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RSS FeedsEn route to the optical nuclear clock
(PHYSorg.com Physics)

 
 

18 april 2018 20:17:19

 
En route to the optical nuclear clock
(PHYSorg.com Physics)
 


The nucleus of thorium-229 possesses a property that is unique among all known nuclides: It should be possible to excite it with ultraviolet light. To date, little has been known about the low-energy state of the Th-229 nucleus that is responsible for this property. Together with their colleagues from Munich and Mainz, researchers at the Physikalisch-Technische Bundesanstalt (PTB) have now performed the first-ever measurements - using optical methods - of some important properties of this nuclear state such as the shape of its charge distribution. In this way, a laser excitation of the atomic nucleus can be monitored, thus allowing an optical nuclear clock to be realized that `ticks` more precisely than present-day atomic clocks. The scientists have reported their results in the current issue of Nature.


 
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