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Physical Review Letters - American Physical Society

We measure isotope shifts for five Yb isotopes with zero nuclear spin on two narrow optical quadrupole transitions S 2 1 / 2 → D 2 3 / 2, S 2 1 / 2 → D 2 5 / 2 with an accuracy of ∼ 300 Hz.The corresponding King plot shows a 3 × 10 − 7 deviation from linearity at the 3 σ uncertainty level. Such a nonlinearity can indicate physics beyond the Standard Model (SM) in the form of a new ...

Buffer gas cooling of a trapped ion to the quantum regime ...

Neutral buffer gas cooling of trapped ions has a long history 18, dating back to when laser cooling was still in its infancy. The development of atom trapping spurred efforts to employ quantum ...

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yb . Lukas Germany Level . 52. Monster Summer Badge. 200 XP . Coach for Asking Questions Follow me on Twitter! View more info. Currently Offline. Profile Awards 1 Badges 57 Inventory Screenshots 3 Reviews 1 Groups 34 ...

Ytterbium(II) chloride - Wikipedia

Ytterbium(II) chloride (Yb Cl 2) is an inorganic chemical compound.It was first prepared in 1929 by W. K. Klemm and W. Schuth, by reduction of ytterbium(III) chloride, YbCl 3, using hydrogen.. 2 YbCl 3 H 2 → 2 YbCl 2 2 HCl. Like other Yb(II) compounds and other low-valence rare earth compounds, it is a strong reducing agent.

PDF High-Resolution, High-Accuracy Spectroscopy of ... - NIST

At CSIRO, a similar standard using clouds of laser-cooled 17*Yb ions in a linear trap has oy(.) = 4.7 x Although these standards are very stable, the second-order Doppler shift from the ion motion is substantial (about 9 x 10-13). At NIST, the goal is to develop a frequency standard that is both stable and accurate. We use a linear t,rap such

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