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Phys. Rev. B 94, 195305 (2016) - Petta Group
Phys. Rev. B 94, 195305 (2016) - Petta Group

PIC-MCC Simulations of Capacitive RF Discharges for Plasma Etching
PIC-MCC Simulations of Capacitive RF Discharges for Plasma Etching

... a significant peak at around normal incidence (or at an incident angle θ ~ 0 from the electrode surface normal), indicating that a large part of ions impact the electrode almost perpendicularly after being accelerated through the sheath. With increase in rf voltage, larger distributions are obtained ...
Ling_Zhou_mag_sensors
Ling_Zhou_mag_sensors

... Circuits are very advantageous for the measurement of resistance, inductance, and capacitance. ...
Document
Document

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Bose-Glass Phases of Ultracold Atoms due to Cavity Backaction Hessam Habibian,
Bose-Glass Phases of Ultracold Atoms due to Cavity Backaction Hessam Habibian,

... mode of a high-finesse resonator. The atoms are confined by an external optical lattice, whose period is incommensurate with the cavity mode wavelength, and are driven by a transverse laser, which is resonant with the cavity mode. While for pointlike atoms photon scattering into the cavity is suppre ...
Electrostatics
Electrostatics

... (marked -), signifying a slight deficiency. It is not known whether he tossed a coin before deciding to call the kind produced by rubbing glass "positive" and the other "resinous" type "negative" (rather than the other way around), but he might just as well have. Later, when electric batteries were ...
Electric current
Electric current

IJPAP 53(4) 225-229
IJPAP 53(4) 225-229

... Simulations have been carried out by varying the size of aperture from 3 mm to 8 mm. The temporal behaviour of discharge current for different aperture sizes has been shown in Fig. 3 keeping same all other parameters such as applied voltage, gas pressure, etc. The simulation results clearly show tha ...
Slides
Slides

... their ceramic has a smaller diameter, thus higher fields on the central tube. This leads me to believe that my geometry should be good for well over 600kV if theirs reaches 500. Both labs did have punch-thrus at the 480kV levels., though. Their processing resistor chains are about 2X longer than min ...
2-2.7µm single frequency tunable Sb–based lasers operating in CW
2-2.7µm single frequency tunable Sb–based lasers operating in CW

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Generation of X-Rays

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Stabilization of a cold cathode electron beam glow discharge
Stabilization of a cold cathode electron beam glow discharge

An LCLC resonant topology based filament power supply for
An LCLC resonant topology based filament power supply for

... ratings. Furthermore, a series resonant inverter cannot actually be developed due to the large parasitic capacitance generally existing in a high voltage transformer. As in a SPRC the output is controllable for no-load or light-loads, and light load efficiency is better, a series parallel LCLC combi ...
Nondestructive Submicron Dimensional Metrology
Nondestructive Submicron Dimensional Metrology

... backscattered and secondary electrons. However, it must be understood that this distinction is often arbitrary, especially at low beam energies. Backscattered electrons (BSE) are those electrons that have undergone either elastic or inelastic collisions with the sample and are re-emitted with an ene ...
AET Study Group Notes: DC Basics – Matter is anything that
AET Study Group Notes: DC Basics – Matter is anything that

... with either an abundance of electrons in its valence shell (positively charged) or missing electrons in their valence shell (negatively charged). When this happens, the electrical charge is built up until becomes close enough to a material with an opposite charge that it can ‘arc’ through the air an ...
Resistance - Purdue Physics
Resistance - Purdue Physics

... The task at hand is to develop a model for the temperature dependence of the resistance of a material. This can be accomplished by considering the temperature dependence of each term in Eq. 9. D. Temperature Dependence of Electrical Resistance for a Metal To evaluate the various factors appearing in ...
Electricity - Switch Energy Project
Electricity - Switch Energy Project

... An atom looks like the sun with the planets spinning around it. The center is called the nucleus. It is made of tiny protons and neutrons. Electrons move around the nucleus in energy levels, or shells, far from the nucleus. When an atom is in balance, it has the same number of protons and electrons. ...
Research Papers-Mechanics - The General Science Journal
Research Papers-Mechanics - The General Science Journal

... speeds are incomparable, electricity conduction has a long ago noticed analog analogyy with conduction of heat, which is easy to understand if to compare masses of electrons and atoms or molecules of heat conducting objects. Electric energy is transported from electron to electron, the one and the o ...
Configuration and Selection of Microwave Generators
Configuration and Selection of Microwave Generators

... mode, which achieves a higher peak output powers within a specified time period. Many pulse power supplies also have the capability to operate the magnetron in “CW” or continuous mode as well. ...
EMG2016 - Faculty of Engineering
EMG2016 - Faculty of Engineering

... BNC coax cable x 1 ...
(Electrical) equivalent circuits for microresonators
(Electrical) equivalent circuits for microresonators

... reading this you should be familiar with terms like effective mass or motional resistance – and some other RF-MEMS1 jargon. This tutorial is started with an example analysis of a beam resonator. After developing an equivalent circuit for it, a more general approach to electrical equivalents given. F ...
Ballistic Devices - University of Rochester ECE
Ballistic Devices - University of Rochester ECE

Here is the Original File
Here is the Original File

Propagation in dielectrics
Propagation in dielectrics

< 1 ... 44 45 46 47 48 49 50 51 52 ... 75 >

Klystron



A klystron is a specialized linear-beam vacuum tube, invented in 1937 by American electrical engineers Russell and Sigurd Varian, which is used as an amplifier for high radio frequencies, from UHF up into the microwave range. Low-power klystrons are used as oscillators in terrestrial microwave relay communications links, while high-power klystrons are used as output tubes in UHF television transmitters, satellite communication, and radar transmitters, and to generate the drive power for modern particle accelerators.In the klystron, an electron beam interacts with the radio waves as it passes through resonant cavities, metal boxes along the length of the tube. The electron beam first passes through a cavity to which the input signal is applied. The energy of the electron beam amplifies the signal, and the amplified signal is taken from a cavity at the other end of the tube. The output signal can be coupled back into the input cavity to make an electronic oscillator to generate radio waves. The gain of klystrons can be high, 60 dB (one million) or more, with output power up to tens of megawatts, but the bandwidth is narrow, usually a few percent although it can be up to 10% in some devices.A reflex klystron is an obsolete type in which the electron beam was reflected back along its path by a high potential electrode, used as an oscillator.The name klystron comes from the stem form κλυσ- (klys) of a Greek verb referring to the action of waves breaking against a shore, and the suffix -τρον (""tron"") meaning the place where the action happens. The name ""klystron"" was suggested by Hermann Fränkel, a professor in the classics department at Stanford University when the klystron was under development.
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