Spectral Distribution of Infrared Synchrotron Radiation by an Insertion Device and Its Edges: A Comparison Between Experimental and Simulated Spectra

P. Roy; M. Guidi Cestelli; A. Nucara; O. Marcouille; P. Calvani; P. Giura; A. Paolone; Y.-L. Mathis; A. Gerschel

doi:10.1103/PhysRevLett.84.483

Spectral Distribution of Infrared Synchrotron Radiation by an Insertion Device and Its Edges: A Comparison Between Experimental and Simulated Spectra

P. Roy, M. Guidi Cestelli, A. Nucara, O. Marcouille, P. Calvani, P. Giura, A. Paolone, Y.-L. Mathis, and A. Gerschel

Phys. Rev. Lett. 84, 483 – Published 17 January 2000

Abstract

The first measurements of the spectral distribution of infrared radiation emitted by an undulator are reported. They are compared with calculations including both velocity and acceleration terms. Measurements have been performed at the beam line SIRLOIN (Spectroscopie en InfraRouge Lointain). The agreement between the observations and this first exact numerical solution shows that the inclusion of the velocity term in the submillimeter frequency range is necessary. Moreover, structures due to undulator edges are observed in the far infrared and mid-infrared range, while the interference pattern due to redshifted harmonics of the undulator is dominating in the mid-infrared to near infrared.

Received 4 June 1999

DOI:https://doi.org/10.1103/PhysRevLett.84.483

Authors & Affiliations

P. Roy^1,*, M. Guidi Cestelli³, A. Nucara³, O. Marcouille¹, P. Calvani³, P. Giura¹, A. Paolone¹, Y.-L. Mathis⁴, and A. Gerschel¹

¹LURE, Bâtiment 209-D, BP 48, 91998 Orsay Cedex, France
²and CPMA, Bâtiment 490, Orsay Cedex, France
³Istituto Nazionale di Fisica della Materia, Dipartimento di Fisica Università di Roma “La Sapienza”, P. le A. Moro, 2100185 Roma, Italy
⁴Forschungszentrum Karlsruhe Postfach 3640, D-76021 Karlsruhe, Germany