A THEORY OF THE MAGNETIC-FIELD FROM CURRENT MONOPOLES

被引：6

作者：

FERGUSON, AS ^{[1
]}

DURAND, D ^{[1
]}

机构：

[1] CASE WESTERN RESERVE UNIV,DEPT BIOMED ENGN,APPL NEURAL CONTROL LAB,CLEVELAND,OH 44106

来源：

JOURNAL OF APPLIED PHYSICS | 1992年 / 71卷 / 07期

关键词：

D O I：

10.1063/1.351005

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A method for calculating the magnetic fields of volume currents by using point current sources (monopoles) is derived. A model is developed for a point source that is consistent with Maxwell's equations. An arbitrary arrangement of point sources in a conducting volume is shown to generate no magnetic field outside the conductor if the volume surface coincides with an equipotential surface of the sources. This allows such sources to be added to any problem without affecting the magnetic field, and simplifies the calculation of the magnetic field generated by an arbitrary point source in both spherical and semi-infinite volume conductors. The magnetic field generated by current monopoles located within these volume conductors is then derived. The formulation greatly simplifies the analysis of the magnetic field generated by higher-order current sources, notably dipoles, in these volumes.

引用

页码：3107 / 3113

页数：7

共 14 条

[1]

BERRY PM, 1956, ANN NY ACAD SCI, V65, P1126

[2]

COLLIN RE, 1977, B MATH BIOL, V40, P201

[3] EFFECTS OF HEAD SHAPE ON EEGS AND MEGS [J].

CUFFIN, BN .

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 1990, 37 (01) :44-52

[4] MAGNETIC-FIELDS OF A DIPOLE IN SPECIAL VOLUME CONDUCTOR SHAPES [J].

CUFFIN, BN ;

COHEN, D .

IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING, 1977, 24 (04) :372-381

[5] MAGNETIC-FIELDS OF CURRENT MONOPOLES IN SPECIAL VOLUME CONDUCTORS [J].

FERGUSON, AS ;

DURAND, D .

IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (02) :758-767

[6] ELECTRIC POTENTIAL PRODUCED BY 2 POINT CURRENT SOURCES IN A HOMOGENEOUS CONDUCTING SPHERE [J].

FRANK, E .

JOURNAL OF APPLIED PHYSICS, 1952, 23 (11) :1225-1228

[7] ON MAGNETIC FIELD GENERATED OUTSIDE AN INHOMOGENEOUS VOLUME CONDUCTOR BY INTERNAL CURRENT SOURCES [J].

GESELOWT.DB .

IEEE TRANSACTIONS ON MAGNETICS, 1970, MAG6 (02) :346-&

[8] MODEL STUDIES OF MAGNETOCARDIOGRAM [J].

GRYNSZPA.F ;

GESELOWI.DB .

BIOPHYSICAL JOURNAL, 1973, 13 (09) :911-925

[9]

Romani G L, 1989, ADV BIOMAGNETISM, P33

[10] BASIC MATHEMATICAL AND ELECTROMAGNETIC CONCEPTS OF THE BIOMAGNETIC INVERSE PROBLEM [J].

SARVAS, J .

PHYSICS IN MEDICINE AND BIOLOGY, 1987, 32 (01) :11-22

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