uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Mechanism of angular momentum transfer from microwaves to a copper ring
Univ Rennes 1, F-35042 Rennes, France..
Univ Rennes 1, F-35042 Rennes, France.;Univ Rennes 1, CNRS, UMR 6164, IETR, F-35042 Rennes, France..
Univ Rennes 1, CNRS, UMR 6164, IETR, F-35042 Rennes, France..
Univ Rennes 1, CNRS, UMR 6251, IPR, F-35042 Rennes, France..
Show others and affiliations
2016 (English)In: European Physical Journal D: Atomic, Molecular and Optical Physics, ISSN 1434-6060, E-ISSN 1434-6079, Vol. 70, no 8, 172Article in journal (Refereed) Published
Abstract [en]

In the exchange of orbital angular momentum between an electromagnetic wave and a copper ring we examine the origin of the Angular Momentum. We then investigate the transfer mechanism between the microwave and the object, and compare it with other mechanisms. We evidence a transfer mechanism based on the reflection of the electromagnetic field on the copper ring. In particular, at a microscopic scale, we show that the electromagnetic field induces alternative electric currents in the ring, with a small drift. Although little, the resistivity of copper leads to a force that rotates the ring. The estimation of the torque, which is of the order of 10(-8) Nm, is in good agreement with the experimental measurements. We also show that the transfer of electromagnetic orbital angular momentum to objects could be a way to measure the orbital angular momentum carried by electromagnetic fields, and we discuss possible applications.

Place, publisher, year, edition, pages
2016. Vol. 70, no 8, 172
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:uu:diva-307876DOI: 10.1140/epjd/e2016-70193-6ISI: 000382741600011OAI: oai:DiVA.org:uu-307876DiVA: diva2:1048843
Available from: 2016-11-22 Created: 2016-11-22 Last updated: 2016-11-22Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Thidé, Bo
By organisation
Swedish Institute of Space Physics, Uppsala Division
In the same journal
European Physical Journal D: Atomic, Molecular and Optical Physics
Fusion, Plasma and Space Physics

Search outside of DiVA

GoogleGoogle Scholar

Altmetric score

Total: 48 hits
ReferencesLink to record
Permanent link

Direct link