A two-dimensional drift-diffusion model of THz emission from n-GaAs and InAs surfaces in a magnetic field (Invited Paper)

2005 ◽  
Author(s):  
Kenneth J. Chau ◽  
Abdul Y. Elezzabi
Keyword(s):  
Magnetic Field ◽  
Diffusion Model ◽  
Two Dimensional ◽  
Drift Diffusion Model ◽  
Drift Diffusion

scholarly journals Начальные стадии формирования импульсного разряда в промежутке с геометрией острие-плоскость в предварительно ионизированном аргоне

2022 ◽  
Vol 48 (5) ◽  
pp. 43
Author(s):  
В.С. Курбанисмаилов ◽  
Д.В. Терешонок ◽  
Г.Б. Рагимханов ◽  
З.Р. Халикова
Keyword(s):  
Diffusion Model ◽  
Atmospheric Pressure ◽  
Initial Conditions ◽  
Ionization Wave ◽  
Two Dimensional ◽  
Drift Diffusion Model ◽  
Drift Diffusion

The study of the effect of the initial conditions on the features of the formation and development of the anodic ionization wave between two electrodes with a tip – plane gap geometry in argon at atmospheric pressure is performed on the basis of a two-dimensional axisymmetric drift-diffusion model.

scholarly journals Pre-earthquake magnetic pulses

2014 ◽  
Vol 2 (12) ◽  
pp. 7367-7381 ◽  
Author(s):  
J. Scoville ◽  
J. Heraud ◽  
F. Freund
Keyword(s):  
Magnetic Field ◽  
Diffusion Model ◽  
System Of Equations ◽  
Drift Diffusion Model ◽  
Transient Currents ◽  
Drift Diffusion ◽  
Electrical Currents ◽  
Long Wavelength ◽  
Electromagnetic Effects ◽  
Pass Through

Abstract. A semiconductor model of rocks is shown to describe unipolar magnetic pulses, a phenomenon that has been observed prior to earthquakes. These pulses are generated deep in the Earth's crust, in and around the Hypocentral volume, days or even weeks before Earthquakes. They are observable at the surface because their extremely long wavelength allows them to pass through kilometers of rock. Interestingly, the source of these pulses may be triangulated to pinpoint locations where stresses are building deep within the crust. We couple a semiconductor drift-diffusion model to a magnetic field in order to describe the electromagnetic effects associated with electrical currents flowing within rocks. The resulting system of equations is solved numerically and it is seen that a volume of rock may act as a diode that produces transient currents when it switches bias. These unidirectional currents are expected to produce transient unipolar magnetic pulses similar in form, amplitude, and duration to those observed before earthquakes, and this suggests that the pulses could be the result of geophysical semiconductor processes.

scholarly journals Informing cognitive abstractions through neuroimaging: The neural drift diffusion model.

2015 ◽  
Vol 122 (2) ◽  
pp. 312-336 ◽  
Author(s):  
Brandon M. Turner ◽  
Leendert van Maanen ◽  
Birte U. Forstmann
Keyword(s):  
Diffusion Model ◽  
Drift Diffusion Model ◽  
Drift Diffusion

Incorporating photon recycling into the analytical drift-diffusion model of high efficiency solar cells

2014 ◽  
Vol 116 (19) ◽  
pp. 194504 ◽  
Author(s):  
Matthew P. Lumb ◽  
Myles A. Steiner ◽  
John F. Geisz ◽  
Robert J. Walters
Keyword(s):  
Solar Cells ◽  
Diffusion Model ◽  
High Efficiency ◽  
Drift Diffusion Model ◽  
Drift Diffusion ◽  
High Efficiency Solar Cells ◽  
Photon Recycling
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