Feature Channels: Nuclear Physics

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Newswise: Chasing and Counting Mesons
Released: 18-Jul-2024 10:05 AM EDT
Chasing and Counting Mesons
Thomas Jefferson National Accelerator Facility

Karthik Suresh’s doctoral dissertation on meson decay in the ongoing GlueX Collaboration at Jefferson Lab has just earned the prestigious 2023 Jefferson Science Associates (JSA) Thesis Prize.

Released: 16-Jul-2024 10:05 AM EDT
Pooling Skills to Study a Slippery Particle
Thomas Jefferson National Accelerator Facility

A combination of supercomputing and traditional techniques has allowed Jefferson Lab theorists to better describe the unstable sigma meson particle, contributing to our comprehension of the strong interaction.

Newswise: Oxygen Tweaking May be Key to Accelerator Optimization
Released: 11-Jul-2024 5:05 PM EDT
Oxygen Tweaking May be Key to Accelerator Optimization
Thomas Jefferson National Accelerator Facility

Researchers at the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility are exploring how adding oxygen to the surfaces of particle accelerator cavities, one of the most critical parts of an accelerator, can help scientists custom-tailor their properties for maximum efficiency and minimum cost.

Newswise: Scientists Study How Bc Mesons Form to Gain More Information from Ultra-Relativistic Heavy-Ion Collisions
Released: 10-Jul-2024 2:05 PM EDT
Scientists Study How Bc Mesons Form to Gain More Information from Ultra-Relativistic Heavy-Ion Collisions
Department of Energy, Office of Science

Scientists use collisions of heavy ions to produce quark-gluon plasma containing large numbers of the heavy charm and bottom quarks. The recombination of freely moving charm and bottom quarks facilitates the production of Bc mesons. In this study, researchers carried out theoretical simulations of charm and bottom quarks diffusing through the quark gluon plasma and found that these quarks’ recombination can enhance the production of Bc mesons.

Newswise: Research Offers New Insights into the Mechanisms of How Quarks Combine
Released: 8-Jul-2024 3:05 PM EDT
Research Offers New Insights into the Mechanisms of How Quarks Combine
Department of Energy, Office of Science

Groups of three quarks form stable composite particles called baryons (such as protons and neutrons), while pairs of quarks form unstable mesons. New measurements from the Large Hadron Collider beauty (LHCb) experiment show surprising variations in the rate at which baryons are produced, defying previous expectations.

Released: 3-Jul-2024 12:05 PM EDT
U.S. Department of Energy Issues Request for Proposals for Contractor to Manage and Operate Thomas Jefferson National Accelerator Facility
Department of Energy, Office of Science

Today, the U.S. Department of Energy (DOE) announced the issuance of a Request for Proposals (RFPs) for the competitive selection of a management and operating contractor for the Thomas Jefferson National Accelerator Facility (TJNAF).

Newswise: A fresh set of eyes on next-generation nuclear reactors
Released: 25-Jun-2024 4:05 PM EDT
A fresh set of eyes on next-generation nuclear reactors
Argonne National Laboratory

Five early and mid-career scientists from Argonne National Laboratory divide and conquer varied challenges to improve nuclear science and technology and help the U.S. meet its future energy goals.

Newswise: How Sticky Is Dense Nuclear Matter?
Released: 24-Jun-2024 3:05 PM EDT
How Sticky Is Dense Nuclear Matter?
Department of Energy, Office of Science

Theorists have performed the first systematic study of whether and how the viscosity of quark gluon plasma from heavy nuclei collisions changes over a wide range of collision energies. The calculations predict that the fluid’s viscosity increases with net-baryon density. The results will help researchers probe the entire phase diagram of nuclear matter.

Newswise: Hardy transistor material could be game-changer for nuclear reactor safety monitoring
Released: 24-Jun-2024 9:05 AM EDT
Hardy transistor material could be game-changer for nuclear reactor safety monitoring
Oak Ridge National Laboratory

The safety and efficiency of a large, complex nuclear reactor can be enhanced by hardware as simple as a tiny sensor that monitors a cooling system. That’s why researchers at the Department of Energy’s Oak Ridge National Laboratory are working to make those basic sensors more accurate by pairing them with electronics that can withstand the intense radiation inside a reactor.

Released: 10-Jun-2024 4:05 PM EDT
MOLLER Experiment Baselined and Moving Forward
Thomas Jefferson National Accelerator Facility

The MOLLER experiment has received Critical Decision 2 “Approve Performance Baseline” and Critical Decision 3 “Approve Start of Construction” from the Department of Energy, which provides clearance to move forward with all procurements and equipment construction.

Newswise: New Insights on the Role of Nucleon Exchange in Nuclear Fusion
Released: 10-Jun-2024 9:05 AM EDT
New Insights on the Role of Nucleon Exchange in Nuclear Fusion
Department of Energy, Office of Science

The way protons and neutrons move between two nuclei is key to understanding the processes in low-energy nuclear fusion reactions. As the nuclei draw close enough for the nuclear forces to become effective, neutrons and protons can migrate from one nucleus to another, potentially easing the fusion process.

Newswise: Experimental Physics Leads to Award-Winning Research
Released: 29-May-2024 9:35 AM EDT
Experimental Physics Leads to Award-Winning Research
Thomas Jefferson National Accelerator Facility

Jefferson Lab Staff Scientist Holly Szumila-Vance earns the 2024 Guido Altarelli Award for outstanding contributions to experimental physics.

Newswise: Theory and Experiment Combine to Shine a New Light on Proton Spin
Released: 24-May-2024 1:05 PM EDT
Theory and Experiment Combine to Shine a New Light on Proton Spin
Thomas Jefferson National Accelerator Facility

Nuclear physicists have long been working to reveal how the proton gets its spin. Now, a new method that combines experimental data with state-of-the-art calculations has revealed a more detailed picture of spin contributions from the very glue that holds protons together.

Newswise: Virginia Tech researcher’s breakthrough discovery uses engineered surfaces to shed heat
21-May-2024 11:05 AM EDT
Virginia Tech researcher’s breakthrough discovery uses engineered surfaces to shed heat
Virginia Tech

Splash a few drops of water on a hot pan and if the pan is hot enough, the water will sizzle and the droplets of water seem to roll and float, hovering above the surface.

Newswise: Precision Measurements of Radioactive Molecules for Fundamental Physics
Released: 22-May-2024 4:05 PM EDT
Precision Measurements of Radioactive Molecules for Fundamental Physics
Department of Energy, Office of Science

For the first time, nuclear physicists made precision measurements of the short-lived radioactive molecule, radium monofluoride (RaF). The researchers combined ion-trapping and specialized laser systems to measure the fine details of the quantum structure of RaF. This allowed them to study the rotational energy levels of RaF and determine its laser-cooling scheme.

Newswise: Promethium bound: Rare earth element’s secrets exposed
21-May-2024 11:00 AM EDT
Promethium bound: Rare earth element’s secrets exposed
Oak Ridge National Laboratory

Scientists have uncovered the properties of a rare earth element that was first discovered 80 years ago at the very same laboratory, opening a new pathway for the exploration of elements critical in modern technology, from medicine to space travel.

Newswise: Jefferson Lab Director Named to 2024 Hampton Roads Power List
Released: 21-May-2024 2:05 PM EDT
Jefferson Lab Director Named to 2024 Hampton Roads Power List
Thomas Jefferson National Accelerator Facility

Jefferson Lab Director Stuart Henderson has been named to the 2024 Hampton Roads Power List, compiled by Inside Business. This is Henderson’s 6th appearance on the list.

Newswise: STAR Sees a Magnetic Imprint on Deconfined Nuclear Matter
Released: 17-May-2024 2:05 PM EDT
STAR Sees a Magnetic Imprint on Deconfined Nuclear Matter
Department of Energy, Office of Science

Scientists have the first direct evidence that the powerful magnetic fields created in off-center collisions of atomic nuclei induce an electric current in “deconfined” nuclear matter. The study used measurements of how charged particles are deflected when they emerge from the collisions. The study provides proof that the magnetic fields exist and offers a new way to measure electrical conductivity in quark-gluon plasma.

Released: 13-May-2024 9:35 AM EDT
Oppenheimer Fellows to Gain Broader View of National Labs
Thomas Jefferson National Accelerator Facility

Two physicists at Jefferson Lab have been selected as fellows for the distinguished Oppenheimer Science and Energy Leadership Program (OSELP), considered the highest honor for leadership training among national labs.

Released: 2-Apr-2024 10:05 AM EDT
Electron-Ion Collider Set to Begin Long-Lead Procurements
Brookhaven National Laboratory

The U.S. Department of Energy (DOE) has approved Critical Decision 3A (CD-3A) — the go-ahead for long-lead procurements — for the Electron-Ion Collider (EIC). EIC is a state-of-the-art particle collider for nuclear physics research that will be located at DOE's Brookhaven National Laboratory and built in partnership with DOE's Thomas Jefferson National Accelerator Facility (Jefferson Lab).



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