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Joint IQSE/OSA Seminar


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Xia Hua
Texas A&M University

ABSTRACT 

MAIN TALK
SPEAKER: Xia Hua
TITLE:Searching for the Th-229 isomeric state - a review with recent progress
ABSTRACT:
The development of time keeper devices has a long history. From the invention of traditional pendulum clocks to modern atomic clocks, the accuracy and stability of the clocks have both improved a lot. Nowadays, the most accurate atomic clock (the Strontium lattice clock in NIST) has uncertainty of 2*10-18. The nuclear clock is one of the promising next generation clocks, with its accuracy predicted to be 10-19. Thorium-229 is the only candidate, which has a nuclear transition of 7.6+-0.5eV, can be used to build the next generation nuclear clock. However, the exact energy level and lifetime of this nuclear excited state has never been precisely determined. Several groups in the world are currently working on the measurement of this nuclear transition. In this talk, I will introduce the status and recent development of the Th-229 isomeric state measurement.



Friday, May 24, 2019
IQSE 578, 12:00 Noon
Mitchell Physics Building


Department of Physics and Astronomy
Institute for Quantum Science and Engineering
Texas A&M University

(Pizza lunch as usual. Newcomers welcome!)

Host: Sean O'Connor