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347
Spherical aberration and the electromagnetic field in high aperture systems
 J. Opt. Soc. Am. A
, 1991
"... We present a model for investigating the effect of spherical aberration on the electromagnetic field and the Poynting vector in the focal region of a highaperture lens. The fields are obtained by integrating the vector equivalent of Kirchhoff's boundary integral over the aberrated wave front. ..."
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Cited by 4 (2 self)
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We present a model for investigating the effect of spherical aberration on the electromagnetic field and the Poynting vector in the focal region of a highaperture lens. The fields are obtained by integrating the vector equivalent of Kirchhoff's boundary integral over the aberrated wave front
Electromagnetic Field Shielding of a Spherical Shell – Revisited
, 2008
"... This note takes a fresh look at two classical EM shielding problems involving an integral imperfectly conducting spherical shell and a perfectly conducting hollow sphere with an aperture. Previous studies of the EM shielding provided by these objects have concentrated on evaluating the E and Hfiel ..."
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at the center of the shield, where only one term of the spherical wave function expansion is needed. While the internal Hfield in the shielded volume of the conducting shell is very close to being constant, the same is not true for the Efield, where there can be a significant variation in the Efield
ELECTROMAGNETIC FIELDS EXCITATION BY A MUL TIELEMENT VIBRATORSLOT STRUCTURES IN COU PLED ELECTRODYNAMICS VOLUMES
"... Abstract—A problem of electromagnetic fields excitation by a system of finitedimensional material bodies in two arbitrary electrodynamic volumes coupled by holes, cut in a common boundary of the volumes, is defined in a rigorous formulation. For the system containing two material bodies and one cou ..."
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Abstract—A problem of electromagnetic fields excitation by a system of finitedimensional material bodies in two arbitrary electrodynamic volumes coupled by holes, cut in a common boundary of the volumes, is defined in a rigorous formulation. For the system containing two material bodies and one
Casimir energy for spherical boundaries
, 2008
"... Calculations of the Casimir energy for spherical geometries which are based on integrations of the stress tensor are critically examined. It is shown that despite their apparent agreement with numerical results obtained from mode summation methods, they contain a number of serious errors. Specifical ..."
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. Specifically, these include (1) an improper application of the stress tensor to spherical boundaries, (2) the neglect of pole terms in contour integrations, and (3) the imposition of inappropriate boundary conditions upon the relevant propagators. A calculation which is based on the stress tensor and which
Electromagnetic field over the spherical Earth coated with Nlayered dielectric
"... [1] The electromagnetic field in the air generated by a dipole source over an electrically spherical Earth coated with nlayered dielectric is determined for continuouswave excitation. The region of interest consists of the spherical dielectric Earth, coated with the dielectric layer composing a su ..."
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[1] The electromagnetic field in the air generated by a dipole source over an electrically spherical Earth coated with nlayered dielectric is determined for continuouswave excitation. The region of interest consists of the spherical dielectric Earth, coated with the dielectric layer composing a
New AGILD EMS Electromagnetic Field Modeling
"... Abstract The Electromagnetic Stirring (EMS) technology has wide applications in the metal continuous casting. Stirring consists of exciting variable magnetic field in metal liquid, the magnetic field generates induction current. The induction current in the metal flow interacts with magnetic filed ..."
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Abstract The Electromagnetic Stirring (EMS) technology has wide applications in the metal continuous casting. Stirring consists of exciting variable magnetic field in metal liquid, the magnetic field generates induction current. The induction current in the metal flow interacts with magnetic filed
Spectral and variational principles of electromagnetic field excitation in wave guides
 Phys. Lett. A
, 2005
"... Abstract Possible variational principles for excitation of an electromagnetic field in a wave guide are discussed. Our emphasis is not on the calculation of the modal shapes, which is common in previous art, but rather on the calculation of modal amplitude evolution, which are important in electron ..."
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Cited by 1 (0 self)
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Abstract Possible variational principles for excitation of an electromagnetic field in a wave guide are discussed. Our emphasis is not on the calculation of the modal shapes, which is common in previous art, but rather on the calculation of modal amplitude evolution, which are important
Detunable transverse electromagnetic (TEM) Volume coil for highfield NMR
 Magn. Reson. Med
, 2002
"... Most highfield MRI systems do not have the actively detuned body coils that are integral to clinical systems operating at 1.5T and lower field strengths. Therefore, many clinical applications requiring homogeneous volume excitation in combination with local surface coil reception are not easily imp ..."
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Cited by 15 (0 self)
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Most highfield MRI systems do not have the actively detuned body coils that are integral to clinical systems operating at 1.5T and lower field strengths. Therefore, many clinical applications requiring homogeneous volume excitation in combination with local surface coil reception are not easily
Source Localisations of Artificial Dipoles in a Skull Shaped Volume with Uni and Bilateral MEG Recordings Using Spherical and Boundary Element Models
"... Introduction Localisations of intracranial electromagnetic sources with magnetoencephalography (MEG) are usually computed with mathematical models that approximate the skull volume by means of a homogenous sphere fitted to the surface of the skull where the sensors record strong magnetic field grad ..."
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Introduction Localisations of intracranial electromagnetic sources with magnetoencephalography (MEG) are usually computed with mathematical models that approximate the skull volume by means of a homogenous sphere fitted to the surface of the skull where the sensors record strong magnetic field
The boundary conditions for point transformed electromagnetic invisibility cloaks
 J. Phys. A
"... In this paper we study point transformed electromagnetic invisibility cloaks in transformation media that are obtained by transformation from general anisotropic media. We assume that there are several point transformed electromagnetic cloaks located in different points in space. Our results apply i ..."
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Cited by 12 (0 self)
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of the curl of the electric and the magnetic fields have to vanish at ∂K−. These results are proven requiring that energy be conserved. In the case of one spherical cloak with a spherically stratified K and a radial current at ∂K we verify by an explicit calculation that our cloaking boundary conditions
Results 1  10
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347