Observation of single collisionally cooled trapped ions in a buffer gas

Individual Ba ions are trapped in a gas-filled linear ion trap and observed with a high signal-to-noise ratio by resonance fluorescence. Single-ion storage times of {approx}5 min ({approx}1 min) are achieved using He (Ar) as a buffer gas at pressures in the range 8x10{sup -5}-4x10{sup -3} torr. Trap...

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Veröffentlicht in:	Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2007-08, Vol.76 (2), Article 023404
Hauptverfasser:	Green, M., Wodin, J., DeVoe, R., Fierlinger, P., Flatt, B., Gratta, G., LePort, F., Montero Díez, M., Neilson, R., O’Sullivan, K., Pocar, A., Waldman, S., Leonard, D. S., Piepke, A., Hargrove, C., Sinclair, D., Strickland, V., Fairbank, W., Hall, K., Mong, B., Moe, M., Farine, J., Hallman, D., Virtue, C., Baussan, E., Martin, Y., Schenker, D., Vuilleumier, J.-L., Vuilleumier, J.-M., Weber, P., Breidenbach, M., Conley, R., Hall, C., Hodgson, J., Mackay, D., Odian, A., Prescott, C. Y., Rowson, P. C., Skarpaas, K., Wamba, K.
Format:	Artikel
Sprache:	eng
Schlagworte:	ARGON ATOMIC AND MOLECULAR PHYSICS BARIUM BARIUM IONS BUFFERS COOLING GASES HELIUM ION-ATOM COLLISIONS PARTICLES RESONANCE FLUORESCENCE SIGNAL-TO-NOISE RATIO STORAGE TRAPPING TRAPS XENON
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Beschreibung
Zusammenfassung:	Individual Ba ions are trapped in a gas-filled linear ion trap and observed with a high signal-to-noise ratio by resonance fluorescence. Single-ion storage times of {approx}5 min ({approx}1 min) are achieved using He (Ar) as a buffer gas at pressures in the range 8x10{sup -5}-4x10{sup -3} torr. Trap dynamics in buffer gases are experimentally studied in the simple case of single ions. In particular, the cooling effects of light gases such as He and Ar and the destabilizing properties of heavier gases such as Xe are studied. A simple model is offered to explain the observed phenomenology.
ISSN:	1050-2947 1094-1622
DOI:	10.1103/PhysRevA.76.023404