10 (8) ◽  
pp. 3290-3296 ◽  
Author(s):  
Victor Y. Trakhtengerts ◽  
Dmitriy I. Iudin ◽  
Anton V. Kulchitsky ◽  
Masashi Hayakawa
Keyword(s):  
Electric Field ◽  
Electron Acceleration ◽  
Atmospheric Layer

scholarly journals Thermal electron acceleration by localized bursts of electric field in the radiation belts

2014 ◽  
Vol 41 (16) ◽  
pp. 5734-5739 ◽  
Author(s):  
A. V. Artemyev ◽  
O. V. Agapitov ◽  
F. Mozer ◽  
V. Krasnoselskikh
Keyword(s):  
Electric Field ◽  
Electron Acceleration ◽  
Radiation Belts ◽  
Thermal Electron

Relativistic electron acceleration at Saturn and Jupiter by global scale electric fields

2020 ◽  
Author(s):  
Elias Roussos ◽  
Yixin Hao ◽  
Yixin Sun ◽  
Ying Liu ◽  
Peter Kollmann ◽  
...  
Keyword(s):  
Electric Field ◽  
Energy Range ◽  
Electron Acceleration ◽  
Global Scale ◽  
Radiation Belts ◽  
Relativistic Electrons ◽  
Convection Pattern ◽  
Energy Bands ◽  
Magnetospheric Convection ◽  
Rapid Injection

<p>Electrons in Saturn's radiation belts are distributed along discrete energy bands, a feature often attributed to the energisation of charged particles following their rapid injection towards a planet's inner magnetosphere. However, the mechanism that could deliver electrons deep into Saturn's radiation belts remains elusive, as for instance, the efficiency of magnetospheric interchange injections drops rapidly for electrons above 100 keV and at low L-shells. Using Cassini measurements and simulations we demonstrate that the banding derives from slow radial plasma flows associated to a persistent convection pattern in Saturn's magnetosphere (noon to midnight electric field), making the need for rapid injections obsolete. This transport mode impacts electron acceleration throughout most the planet's radiation belts and at quasi and fully relativistic energies, suggesting that this global scale electric field is ultimately responsible for the bulk of the highest energy electrons near the planet. We also present evidence from Galileo and Juno that the influence of Jupiter's inner magnetospheric convection pattern on its radiation belts is fundamentally similar to Saturn's but affects its higher energy ultra-relativistic electrons. The comparison of the two radiation belts indicates there is an energy range above which there is a transition from interchange to global scale electric field driven electron acceleration. This transiroty energy range can be scaled by the two planets' magnetic moment and strength of corotation, allowing us to study these two systems in complement.</p>

Electron Acceleration due to the Synergetic Effect of DC Electric Field and Waves

1998 ◽  
Vol T75 (1) ◽  
pp. 142
Author(s):  
I. F. Potapenko ◽  
A. S. de Assis ◽  
C. A. de Azevedo
Keyword(s):  
Electric Field ◽  
Synergetic Effect ◽  
Electron Acceleration ◽  
Dc Electric Field

BALLISTIC ELECTRON ACCELERATION NEGATIVE-DIFFERENTIAL-CONDUCTIVITY DEVICES

2006 ◽  
Vol 16 (02) ◽  
pp. 437-441
Author(s):  
Lester F. Eastman ◽  
William J. Schaff ◽  
Ho-Young Cha ◽  
Xiao-Dong Chen ◽  
Michael G. Spencer ◽  
...  
Keyword(s):  
Electric Field ◽  
Electron Acceleration ◽  
Finite Energy ◽  
High Electric Field ◽  
Negative Differential Conductivity ◽  
Differential Conductivity ◽  
Ballistic Electron ◽  
Drift Conditions ◽  
On Chip

A short drift distance N - I - N device, with high electric field, allows ballistic electron accelerations and drift. Conditions can be enhanced by using a heterojunction to launch electrons at finite energy. Initial I(V) results without the heterojunctions are presented, as well as the design of a structure which has the heterostructure, projected results are speculated upon, along with an on-chip circuit being used.

scholarly journals Effects on magnetic reconnection of a density asymmetry across the current sheet

2008 ◽  
Vol 26 (8) ◽  
pp. 2471-2483 ◽  
Author(s):  
K. G. Tanaka ◽  
A. Retinò ◽  
Y. Asano ◽  
M. Fujimoto ◽  
I. Shinohara ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
Magnetic Reconnection ◽  
Current Sheet ◽  
Three Dimensional ◽  
Flow Region ◽  
Electron Acceleration ◽  
Particle In Cell ◽  
Line Structure ◽  
Simulation Results

Abstract. The magnetopause (MP) reconnection is characterized by a density asymmetry across the current sheet. The asymmetry is expected to produce characteristic features in the reconnection layer. Here we present a comparison between the Cluster MP crossing reported by Retinò et al. (2006) and virtual observations in two-dimensional particle-in-cell simulation results. The simulation, which includes the density asymmetry but has zero guide field in the initial condition, has reproduced well the observed features as follows: (1) The prominent density dip region is detected at the separatrix region (SR) on the magnetospheric (MSP) side of the MP. (2) The intense electric field normal to the MP is pointing to the center of the MP at the location where the density dip is detected. (3) The ion bulk outflow due to the magnetic reconnection is seen to be biased towards the MSP side. (4) The out-of-plane magnetic field (the Hall magnetic field) has bipolar rather than quadrupolar structure, the latter of which is seen for a density symmetric case. The simulation also showed rich electron dynamics (formation of field-aligned beams) in the proximity of the separatrices, which was not fully resolved in the observations. Stepping beyond the simulation-observation comparison, we have also analyzed the electron acceleration and the field line structure in the simulation results. It is found that the bipolar Hall magnetic field structure is produced by the substantial drift of the reconnected field lines at the MSP SR due to the enhanced normal electric field. The field-aligned electrons at the same MSP SR are identified as the gun smokes of the electron acceleration in the close proximity of the X-line. We have also analyzed the X-line structure obtained in the simulation to find that the density asymmetry leads to a steep density gradient in the in-flow region, which may lead to a non-stationary behavior of the X-line when three-dimensional freedom is taken into account.

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