| Full text | |
| Author(s): |
Total Authors: 2
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| Affiliation: | [1] Univ Fed ABC, Ctr Ciencias Nat & Humanas, BR-09210170 Sao Paulo - Brazil
[2] Ohio State Univ, Ctr Cosmol & Astroparticle Phys, Columbus, OH 43210 - USA
Total Affiliations: 2
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| Document type: | Journal article |
| Source: | JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS; v. 24, n. 2-3, p. 151-160, 2010. |
| Web of Science Citations: | 13 |
| Abstract | |
The skin effect is rediscussed from the point of view of extended irreversible thermodynamics. Within that framework, the current density. owing in a good conductor is assumed to relax in a finite time tau. For the whole frequency range, it is found that the skin effect is characterized by two length scales: the penetration depth delta and an oscillation scale xi. Accordingly, it is also shown that the skin effect exhibits two sharply distinct regimes: damped oscillation and pure attenuation in space. A transition frequency between those regimes is determined by omega(t) = 1/tau root 3, thus leading to the possibility of measuring tau. In the high frequency regime, the penetration depth, as well as other related quantities, all acquire finite saturated values, which do not depend on the wave frequency and are determined by tau only. Experimental veri. cation of the results presented here may be relevant in several branches of applied physics and engineering. (AU) | |
| FAPESP's process: | 04/13668-0 - Cosmology in the era of precision: dark energy, dark matter and background cosmic radiation |
| Grantee: | Jose Ademir Sales de Lima |
| Support Opportunities: | Research Projects - Thematic Grants |