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NPDGamma and n3He - the first two experiments at the Spallation Neutron Source (SNS) Fundamental Neutron Physics Beamline (FNPB) - measured parity-violating (PV) asymmetries in neutron capture in light nuclear systems in order to elucidate the weak interaction in hadronic systems. 

The synthesis of the heaviest nuclei and studies of their properties expands our understanding of the extent and structure of the atomic and nuclear worlds. Recently, ORNL was recognized by the International Union of Pure and Applied Chemistry for contributions to the discovery of two new elements, tennessine (atomic number 117) and moscovium (atomic number 115).

The COHERENT experiment makes use of the intense, high-quality neutrinos from the Spallation Neutron Source to measure neutrino-nucleus scattering. COHERENT made the first of coherent elastic neutrino-nucleus scattering (CEvNS) in 2017 and its ongoing program with multiple target nuclei will probe physics beyond the standard model, and address questions in nuclear physics and astrophysics.

The High Energy Nuclear Physics Group studies the features of both high temperature and low temperature Quantum Chromo Dynamics (QCD) in strongly interacting matter using ultra high energy collisions of p+p, p+Pb and Pb+Pb at the Large Hadron Collider (LHC) with the A Large Ion Collider Experiment. (ALICE). Presently, the ORNL group leads a large collaboration of US groups conducting a central Barrel Tracking Upgrade (BTU) of the ALICE experiment for a new program of measurements on the Quark Gluon Plasma starting in 2002.