A team of scientists, including researchers from FRIB, published a paper in Communications Physics regarding obtaining an accurate description of low-density nuclear matter, which is crucial for explaining the physics of neutron star crusts. The team introduced a variational Monte Carlo method based on a neural Pfaffian-Jastrow quantum state, which allowed them to model the transition from the liquid phase to neutron-rich nuclei microscopically.
In an article about Germanium detectors, Oak Ridge National Laboratory highlights James “Mitch” Allmond, a research scientist at Oak Ride National Laboratory, who studies low-energy nuclear physics and nuclear astrophysics. At the Facility for Rare Isotope Beams at Michigan State University, Allmond manages the ongoing FRIB Decay Station initiator (FDSi) project.
A team of researchers, including scientists from FRIB, has achieved a breakthrough in understanding the elusive nature of neutrinos—one of the universe’s most mysterious particles. Their findings, published in the journal Nature's 13 February 2025 issue, provide the first direct experimental constraints on the spatial extent, or "quantum size," of a neutrino using a novel precision measurement technique.
In a recent Nature article, scientists—including researchers from the Facility for Rare Isotope Beams—measured the energy width of a lithium-7 nucleus in beryllium-7 decay, setting a lower limit on the spatial extent of neutrino wavepackets. The findings provide insights into neutrino properties and weak nuclear decays.
Recent experimental discoveries are reshaping how scientists view atomic nuclei. Traditionally, nuclei have been classified as either stable or unstable, but this binary distinction overlooks the wide range of nuclear lifetimes, from fleeting moments to times far exceeding the age of the universe. Witek Nazarewicz, John A. Hannah Distinguished Professor of Physics and chief scientist at FRIB, and Lee Sobotka, professor of chemistry and physics at Washington University in St. Louis, wrote an article about the discoveries for Physics Today.
Physical Review Letters has selected the reporting the first new-isotope discovery at FRIB for its Collection of the Year 2024
An Editor's Suggestion in Physical Review C featured a submission authored by a team of scientists that included FRIB researchers. The scientists measured the mass of tin-103, which is just three neutrons away from tin-100, laying the foundation for future high-precision mass measurements of tin-100. The measurement took place using the Low Energy Beam and Ion Trap (LEBIT) located at the Facility for Rare Isotope Beams (FRIB).