On Feb. 23, researchers announced initial measurements from an experiment searching for the decay of metastable isomer tantalum-180. The measurements were based on the first 229 days of data-taking from the experiment located nearly a mile underground at the Sanford Underground Research Facility (SURF) in Lead, South Dakota.
Click here for original story, Researchers searching for decay of nature’s rarest isotope announce initial measurements
Source: Phys.org