Laser cooling of a small number of Be+io
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H. Imajo; S. Urabe; K. Hayasaka; M. Watanabe; R. Hayashi
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Article
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1993
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Springer
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English
โ 523 KB
Be + ions stored in a Penning trap were cooled by a laser beam perpendicular to the magnetic field. The cooled ions are strongly coupled and phase transitions of up to 100 ions were observed. In experiments with only a few ions stored in the trap, a stepwise decrease in fluorescence intensity was ob