A Precise Few-nucleon Size Difference by Isotope Shift Measurements of Helium
Description:
We perform high precision measurements of an isotope shift between the two stable isotopes of helium. We use laser excitation of the 2^3 S_1-2^3 P_0 transition at 1083 nm in a metastable beam of 3He and 4He atoms. A newly developed tunable laser frequency selector along with our previous electro-optic frequency modulation technique provides extremely reliable, adaptable, and precise frequency and intensity control. The intensity control contributes negligibly to overall experimental uncertai…
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Date:
August 2015
Creator:
Hassan Rezaeian, Nima
Partner:
UNT Libraries