0 ground state hyperfine "clock" transition in buffer gas-cooled ion clouds confined in two similar, but not identical, linear Paul traps. After correction for the known differences between the two ion traps, including significantly different second-order Doppler shifts, the frequencies agree within an uncertainty of less than 2 parts in 10(13). Our best value, based on an analytic model for the second-order Doppler shift, for the frequency of the clock transition of an isolated ion at zero temperature, velocity, electric field and magnetic field, is 12642812118.466+0.002 Hz.
| Entry Date(s): |
Date Created: 19970101 Date Completed: 20121002 Latest Revision: 20080204 |
| Update Code: |
20221213 |
| DOI: |
10.1109/58.585119 |
| PMID: |
18244132 |
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| Autor: |
Fisk PH; Nat. Meas. Lab., CSIRO, Lindfield, NSW., Sellars MJ, Lawn MA, Coles G |
| Jazyk: |
angličtina |
| Zdroj: |
IEEE transactions on ultrasonics, ferroelectrics, and frequency control [IEEE Trans Ultrason Ferroelectr Freq Control] 1997; Vol. 44 (2), pp. 344-54. |
| DOI: |
10.1109/58.585119 |
| Abstrakt: |
We have measured the frequency of the (171)Yb(+) 12.6 GHz M(F)=0-->0 ground state hyperfine "clock" transition in buffer gas-cooled ion clouds confined in two similar, but not identical, linear Paul traps. After correction for the known differences between the two ion traps, including significantly different second-order Doppler shifts, the frequencies agree within an uncertainty of less than 2 parts in 10(13). Our best value, based on an analytic model for the second-order Doppler shift, for the frequency of the clock transition of an isolated ion at zero temperature, velocity, electric field and magnetic field, is 12642812118.466+0.002 Hz. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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