Previously we have shown that apart from discrete spectrum (eigenvalues), the threedimensional volume integral operator of electromagnetic scattering has a conitnuous essential spectrum as well. Here we derive the corresponding essential modes. We use the Weyl definition of essential spectrum, where such modes are described in terms of singular sequences. A closed form expression for the required sequence is obtained and its properties are analyzed. We also discuss the physical meaning and the conditions on the excitation of the essential resonances.
|Title of host publication||2007 International conference on electromagnetics in advanced applications|
|Place of Publication||Torino|
|Number of pages||4|
|Publication status||Published - 2007|
|Event||ICEAA 2007: 10th edition - Torino|
Duration: 17 Sep 2007 → 21 Sep 2007
|Period||17/09/07 → 21/09/07|
- conference contrib. refereed
- Conf.proc. > 3 pag
Budko, NV., & Samokhin, AB. (2007). The essential modes of the electromagnetic scattering operator. In s.n. (Ed.), 2007 International conference on electromagnetics in advanced applications (pp. 1-4). COREP.