Rapid calculation of static magnetic field perturbation generated by magnetized objects in arbitrary orientations

2021 ◽  
Author(s):  
Seok‐Jin Yeo ◽  
So‐Hee Lee ◽  
Seung‐Kyun Lee
Keyword(s):  
Magnetic Field ◽  
Static Magnetic Field ◽  
Field Perturbation ◽  
Rapid Calculation ◽  
Magnetic Field Perturbation

Peierls’ substitution via minimal coupling and magnetic pseudo-differential calculus

2019 ◽  
Vol 31 (03) ◽  
pp. 1950008
Author(s):  
Horia D. Cornean ◽  
Viorel Iftimie ◽  
Radu Purice
Keyword(s):  
Magnetic Field ◽  
Differential Calculus ◽  
Spectral Band ◽  
Spatial Decay ◽  
Minimal Coupling ◽  
Field Perturbation ◽  
Wannier Functions ◽  
Weak Magnetic Fields ◽  
The Magnetic Field ◽  
Magnetic Field Perturbation

We revisit the celebrated Peierls–Onsager substitution for weak magnetic fields with no spatial decay conditions. We assume that the non-magnetic [Formula: see text]-periodic Hamiltonian has an isolated spectral band whose Riesz projection has a range which admits a basis generated by [Formula: see text] exponentially localized composite Wannier functions. Then we show that the effective magnetic band Hamiltonian is unitarily equivalent to a Hofstadter-like magnetic matrix living in [Formula: see text]. In addition, if the magnetic field perturbation is slowly variable in space, then the perturbed spectral island is close (in the Hausdorff distance) to the spectrum of a Weyl quantized minimally coupled symbol. This symbol only depends on [Formula: see text] and is [Formula: see text]-periodic; if [Formula: see text], the symbol equals the Bloch eigenvalue itself. In particular, this rigorously formulates a result from 1951 by J. M. Luttinger.

Eddy current density by inversion of one measured component of the resulting magnetic field perturbation

2016 ◽  
Vol 52 (1-2) ◽  
pp. 35-40
Author(s):  
Dário Pasadas ◽  
A. Lopes Ribeiro ◽  
Helena Ramos ◽  
Tiago Rocha
Keyword(s):  
Magnetic Field ◽  
Current Density ◽  
Eddy Current ◽  
Field Perturbation ◽  
Eddy Current Density ◽  
Magnetic Field Perturbation

scholarly journals Relativistic electron's butterfly pitch angle distribution modulated by localized background magnetic field perturbation driven by hot ring current ions

2017 ◽  
Vol 44 (10) ◽  
pp. 4393-4400 ◽  
Author(s):  
Ying Xiong ◽  
Lunjin Chen ◽  
Lun Xie ◽  
Suiyan Fu ◽  
Zhiyang Xia ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Pitch Angle ◽  
Ring Current ◽  
Angle Distribution ◽  
Pitch Angle Distribution ◽  
Field Perturbation ◽  
Background Magnetic Field ◽  
Magnetic Field Perturbation

A new NDT method based on permanent magnetic field perturbation

2011 ◽  
Vol 44 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Yanhua Sun ◽  
Yihua Kang ◽  
Chen Qiu
Keyword(s):  
Magnetic Field ◽  
Permanent Magnetic Field ◽  
Field Perturbation ◽  
Magnetic Field Perturbation

Influence of AC external magnetic field perturbation on the guidance force of HTS bulk over a NdFeB guideway

2007 ◽  
Vol 459 (1-2) ◽  
pp. 43-46 ◽  
Author(s):  
Longcai Zhang ◽  
Jiasu Wang ◽  
Suyu Wang ◽  
Qingyong He
Keyword(s):  
Magnetic Field ◽  
External Magnetic Field ◽  
Guidance Force ◽  
Field Perturbation ◽  
Hts Bulk ◽  
Ndfeb Guideway ◽  
Magnetic Field Perturbation

scholarly journals Suppression of type-I ELMs using a single toroidal row of magnetic field perturbation coils in DIII-D

2008 ◽  
Vol 48 (12) ◽  
pp. 122001 ◽  
Author(s):  
M.E. Fenstermacher ◽  
T.E. Evans ◽  
T.H. Osborne ◽  
M.J. Schaffer ◽  
J.S. deGrassie ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Type I ◽  
Field Perturbation ◽  
Magnetic Field Perturbation

scholarly journals Subsolar magnetopause observation and kinetic simulation of a tripolar guide magnetic field perturbation consistent with a magnetic island

2016 ◽  
Vol 43 (7) ◽  
pp. 3035-3041 ◽  
Author(s):  
S. Eriksson ◽  
P. A. Cassak ◽  
A. Retinò ◽  
F. S. Mozer
Keyword(s):  
Magnetic Field ◽  
Kinetic Simulation ◽  
Magnetic Island ◽  
Field Perturbation ◽  
Guide Magnetic Field ◽  
Magnetic Field Perturbation
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