期刊
PHYSICAL REVIEW LETTERS
卷 92, 期 15, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.92.153004
关键词
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We have measured the lifetime of the 5s5p P-3(2) metastable state of strontium atoms by magneto-optically trapping the decayed atoms to the ground state, which allowed sensitive detection of the rare decay events. We found that the blackbody radiation-induced decay was the dominant decay channel for the state at T=300 K. The lifetime was determined to be 520(-140)(+310) s in the limit of zero temperature, arguably the longest lifetime ever determined in a laboratory environment.
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