Results 231 to 240 of about 10,107,894 (288)

Axial Magnetic Fields in Relativistic Self-Focusing Channels

Physical Review Letters, 2002
Based on an improved cavitation model for the electron dynamics, an exact analysis is presented of the generation of axial magnetic fields in the relativistic self-focusing channels produced by circularly polarized light in plasmas. Two kinds of waveguiding structures are considered: single-channel waveguides and plasma filaments surrounded by a light ...
A, Kim, M, Tushentsov, D, Anderson, M, Lisak   +3 more
openaire   +2 more sources

Effects of Axial Magnetic Field on the Current Distribution in Z-Pinch Implosion with Pre-Embedded Axial Magnetic Field

2018 IEEE International Conference on Plasma Science (ICOPS), 2018
We investigate fundamental physics involved in plasma implosion with pre-embedded magnetic field. Reported are the first time spectroscopic measurements of the evolution of the azimuthal magnetic field distribution; the configuration used is magnetized z-pinch plasma.
D. Mikitchuk, M. Cvejic, R. Doron, E. Kroupp, C. Stollberg, Y. Maron, A. L. Velikovich, J. L. Giuliani, E.P. Yu, A. Fruchtman   +9 more
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The magnetic potential of axially symmetric fields

Nuclear Instruments and Methods, 1965
Abstract A general expression for the magnetic potential of axially symmetric fields is carried out: the results are rigorously correct, if no currents are present. The problem is solved by a harmonical function, whose axial derivative fits the given field form in the median plane: this coincidence is imposed up to second order terms.
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Coulomb Clusters in Axial Magnetic Field

AIP Conference Proceedings, 2003
The rotation of Coulomb clusters with different numbers of micron‐sized particles is observed in an inductively coupled dusty plasma in the presence of an axial magnetic field. The rotation is found to be dependent on the particle number and configuration.
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On the Theory of Axially Symmetric Electron Beams in an Axial Magnetic Field

Proceedings of the IRE, 1949
One of the more perplexing problems in the design of klystrons and traveling-wave tubes has been the formation of well collimated electron beams. An axially symmetric form of an electron beam is proposed in which the space-charge repulsive forces are just balanced by magnetic focusing forces so that the beam may be made as long as desirable without any
openaire   +1 more source

The effect of the axial magnetic field structure on the threshold welding current for closed axial magnetic field vacuum interrupter contacts

2017 IEEE Holm Conference on Electrical Contacts, 2017
There are two designs of large area, vacuum interrupter contacts: the transverse magnetic field (TMF) contact and the axial magnetic field (AMF) contact. These contacts are required to perform a wide variety of roles within vacuum circuit breakers. One duty is to pass short-circuit currents with the vacuum interrupters' contacts closed for a period of ...
Paul G. Slade, Erik D. Taylor, Andreas Lawall   +2 more
openaire   +1 more source

Computing the field in permanent-magnet axial-field motors

IEEE Transactions on Magnetics, 1994
A closed-form expression is presented for computing the axial field in the coil region of permanent-magnet axial-field motors. This expression, which is based on a two-dimensional approximation of the motor geometry, takes into account the finite slope of the demagnetization curve of the permanent-magnet. It can be used to perform parametric studies of
openaire   +1 more source

The magnetized Noh problem with both axial and azimuthal magnetic fields

2014 IEEE 41st International Conference on Plasma Sciences (ICOPS) held with 2014 IEEE International Conference on High-Power Particle Beams (BEAMS), 2014
The classic Noh problem [1] describes in simple analytic formulae the divergent hydrodynamic shock resulting from the stagnation of a supersonic flow against a wall, axis, or point. It has been used for years as a verification test for simulation codes.
J.L. Giuliani, A.L. Velikovich, Y.K. Chong, J.W. Thornhill, S.T. Zalesak, P. Tzeferacos, D. Lamb   +6 more
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THE TOWNSEND DISCHARGE IN A COAXIAL DIODE WITH AXIAL MAGNETIC FIELD

Canadian Journal of Physics, 1958
An approximate theory is developed of the breakdown characteristics of a coaxial diode in an axial magnetic field, taking into account the effects of elastic collisions. It is assumed that the electron moves in a constant electric field between collisions and thus the theory is valid only in the appropriate range of magnetic field and voltage ...
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The behavior of TIG welding arc in a high-frequency axial magnetic field

Welding in the World, 2020
H. Wu, Y. L. Chang, A. Babkin, B. Lee
semanticscholar   +1 more source