Last edited by Aragal
Tuesday, May 5, 2020 | History

2 edition of Explosive electron emission found in the catalog.

Explosive electron emission

G. A. Mesiпё aпёЎtпё sпёЎ

Explosive electron emission

by G. A. Mesiпё aпёЎtпё sпёЎ

  • 209 Want to read
  • 8 Currently reading

Published by URO-Press in Ekaterinburg .
Written in English

    Subjects:
  • Electrons -- Emission.,
  • Field emission cathodes.,
  • Field emission.

  • Edition Notes

    StatementG.A. Mesyats.
    Classifications
    LC ClassificationsQC793.5.E627 M467 1998
    The Physical Object
    Paginationix, 239 p. :
    Number of Pages239
    ID Numbers
    Open LibraryOL21351187M
    ISBN 105769108815

    Vaisburd, DI & Tukhfatulin, TA , Explosive, critical electron emission from dielectric induced by high-current-density electron beam injection; Theoretical and computer simulation. in J Wetzer (ed.), International Symposium on Discharges and Electrical Insulation in Vacuum, ISDEIV. vol. 1, IEEE, Piscataway, NJ, United States, pp. This laser-induced explosive electron emission (EEE) from Ge was characterized by its voltage-, laser power- and hν-sensitivity. The analysis of the macroscopic surface damage caused by the EEE is included as well. Moreover, we have carried out first direct measurements of electron energy distributions produced during the EEE from the Ge samples.

    II. ELECTRON EMISSION High-current electron beams are generated in relativis-tic vacuum diodes, composed of a cathode and an an-ode, through explosive electron emission (see fig.1). The mechanism of the explosive electron emission is as fol-lows [25–27]: once the voltage is applied across the elec-trodes of the relativistic diode, the field. There has been much research on the explosive electron emission mechanism demonstrating that a current density of 10{sup 8}–10{sup 9 }A/cm{sup 2} is necessary for a micropoint to explode in several nanoseconds and the micropoint size is in micron-scale according .

    title = "measurements of plasma parameters in diode with explosive electron emission by thomson scattering method.", abstract = "An investigation is conducted of the plasma obtained in a pulse vacuum diode with a cold cathode through which pF capacity, which had been preliminary charged up to kV, was discharged. emission to explosive electron emission is a self-consistent description of the processes at the plasma front of the expanding cathode flare. Therefore, the goal of the work was to construct a self-consistent model based on the electron density functional theory (DFT) [3, 4] which would allow one to predict the.


Share this book
You might also like
The real Siberia

The real Siberia

Iconography of the thousand Buddhas

Iconography of the thousand Buddhas

Badby parish appraisal 1991-1993.

Badby parish appraisal 1991-1993.

friendly stars

friendly stars

Intentional learning at its best

Intentional learning at its best

Port of entry of New Orleans.

Port of entry of New Orleans.

Letters from General Rosecrans! to the democracy of Indiana

Letters from General Rosecrans! to the democracy of Indiana

Burkes Philosophical inquiry into the origin of our ideas of the sublime and beautiful

Burkes Philosophical inquiry into the origin of our ideas of the sublime and beautiful

History of Photography.

History of Photography.

The state, capital and economic policy

The state, capital and economic policy

What every supervisor should know

What every supervisor should know

Requirements for vocational teacher training and certification in trades and industries in the various states and territories

Requirements for vocational teacher training and certification in trades and industries in the various states and territories

Explosive electron emission by G. A. Mesiпё aпёЎtпё sпёЎ Download PDF EPUB FB2

Explosive electron emission [Book Review] A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or. The authors used these results to identify a series of steps in the vacuum breakdown phenomenon.

They were the first to discover and describe the explosive electron emission phenomenon and to show its fundamental role in the spark and the arc stages of a discharge. The information in this book may encourage the reader to design new experiments. Written by a recognized authority in the field, with Explosive electron emission book in both electron emission physics and electron beam physics, An Introduction to Electron Emission provides an in-depth look at the physics behind thermal, field, photo, and secondary electron emission mechanisms, how that physics affects the beams that result through space charge and emittance growth, and explores the physics behind their Cited by: This all-embracing book covers gas, laser, semiconductor, and magnetic circuit elements, the phenomenon of explosive electron emission discovered by the author, diodes of various types, including semiconductor diodes based on the SOS effect discovered with participation of the author, and methods of production of various types of high-power pulsed radiation.

The high-current, cold-cathode diode which is distinguished by non- self-convergent electron flow has been studied to define operative electron emission mechanisms, to determine the dominant plasma phenomena within the interelectrode volume, to classify the modes of electron flow, and to verify the Friedlander beam convergence criterion.

The notions about the explosive emission ion as a cyclical process with a characteristic time of about s are developed. Published in: IEEE Transactions on Electrical Insulation (Volume: EI, Issue: 4, Aug. ) Article #: Page (s): - Organic Chemistry of Explosives is the first text to bring together the essential methods and routes used for the synthesis of organic explosives in a single volume.

Assuming no prior knowledge, the book discusses everything from the simplest mixed acid nitration of toluene, to the complex synthesis of highly energetic caged nitro compounds. An explanation is given to the results of an experiment on studying the explosive electron emission in a wire-cathode diode where a strongly nonuniform energy deposition into the wire material was.

A systematic discussion is given of questions of thermionic field emission of electrons from the metal, energy dissipation in cathode micropoints, explosive evaporation of the points, and formation of localized plasmas–cathode flares, which stimulate a rapid increase in electron emission from the cathode.

A discussion is given of questions associated with study of the removal of cathode material in the Cited by: The laws governing the removal of electrons from the cathode flare plasma are discussed, as well as the mechanism of electron emission from the metal to the cathode flare plasma. A separate section is devoted to the use of explosive emission in high-current electron Cited by:   Abstract: Relativistic electron beam generation studies have been carried out in LIA system through explosive electron emission for various cathode materials.

This paper presents the emission properties of different cathode materials at peak diode voltages varying from 10 to kV and at peak current levels from to kA in a single pulse duration of by: 3. We have investigated the physical mechanisms involved in the explosive electron emission process for dielectric cathode materials such as velvet.

We have determined that explosive emission from velvet is initiated by a surface flashover mechanism when the electric field exceeds 16 kV/cm. We have also measured the characteristic polarization time of velvet to be 90 by: Therefore, it is not just electron emission but emission of electrons and ions, and we simply refer to the process as explosive emission.

Mesyats and others [13–15] extensively studied explosive emission and concluded that a minimum amount of energy needs to be invested to explode (ignite) an emission. Since the discovery of explosive electron emission 40 years ago, the overwhelming majority of investigations of this phenomenon have been performed with solid-state metal cathodes.

At the same time, liquid-metal pool point cathodes, by virtue of some favorable properties, allow one to perform more reliable physical experiments. The peculiarities of liquid-metal cathodes are related to the.

The emission threshold of explosive emission cathodes (EECs) is an important factor for beam quality. It can affect the explosive emission delay time, the plasma expansion process on the cathode surface, and even the current amplitude when the current is not fully space-charge-limited.

This paper researches the influence of the emission threshold of an annular EEC on the current waveform in a Cited by: 8. Present-day high power microwave devices suffer from a lack of reliable, reproducible cathodes for generating the requisite GW-level electron beam in a vacuum. The study of cathodic processes, especially the discovery of explosive electron emission, has made it possible to propose a new model in which previous anomalies turned into regular features.

This became possible owing to experimental studies and the solution of a number of applied tasks associated with the development of high-current by: 6. One can put the emitter back into the initial state by a series (about 10) of single explosive emission pulses.

As a result, the electron emission level is restored (Fig. (a)). Discussion. Graphite is a popular material for the explosive emission cathodes because of a high stability and practically unlimited time by: The secondary electron emission with coefficientγ= is taken into account.

We assume that the magnetic fieldB is constant in space and is inclined to the wall at the angleθ =8 o. The high-density electron flow is defined from central small area of wall ( m m≤≤y) to take into consideration the explosive electron emission. Experiments were conducted to study current-extraction instability in a diode operating in the explosive emission mode.

It is shown that the formation of current bursts is associated with nonuniformity of the feeding of cathode material into the cathode-jet plasma. In a specified time interval, the emitting surface of the plasma propagates with a velocity exceeding plasma expansion velocity, 2 Cited by: 8.

Since the discovery of explosive electron emission (EEE) 40 years ago, the overwhelming majority of investigations of this phenomenon have been performed with solid-state metal cathodes. At the same time, liquid-metal (LM) pool point cathodes, by virtue of some favorable properties, allow one to perform more reliable physical experiments.photoemitters and pulsed ferroelectric electron emitters with high current density.

generation of uniform hydrogen anode plasma layers from hydrogenated ti-pd films. a laser-produced lithium ion source for pulsed-power inertial confinement fusion.

computer simulation of explosive electron emission .The role of the phase explosion of metals in the explosive electron emission process Martyniuk, M.

M. Abstract. The phase transition of liquid metal to the vapor state is studied along with its influence on the transition of field emission to explosion emission in the course of the electric explosion of metal pins.