Electromagnetic response of a conducting cylinder of finite length

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Published: Oct 1, 1972
DOI: https://doi.org/10.22201/igeof.00167169p.1972.12.4.1006
Keywords:
Electromagnetism, Truncated cylinder, Line source

Main Article Content

David A. Hill
Institute for Telecommunication Sciences, Office of Telecommunications.
James R. Wait
Cooperative Institute for Research in Environmental Sciences University of Colorado, National Oceanic and Atmospheric Administration U.S. Department of Commerce, Boulder, Colorado.

Abstract

The electromagnetic fields are calculated for a truncated cylinder excited by a loop source and, for comparision, for excitation by a line source. These results are also compared with the infinite cylinder case. It is found that the relative importance of the azimuthally symmetric component of the current is diminished when the cylinder is truncated. This paper is prompted by the cogent suggestions of S. K. Singh concerning the possible importance of the symmetrical current induced in elongated ore bodies by certain electromagnetic source configurations used in geophysical exploration.

Article Details

How to Cite
Hill, D. A., & Wait, J. R. (1972). Electromagnetic response of a conducting cylinder of finite length. Geofisica Internacional, 12(4), 245–266. https://doi.org/10.22201/igeof.00167169p.1972.12.4.1006
Issue
Vol. 12 No. 4 (1972): October 1, 1972
Section
Article
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References

SINGH, S. K., 1973. On axially symmetric electric current induced in a cylinder under a line source, Geophysics, 38 : 971-974. DOI: https://doi.org/10.1190/1.1440387

WAIT, J. R., 1952. A cylindrical ore body in the presence of a cable carrying an oscillating current, Geophysics, 17(2) : 378-386. DOI: https://doi.org/10.1190/1.1437765

WAIT, J. R., 1959. Electromagnetic Radiation from Cylindrical Structures, Pergamon Press, Oxford, England.

WAIT, J. R. and D. A. HILL, 1973. Excitation of a homogeneous conductive cylinder of finite length by a prescribed axial current distribution, Radio Science, 7 October 1973 (in press). DOI: https://doi.org/10.1029/RS008i012p01169

WHEELON, A. D., 1968. Tables of Summable Series and Integrals Involving Bessel Functions, Holden-Day, San Francisco, p. 9.

ADDITIONAL BIBLIOGRAPHY

NEGI, J. G., C. P. GUPTA, and U. RAVAL, 1972. Induction anomaly due to an elongated covered ore-zone excited by a long current carrying cable, Geophys., Prosp., 20 : 193-211. DOI: https://doi.org/10.1111/j.1365-2478.1972.tb00629.x

NEGI, J. G. and U. RAVAL, 1969. Negative electromagnetic screening by a cylindrical conducting cover, Geophys., 36(6) : 944-957. DOI: https://doi.org/10.1190/1.1440064

SINGH, S. K., 1972. Transient electromagnetic response of a conducting infinite cylinder embedded in a conducting medium, Geofísica Internacional 12(1) : 7-21. DOI: https://doi.org/10.22201/igeof.00167169p.1972.12.1.989

WAIT, J. R., 1973. On electromagnetic induction in elongated ore bodies, Geophys. (Letter to the Editor) 38 : 984-985. DOI: https://doi.org/10.1190/1.38050002.1

WAIT, J. R. and R. E. WILKERSON, 1972. The sub-surface fields produced by a line-current source on a non-flat earth (cylindrical model), Pure and Appl. Geophys. 95(III) : 150-156. DOI: https://doi.org/10.1007/BF00878863

WARD, S. H. and H.F. MORRISON (Eds.) 1972. Special issue on Electromagnetic Scattering, Geophys., 36(1) : 1-183.