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Retrieving the complex degree of spatial coherence of electron beams |
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| Authors: | J Carrasquilla-Alvarez R Castaneda J Garcia-Sucerquia MA Schofield M Beleggia Y Zhu G Matteucci |
| Institution: | aPhysics School, Universidad Nacional de Colombia Sede Medellín A.A. 3840, Medellín, Colombia;bDepartment of Physics, Dalhousie University, Halifax, NS, Canada B3H 3J5;cCenter for Functional Nanomaterials Brookhaven National Laboratory, Upton, NY 11973, USA;dDepartment of Physics, University of Bologna V/le B. Pichat 6/2, I-40127 Bologna, Italy |
| Abstract: | The possibility to characterize the coherence properties of an electron source is presented. The method, based on the determination of centered-reduced moments of the beam spot, allows the evaluation of both amplitude and phase of the complex degree of spatial coherence. The experimental results are in agreement with a different approach based on the Fourier analysis and with calculations according to the Van Cittert—Zernike theorem. |
| Keywords: | 07 60 Ly 07 78 +s 41 75 Fr 42 25 Kb |
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