Results 261 to 270 of about 514,697 (295)

Magnetic field contribution to the Lorentz model

Journal of the Optical Society of America A, 2006
The classical Lorentz model of dielectric dispersion is based on the microscopic Lorentz force relation and Newton's second law of motion for an ensemble of harmonically bound electrons. The magnetic field contribution in the Lorentz force relation is neglected because it is typically small in comparison with the electric field contribution.
Kurt E, Oughstun, Richard A, Albanese
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Magnetization of Ising Model in Nonzero Magnetic Field

Journal of Mathematical Physics, 1969
Knowing only the zero-field magnetization (e.g., Yang's result) of the Ising model in any number of dimensions, one can construct a lower bound on m(h), the magnetization in finite field. Knowledge of u, the internal energy per bond, enables a more efficient lower bound to be constructed.
Daniel C. Mattis, Michael Plischke
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A hybrid magnetic field model for axisymmetric magnets

2013 IEEE/ASME International Conference on Advanced Intelligent Mechatronics, 2013
A hybrid model, synergistically fusing the accuracy of artificial neutral networks (ANNs) and the efficiency of the single magnetic dipole (MD) model, is presented to characterize the magnetic field of axisymmetric cylindrical permanent magnets. While the MD model is widely used due to its simplicity, its efficacy reduces dramatically near the source ...
null Faye Wu, Dan D. Frey, null Shaohui Foong   +2 more
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Magnetic field modeling of a dual-magnet configuration

Journal of Applied Physics, 2007
This paper presents the theoretical and experimental studies of a dual-magnet (DM) configuration that forms the electromagnetic circuit of a nanopositioning actuator. Motivation of this work arises when an accurate prediction of the magnetic field behavior within the DM configuration is required to achieve ultrahigh precision motion control.
Tat Joo Teo, I-Ming Chen, Guilin Yang, Wei Lin   +3 more
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Rov Magnetized Magnetic Field Measurement and Magnetic Dipole Model

2011
Through to the position of the main interference source Rov, I put forward the twelve magnetic dipole model, and then deduced and the model of magnetizing field size of the twelve magnetic dipole near field; and use mathematica to simulate. And in the wild, we established a 3 d coordinate system, and selected certain areas to measure different ...
Weiming Cheng, Chong Kang, Hui Li, Jinku Lv   +3 more
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Magnetic fields with photon beams: Monte Carlo calculations for a model magnetic field

Medical Physics, 2000
Strong transverse magnetic fields can produce very large dose enhancements and reductions in localized regions of a patient under irradiation by a photon beam. We have suggested a model magnetic field which can be expected to produce such large dose enhancements and reductions, and we have carried out EGS4 Monte Carlo calculations to examine this ...
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Magnetic Field Calculations for the HDM Model Magnets

1994
Westinghouse Electric Corporation (WEC) is presently under contract to the SSCL to design and build the dipole magnets for the High Energy Booster (HEB).1 As a starting point in the magnet design process, a baseline design was provided by SSCL, identified as DSB-701, to be used for the analysis and construction of three 1.7 m model magnets.
M. P. Krefta, H. L. Chuboy, J. H. Parker
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Modeling peripheral nerve stimulation using magnetic fields.

Journal of the peripheral nervous system : JPNS, 1997
The technique of magnetic stimulation (MS) has the potential to contribute to the study of the peripheral nervous system, but the uncertainty of the site of activation and problems in achieving supramaximal responses have prevented its extensive use. This paper discusses mathematical modeling of MS of the peripheral nerves.
Ruohonen J, Ravazzani P, Tognola G, Grandori F   +3 more
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Ising model in an oscillating magnetic field: Mean-field theory

Physical Review E, 1993
I consider the dynamics of a soft-spin Ising magnet, subject to the time-varying external magnetic field h(t)=h cos\ensuremath{\Omega}t. The system is modeled with a time-dependent Ginzburg-Landau equation and is studied at a mean-field level. The time-averaged magnetization (scrM) acts as the order parameter and divides the temperature-h plane into ...
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Magnetic resonance linear accelerator technology and adaptive radiation therapy: An overview for clinicians

Ca-A Cancer Journal for Clinicians, 2022
William A Hal, X Allen Li, Daniel A Low
exaly