Influence of Boundary Conditions on High-Field Domains in Gunn Diodes

1969 ◽  
Vol 186 (3) ◽  
pp. 793-800 ◽  
Author(s):  
K. W. Böer ◽  
G. Döhler
Keyword(s):  
Boundary Conditions ◽  
High Field ◽  
Gunn Diodes

Observations of high-field domains in GaxIn1 − xSb Gunn diodes

1977 ◽  
Vol 13 (13) ◽  
pp. 379
Author(s):  
Mitsuo Kawashima ◽  
Kimihiro Ohta ◽  
Shoei Kataoka
Keyword(s):  
High Field ◽  
Gunn Diodes

Slow high-field domains in Gunn diodes with two kinds of carriers

1974 ◽  
Vol 7 (9) ◽  
pp. 1279-1286
Author(s):  
B L Gelmont ◽  
M S Shur
Keyword(s):  
High Field ◽  
Gunn Diodes

scholarly journals An Algorithm to Develop Lumped Model for Gunn-Diode Dynamics

1998 ◽  
Vol 21 (1) ◽  
pp. 17-21
Author(s):  
Umesh Kumar
Keyword(s):  
Drift Velocity ◽  
Nonlinear Diffusion ◽  
High Field ◽  
Gunn Diode ◽  
Lumped Model ◽  
Gunn Diodes ◽  
Diffusion Effects

A nonlinear lumped model can be developed for Gunn-Diodes to describe the diffusion effects as the domain travels from cathode to anode of a Gunn-Diode. The model describes the domain extinction and nucleation phenomena. It allows the user to specify arbitrary nonlinear drift velocity V(E) and nonlinear diffusion D(E).The model simulates arbitrary Gunn-Diode circuits operating in any matured high field domain or in the LSA mode.Here we have constructed an algorithm to lead to development of this model

High-field layers in planar Gunn diodes

1974 ◽  
Vol 7 (3) ◽  
pp. L49-L52 ◽  
Author(s):  
Katsuhiko Kurumada ◽  
Takashi Mizutani ◽  
Masatomo Fujimoto
Keyword(s):  
High Field ◽  
Gunn Diodes

Use of the Magnetostatic Analogue In Electromagnetic Lens Engineering

1970 ◽  
Vol 28 ◽  
pp. 360-361
Author(s):  
John W. Coleman
Keyword(s):  
Boundary Conditions ◽  
High Performance ◽  
Force Fields ◽  
Optical Design ◽  
Direct Conversion ◽  
Design Engineering ◽  
Design Data ◽  
Scalar Potentials ◽  
Geometric Elements ◽  
At Will

In the design engineering of high performance electromagnetic lenses, the direct conversion of electron optical design data into drawings for reliable hardware is oftentimes difficult, especially in terms of how to mount parts to each other, how to tolerance dimensions, and how to specify finishes. An answer to this is in the use of magnetostatic analytics, corresponding to boundary conditions for the optical design. With such models, the magnetostatic force on a test pole along the axis may be examined, and in this way one may obtain priority listings for holding dimensions, relieving stresses, etc..The development of magnetostatic models most easily proceeds from the derivation of scalar potentials of separate geometric elements. These potentials can then be conbined at will because of the superposition characteristic of conservative force fields.

Study of segregation in La1.8Sr0.2CuO4 superconductor by STEM-EDS microanalysis

1987 ◽  
Vol 45 ◽  
pp. 54-55
Author(s):  
T. F. Kelly ◽  
P. J. Lee ◽  
E. E. Hellstrom ◽  
D. C. Larbalestier
Keyword(s):  
Rare Earth ◽  
High Field ◽  
Transport Current ◽  
Total Thickness ◽  
New Class ◽  
Ceramic Superconductors ◽  
Current Densities ◽  
Group Ii ◽  
Eds Microanalysis

Recently there has been much excitement over a new class of high Tc (>30 K) ceramic superconductors of the form A1-xBxCuO4-x, where A is a rare earth and B is from Group II. Unfortunately these materials have only been able to support small transport current densities 1-10 A/cm2. It is very desirable to increase these values by 2 to 3 orders of magnitude for useful high field applications. The reason for these small transport currents is as yet unknown. Evidence has, however, been presented for superconducting clusters on a 50-100 nm scale and on a 1-3 μm scale. We therefore planned a detailed TEM and STEM microanalysis study in order to see whether any evidence for the clusters could be seen.A La1.8Sr0.2Cu04 pellet was cut into 1 mm thick slices from which 3 mm discs were cut. The discs were subsequently mechanically ground to 100 μm total thickness and dimpled to 20 μm thickness at the center.

High-field magnetoluminescence of ZnSe quantum wires

1998 ◽  
Vol 184-185 (1-2) ◽  
pp. 339-342 ◽  
Author(s):  
L Parthier
Keyword(s):  
High Field ◽  
Quantum Wires

A digital vocal tract simulator with boundary conditions at lips and glottis

1981 ◽  
Vol 64 (11) ◽  
pp. 18-26 ◽  
Author(s):  
Tetsuya Nomura ◽  
Nobuhiro Miki ◽  
Nobuo Nagai
Keyword(s):  
Boundary Conditions ◽  
Vocal Tract
Sign in / Sign up

Export Citation Format

Share Document