scholarly journals Numerical Study of Space Charge Effects in a Point Cathode Electron Gun: Distribution of Space Charge Density

2008 ◽  
Vol 6 ◽  
pp. 91-95 ◽  
Author(s):  
Ryo Iiyoshi
Keyword(s):  
Charge Density ◽  
Space Charge ◽  
Numerical Study ◽  
Space Charge Density ◽  
Electron Gun ◽  
Space Charge Effects ◽  
Charge Effects

Co-planar two-dimensional Metal-Insulator-Semiconductor Capacitor: Numerical study of the device electrostatics.

2017 ◽  
Author(s):  
Varun Bheemireddy
Keyword(s):  
Space Charge ◽  
High Performance ◽  
Numerical Study ◽  
2D Materials ◽  
Space Charge Density ◽  
Two Dimensional ◽  
Short Channel ◽  
Metal Insulator ◽  
Metal Insulator Semiconductor ◽  
New Family

The two-dimensional(2D) materials are highly promising candidates to realise elegant and e cient transistor. In the present letter, we conjecture a novel co-planar metal-insulator-semiconductor(MIS) device(capacitor) completely based on lateral 2D materials architecture and perform numerical study of the capacitor with a particular emphasis on its di erences with the conventional 3D MIS electrostatics. The space-charge density features a long charge-tail extending into the bulk of the semiconductor as opposed to the rapid decay in 3D capacitor. Equivalently, total space-charge and semiconductor capacitance densities are atleast an order of magnitude more in 2D semiconductor. In contrast to the bulk capacitor, expansion of maximum depletion width in 2D semiconductor is observed with increasing doping concentration due to lower electrostatic screening. The heuristic approach of performance analysis(2D vs 3D) for digital-logic transistor suggest higher ON-OFF current ratio in the long-channel limit even without third dimension and considerable room to maximise the performance of short-channel transistor. The present results could potentially trigger the exploration of new family of co-planar at transistors that could play a signi significant role in the future low-power and/or high performance electronics.<br>

scholarly journals Space Charge Effects in Noble-Liquid Calorimeters and Time Projection Chambers

Instruments ◽  
2021 ◽  
Vol 5 (1) ◽  
pp. 9
Author(s):  
Sandro Palestini
Keyword(s):  
Space Charge ◽  
Scaling Laws ◽  
Relative Size ◽  
Design Solution ◽  
Space Charge Effects ◽  
Charge Effects ◽  
Time Projection Chambers ◽  
Drift Length ◽  
Calibration Methods ◽  
Time Projection

The subject of space charge in ionization detectors is reviewed, showing how the observations and the formalism used to describe the effects have evolved, starting with applications to calorimeters and reaching recent, large time-projection chambers. General scaling laws, and different ways to present and model the effects are presented. The relations between space-charge effects and the boundary conditions imposed on the side faces of the detector are discussed, together with a design solution that mitigates some of the effects. The implications of the relative size of drift length and transverse detector size are illustrated. Calibration methods are briefly discussed.

scholarly journals Numerical investigation of space charge effects on the positions of beamlets for transversely split beams

2017 ◽  
Vol 20 (12) ◽  
Author(s):  
S. Machida ◽  
C. Prior ◽  
S. Gilardoni ◽  
M. Giovannozzi ◽  
A. Huschauer ◽  
...  
Keyword(s):  
Space Charge ◽  
Numerical Investigation ◽  
Space Charge Effects ◽  
Charge Effects

scholarly journals Space charge effects on the third order coupled resonance

2017 ◽  
Vol 20 (8) ◽  
Author(s):  
Giuliano Franchetti ◽  
Simone Gilardoni ◽  
Alexander Huschauer ◽  
Frank Schmidt ◽  
Raymond Wasef
Keyword(s):  
Space Charge ◽  
Space Charge Effects ◽  
Third Order ◽  
Charge Effects ◽  
The Third

scholarly journals Space-Charge Effects in the Field-Assisted Thermionic Emission from Nonuniform Cathodes

2021 ◽  
Vol 15 (1) ◽  
Author(s):  
Anna Sitek ◽  
Kristinn Torfason ◽  
Andrei Manolescu ◽  
Ágúst Valfells
Keyword(s):  
Space Charge ◽  
Thermionic Emission ◽  
Space Charge Effects ◽  
Charge Effects

Space charge effects in the Paul trap

1995 ◽  
Vol 2 (10) ◽  
pp. 3569-3572 ◽  
Author(s):  
K. Avinash ◽  
A. K. Agarwal ◽  
M. R. Jana ◽  
A. Sen ◽  
P. K. Kaw
Keyword(s):  
Space Charge ◽  
Paul Trap ◽  
Space Charge Effects ◽  
Charge Effects
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