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Scientists Get a Grip on Colliding Fermions to Enhance Atomic Clock Accuracy

April 16, 2009

Jun Ye in his lab Physicists have measured and controlled seemingly forbidden collisions between neutral strontium atoms--a class of antisocial atoms known as fermions, which are not supposed to collide when in identical energy states. The advance makes possible a significant boost in the accuracy of atomic clocks based on hundreds or thousands of neutral atoms. Full Story

National Institute of Standards and Technology

The National Science Foundation (NSF) is an independent federal agency that supports fundamental research and education across all fields of science and engineering. In fiscal year (FY) 2016, its budget is $7.5 billion. NSF funds reach all 50 states through grants to nearly 2,000 colleges, universities and other institutions. Each year, NSF receives more than 48,000 competitive proposals for funding and makes about 12,000 new funding awards. NSF also awards about $626 million in professional and service contracts yearly.

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