We report on the study of shadowing of electromagnetic fields radiated in the Terahertz (THz) region from two consecutive sources of coherent diffraction and transition radiation. In these conditions, the formation length is predicted to be ≲100 m, and shadowing effects should result in an almost complete suppression of radiated fields within distances of the order of tens of centimeters. We experimentally measured that shadowing effects disappear for distances significantly shorter than those predicted. We propose a new model that explains our experimental observations by taking into account 3D diffraction effects. These findings will have a positive impact on the beneficial use of consecutive radiators both for the generation of intense electromagnetic radiation and for beam diagnostics using coherent polarization radiation from ultra-relativistic charged particles.

Diffractive shadowing of coherent polarization radiation / Curcio, A.; Bergamaschi, M.; Corsini, R.; Gamba, D.; Farabolini, W.; Kieffer, R.; Lefevre, T.; Mazzoni, S.; Dolci, V.; Petrarca, M.; Karataev, P.; Lekomtsev, K.; Lupi, S.; Potylitsyn, A.. - In: PHYSICS LETTERS A. - ISSN 0375-9601. - 391:(2021), p. 127135. [10.1016/j.physleta.2020.127135]

Diffractive shadowing of coherent polarization radiation

Bergamaschi M.;Gamba D.;Dolci V.;Petrarca M.;
2021

Abstract

We report on the study of shadowing of electromagnetic fields radiated in the Terahertz (THz) region from two consecutive sources of coherent diffraction and transition radiation. In these conditions, the formation length is predicted to be ≲100 m, and shadowing effects should result in an almost complete suppression of radiated fields within distances of the order of tens of centimeters. We experimentally measured that shadowing effects disappear for distances significantly shorter than those predicted. We propose a new model that explains our experimental observations by taking into account 3D diffraction effects. These findings will have a positive impact on the beneficial use of consecutive radiators both for the generation of intense electromagnetic radiation and for beam diagnostics using coherent polarization radiation from ultra-relativistic charged particles.
Beam diagnostics; Destructive interference; Electrodynamics; Electromagnetic shadowing; Polarization radiation; Relativistic particle beams
01 Pubblicazione su rivista::01a Articolo in rivista
Diffractive shadowing of coherent polarization radiation / Curcio, A.; Bergamaschi, M.; Corsini, R.; Gamba, D.; Farabolini, W.; Kieffer, R.; Lefevre, T.; Mazzoni, S.; Dolci, V.; Petrarca, M.; Karataev, P.; Lekomtsev, K.; Lupi, S.; Potylitsyn, A.. - In: PHYSICS LETTERS A. - ISSN 0375-9601. - 391:(2021), p. 127135. [10.1016/j.physleta.2020.127135]
File allegati a questo prodotto
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1504580
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 2
  • ???jsp.display-item.citation.isi??? 2
social impact