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Showing 4 results for Researcher: Alan A. Tatum

  • ORNL Placeholder Image

    February 18, 2026

    2 MIN READ

    Experiments conducted between 2002 and 2012 at ORNL studied 31 tin isotopes with varying numbers of neutrons to examine how neutrons affect nuclear stability and nuclear properties. The combined results contributed to identifying tin-132 as a doubly magic nucleus and improved theoretical models of nuclear structure.

  • ORNL Placeholder Image

    January 28, 2025

    7 MIN READ

    In 1945, workers at the Beta calutrons at Y-12 had a crucial mission: to separate uranium used for the atomic bomb Little Boy that was dropped on Hiroshima, Japan, helping bring about the end of World War II.For more than 50 years afterward, the calutrons had a peacetime mission: to separate isotopes of a variety of elements for research use and targets to produce radioisotopes.Now, with the calutrons silent since the late 1990s, a group of isotopes employees last month toured Beta-3 with another mission: to preserve useful and historical artifacts from the deteriorating building.

  • ORNL Placeholder Image

    May 9, 2016

    3 MIN READ

    Oak Ridge National Laboratory's 25-megavolt Tandem Electrostatic Accelerator received an opportunity for one last hurrah in a series of experiments that ended in late March, nearly four years after the Holifield Radioactive Ion Beam (RIB) Facility at the Department of Energy national l...