Theoretical physicists and experimentalists worked together to measure the mass of a rare isotope expected to form a rare proton halo, publishing the first results from FRIB’s Precision Measurement Program. Credit: FRIB
The LEBIT team, led by Ryan Ringle, adjunct professor of physics at FRIB and in the MSU Department of Physics and Astronomy and senior scientist at FRIB, and Georg Bollen, University Distinguished Professor of Physics and FRIB Experimental Systems Division director, recently published a research paper that used the facility to take a step in verifying the mass of aluminum-22.
While the team was able to accurately measure the mass of aluminum-22, it is only part of verifying the isotope’s proton halo structure. The LEBIT researchers’ colleagues in the Beam Cooler and Laser Spectroscopy facility at FRIB now plan to take the next step in verifying the proton halo by measuring the charge radius—the distribution of protons around the nucleus—as well as how much the nucleus may be deformed from its traditional, spherical shape.
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