Low-Current, Vertical Blowup in a Stored Laser-Cooled Ion Beam | Zendy

N. Madsen | Zendy; P. D. Bowe | Zendy; J. S. Nielsen | Zendy; Lars E. Siegfried | Zendy; J. S. Hangst | Zendy

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Low-Current, Vertical Blowup in a Stored Laser-Cooled Ion Beam

Author(s) -

N. Madsen,

P. D. Bowe,

J. S. Nielsen,

Lars E. Siegfried,

J. S. Hangst

Publication year - 2001

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.87.274801

Subject(s) - laser beam quality , beam (structure) , transverse plane , laser , ion beam , focused ion beam , materials science , beam parameter product , ion , optics , beam diameter , scattering , laser cooling , laser beams , atomic physics , physics , structural engineering , quantum mechanics , engineering

Using a novel technique for real-time transverse beam profile diagnostics of a stored ion beam, we have observed the transverse size of a stored laser-cooled ion beam. Earlier we observed that the density of the beam is independent of the beam current. At very low currents, we observe an abrupt change in this behavior: The vertical beam size increases suddenly by about an order of magnitude. This observation implies a sudden change in the indirect vertical cooling mediated by intrabeam scattering. Our results have serious implications for the ultimate beam quality attainable by laser cooling. (11 refs)

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