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Laser Spectroscopic Determination of the 6He Nuclear Charge Radius
L. -B. Wang, P. Mueller, K. Bailey +12
We have performed precision laser spectroscopy on individual 6He (t1/2 = 0.8 s) atoms confined and cooled in a magneto-optical trap, and measured the isotope shift between 6He and…
Fine Structure of the 1s3p ^3P_J Level in Atomic ^4He: Theory and Experiment
P. Mueller, L. -B. Wang, G. W. F. Drake +3
We report on a theoretical calculation and a new experimental determination of the 1s3p ^3P_J fine structure intervals in atomic ^4He. The values from the theoretical calculation o…
One million year old groundwater in the Sahara revealed by krypton-81 and chlorine-36
N. C. Sturchio, X. Du, R. Purtschert +15
Measurements of 81Kr/Kr in deep groundwater from the Nubian Aquifer (Egypt) were performed by a new laser-based atom-counting method. 81Kr ages range from \~2x10^5 to ~1x10^6 yr, c…