Ultracold molecules created

Wednesday, June 10, 2015 - 14:30 in Physics & Chemistry

Experimental physicists have successfully cooled molecules in a gas of sodium potassium to a temperature of 500 nanokelvins -- just a hair above absolute zero, and over a million times colder than interstellar space. The researchers found that the ultracold molecules were relatively long-lived and stable, resisting reactive collisions with other molecules. The molecules also exhibited very strong dipole moments -- strong imbalances in electric charge within molecules that mediate magnet-like forces between molecules over large distances.

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