indietro pagina precedente Dip.Fisica - Univ.Siena 
Attività di Ricerca
  MOT - Magneto Optical Trap

MOT is acronym for Magneto Optical Trap. A MOT consists of a cell containing an atomic vapor in high vacuum. The vapor is illuminated by 3 perpendicular pairs of red-detuned, circularly polarised laser beams. The atoms are cooled  by the beams and pushed in their crossing region (around the center of the cell). In fact, quadrupole magnetic field produced by anti-Helmoltz coils produces a Zero-Field in the center with a constant field gradient. The field gradient makes that central position a stable equilibrium region for atom motion. Temperatures as low as microKelvin have been achieves in many laboratories using MOT's.

indietro pagina precedente Web designer: Ale Marchini