Real-time monitoring of advanced nuclear fuel now possible with new test bed
In its March/April issue, CoVaBIZ magazine has named Jefferson Lab Director Kimberly Sawyer as one of its 150 most influential people in coastal Virginia.
Four MSU researchers named AAAS Fellows
Through the weak nuclear force, one quark flavor can transmute into another. However, current data and theory indicate that the probabilities of quark flavor transmutation do not add up to 100%, as predicted by the Standard Model of Particle Physics. To understand whether this is due to physics beyond the Standard Model or underestimated uncertainties, nuclear theorists laid out a new framework needed to extract the up-down quark flavor mixing with a precision of a few parts in ten thousand from certain nuclear beta decays.
U.S. Department of Energy approves start of execution of $49.7M project: High Transmission Beam Line at FRIB
Today, the Relativistic Heavy Ion Collider (RHIC), a U.S. Department of Energy (DOE) Office of Science user facility for nuclear physics research at DOE's Brookhaven National Laboratory, entered its 25th and final year of operations, smashing together the nuclei of gold atoms traveling close to the speed of light.
Atomic nuclei with 鈥渕agic numbers鈥� of protons or neutrons in their nuclear shells are extremely stable. Nuclear physicists are especially interested in nuclei with doubly magic numbers鈥攖hose that have full shells for both protons and neutrons. One example is the tin isotope Sn-100, which has 50 protons and 50 neutrons. To prepare for future work on Sn-100, researchers studied the properties of isotopes of indium as they approached 50 neutrons. This helps to demonstrate how adding single particles changes the properties of a nucleus.
Simulations of equations from the Standard Model of particle physics are too difficult for classical supercomputers. In this research, scientists for the first time created scalable quantum circuits to prepare a simulation of the starting state for a particle accelerator collision to test aspects of strong interactions. The researchers first determined these circuits for small systems using classical computers, then scaled the quantum circuits to a large system on more than 100 qubits of IBM鈥檚 quantum computers.
KINGSTON, R.I. 鈥� March 6, 2025 鈥� Observations of the merger of binary neutron stars are vital to the growing field multi-messenger astronomy. The collision of these massive star remnants, occurring millions of light years from Earth, emit gravitational waves followed by light. They provide unique opportunities for the study of gravity and matter under extreme conditions, with exciting implications for nuclear physics and cosmology.
Two experiment collaborations, the g2p and EG4 collaborations, combined their complementary data on the proton鈥檚 inner structure to improve calculations of a phenomenon in atomic physics known as the hyperfine splitting of hydrogen. An atom of hydrogen is made up of an electron orbiting a proton. The overall energy level of hydrogen depends on the spin orientation of the proton and electron. If one is up and one is down, the atom will be in its lowest energy state. But if the spins of these particles are the same, the energy level of the atom will increase by a small, or hyperfine, amount. These spin-born differences in the energy level of an atom are known as hyperfine splitting.
Using the Frontier supercomputer at the Department of Energy鈥檚 Oak Ridge National Laboratory, researchers have developed a new technique that predicts nuclear properties in record detail.
Sandia National Laboratories and the nuclear security enterprise have achieved a significant milestone for the nation鈥檚 nuclear deterrence program with the completion of the last production unit of the B61-12 nuclear gravity bomb in December. While the last production unit is now complete, the B61-12 program is still producing spare components and pursuing program closeout activities into fiscal year 2026.
An early-career physicist mathematically connects timelike and spacelike form factors, opening the door to further insights into the inner workings of the strong force. A new lattice QCD calculation connects two seemingly disparate reactions involving the pion, the lightest particle governed by the strong interaction. One reaction is known as the spacelike process, where an electron is bounced off a pion.
Relying on leading-edge germanium detectors developed by researchers at the Department of Energy鈥檚 Oak Ridge National Laboratory, the scientific community pursues elusive nuclear processes to unlock persistent mysteries. Answers to questions they hope to resolve hold the potential to redefine the universe itself.
Research team led by Dr. Seo at KERI develops radiation resistance evaluation technology for SiC power semiconductors Securing reliability through Korea鈥檚 1st high-energy space environment simulation analysis, publishing the paper in international journal
Researchers have been working for decades to understand the details of where the proton gets its intrinsic angular momentum, otherwise referred to as its spin. Recently, there have been indications that the spin contribution of the gluons could either be positive or negative. Now, a new approach that avoids assumptions and re-analyzes observational data with lattice quantum chromodynamics points strongly toward a positive gluon spin contribution, 鈭唃, to the proton spin.
Researchers at Argonne have discovered that superconducting nanowire photon detectors can also be used as highly accurate particle detectors, and they have found the optimal nanowire size for high detection efficiency.
Physicists know from previous experiments that what happens at the nuclear scale to protons and neutrons also affects their constituent quarks and gluons. A novel new framework has tapped on short-range correlations 鈥� brief pairings of protons and neutrons - to decipher the particles鈥� choreography and reveal this connection.
Today, the U.S. Department of Energy (DOE) announced it is accepting applications for the 2025 DOE Office of Science Early Career Research Program to support the research of outstanding scientists early in their careers. The program will support over 80 early career researchers for five years at U.S. academic institutions, DOE national laboratories, and Office of Science user facilities.
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