A study on theory and physical mechanism of an infinitesimal current-carrying point charge

DOI

10.2991/iceeg-16.2016.7How to use a DOI?

Keywords

electric dipole, radiation field, point charge, near-source field

Abstract

In antenna theory, the dipole hypothesis is applicable and widely used for observing the far-field radiation. However, when applied to near-field quasi-static radiation observation in geophysical surveying, the transceiver distance is often small, and thereby the source should not be treated as a dipole to avoid misfit between the observation and the modeling based on the dipole theory. To overcome such limitation, this paper first presents a new method of estimating the field generated from a dipole by dividing it into a series of infinitesimal point charge and computing both the velocity field excited by uniform-motion charge and accelerated-velocity field from accelerated charge, so that not only the far-field radiation but also the near-field quasi-static radiation can be accurately estimated. The results are well verified by the traditional methods of radiation modeling from a dipole. Then this study investigates the associated physical mechanism by developing a new equation for computing the radiated field in time-domain based on the frequency-to-time transformation, from which the relationship between a motive charge and its corresponding field is investigated. It is concluded that the field generated from dipole is in nature the same as that generated from motive charge.

Copyright

© 2016, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Nannan Zhou
AU  - Guoqiang Xue
AU  - Kang Chen
PY  - 2016/06
DA  - 2016/06
TI  - A study on theory and physical mechanism of an infinitesimal current-carrying point charge
BT  - Proceedings of the 7th International Conference on Environment and Engineering Geophysics & Summit Forum of Chinese Academy of Engineering on Engineering Science and Technology
PB  - Atlantis Press
SP  - 22
EP  - 25
SN  - 2352-5401
UR  - https://doi.org/10.2991/iceeg-16.2016.7
DO  - 10.2991/iceeg-16.2016.7
ID  - Zhou2016/06
ER  -