Scientific Results

High-flux monochromatic ion and electron beams based on laser-cooled atoms

Year: 2013

Authors: Kime L., Fioretti A., Bruneau Y., Porfido N., Fuso F., Viteau M., Khalili G., Šantić N., Gloter A., Rasser B., Sudraud P., Pillet P., Comparat D.

Autors Affiliation: Laboratoire Aimé Cotton, CNRS, Université Paris-Sud, ENS Cachan, Bât. 505, 91405 Orsay, France; Orsay Physics, 95 Avenue des Monts Auréliens, ZA Saint-Charles, 13710 Fuveau, France; Laboratoire de Physique des Solides, UMR 8502, Université Paris-Sud, Bât. 510, 91405 Orsay, France; Dipartimento di Fisica, Universitá di Pisa and CNISM, Largo Pontecorvo 3, 56127 Pisa, Italy; Istituto Nazionale di Ottica, INO-CNR, U.O.S. Pisa “Adriano Gozzini,” via Moruzzi 1, 56124 Pisa, Italy

Abstract: We propose a source for high-brightness ion and electron beams based on the ionization of an effusive atomic beam which is transversely laser cooled and compressed. The very low transverse temperature (mK range) and the relative low density of the starting atomic sample ensure excellent initial conditions for obtaining bright and monochromatic charge sources. In contrast to the standard photoionization techniques used by similar sources, we utilize field ionization of Rydberg atoms. This approach allows a substantial reduction of the required laser power and copes differently with the problems of the energy spread created during the ionization process and of the stochastic space-charge effect. Theoretical modeling and prospective ideas of this emerging technology are given.


Volume: 88 (3)      Pages from: 033424  to: 033424

More Information: We thank C. Colliex, M. Allegrini, A. Lafosse, and F. Robicheaux for helpful discussions. We are grateful to Bas Van der Geer for help with the use of the GPT software. The research leading to these results has received funding from Institut Francilien de Recherche sur les Atomes Froids (IFRAF), federation de recherche Lumiere Matiere (LUMAT), the European Union Seventh Framework Program FP7/2007-2013 under Grant Agreement No. 251391 COLDBEAMS and from the European Research Council under Grant Agreement No. 277762COLDNANO. A. F. has been supported by the Triangle de la Physique under Contracts No. 2007-n. 74T and No. 2009035T GULFSTREAM. N.S. has been supported by Campus France with a \”Bourse de stage d\’approfondissement.\”
KeyWords: atomic physics; ion beams; ultracold gases; rydberg atoms; cold atoms
DOI: 10.1103/PhysRevA.88.033424

Citations: 33
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