Measuring the Speed of Sound in Dense Nuclear Matter

Theoretical physicists have proposed a new method to measure the speed of sound in quark-gluon plasma. The speed of sound is determined by a material’s properties, so measuring it helps scientists understand that material. These studies reveal the way quarks and gluons interact with each other and offers new insights on matter in the early Universe.

Brookhaven Lab and Euclid Techlabs to Develop Coated Cathodes for Electron-Ion Collider

The protective coatings are intended to extend the lifetime of the materials for applications in nuclear physics facilities.

The Magic Is Gone for Neutron Number 32

Protons and neutrons orbit atomic nuclei in shells with caps on how many protons or neutrons they can hold. Full shells mean stable, compact nuclei. Physicists call the number of protons or neutrons in a “magic” numbered full shell. New research shows that a previously reported “magicity” for number 32 does not appear in neutron-rich potassium isotopes.

Results from Search for ‘Chiral Magnetic Effect’ at RHIC

Physicists from the STAR Collaboration of 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, presented long-awaited results from a “blind analysis” of how the strength of the magnetic field generated in certain collisions affects the particles streaming out.

Postdoc Picks at the Three-Particle Problem

Andrew Jackura wants to know what we’re made of. Now, as the winner of the 2021 Jefferson Science Associates (JSA) Postdoctoral Prize, he’ll get the chance to find out. Jackura is a postdoctoral research scientist at Old Dominion University and a scientific user at the U.S. Department of Energy’s Thomas Jefferson National Accelerator Facility. His research focuses on the strong nuclear force, the fundamental force responsible for keeping all ordinary matter in the universe together, including us.

Thesis Prize Winner Targets a Proton Puzzle

The proton was discovered just over a hundred years ago and has been intensely studied ever since. Yet, there’s still more to learn about this important building block of the visible universe. Now, work toward a better understanding of the proton carried out at the Department of Energy’s Thomas Jefferson National Accelerator Facility has earned Weizhi Xiong the 2020 Jefferson Science Associates (JSA) Thesis Prize.

Collisions of Light Produce Matter/Antimatter from Pure Energy

Scientists studying particle collisions at the Relativistic Heavy Ion Collider have produced definitive evidence for two physics phenomena predicted more than 80 years ago: that matter/antimatter can be generated directly from collisions of photons and that a magnetic field can bend polarized light along different paths in a vacuum.

Scientists Further Their Investigation into the Origin of Elements in the Universe

The slow neutron-capture process (the s-process) in nucleosynthesis results in about half of the elements heavier than iron in the universe. Two important reactions in the s-process are Neon-22 (alpha, gamma) and Neon-22 (alpha, neutron), which affect the abundances of elements such as Selenium, Krypton, Rubidium, Strontium, and Zirconium. Researchers recently used two indirect methods to study the reactions.

Unlocking radiation-free quantum technology with graphene

“Heavy fermions” are an appealing theoretical way to produce quantum entangled phenomena, but until recently have been observed mostly in dangerously radioactive compounds. A new paper shows it is possible to make them in subtly modified graphene

Argonne announces 2022 Maria Goeppert Mayer Fellows, honoring the legacy of the physics Nobel Laureate

Argonne’s Maria Goeppert Mayer is one of only four women to win the Nobel Prize in physics. Today, on her 115th birthday, Argonne announces the award of its 2022 Maria Goeppert Mayer Fellowship to four outstanding early-career doctoral scientists.

Department of Energy Announces $2.85 Million to Support Undergraduate Research Traineeships at HBCUs and other MSIs

Today, the U.S. Department of Energy awarded over $2.85 million with a focus on broadening and diversifying the nuclear and particle physics research communities through research traineeships for undergraduates from Historically Black Colleges and Universities and other Minority Serving Institutions.

Application of new scientific techniques for corrosion protection

The overall growth of the Industry 4.0 and subsequent demand for new innovative materials opens a new field of mechanism to control premature degradation of the material. This book entitled ‘Corrosion Science-Modern Trends and Applications’ with twelve high-quality chapters provided…

Australian researchers create quantum microscope that can see the impossible

In a major scientific leap, University of Queensland researchers have created a quantum microscope that can reveal biological structures that would otherwise be impossible to see. This paves the way for applications in biotechnology, and could extend far beyond this…

Machine Learning System Improves Accelerator Diagnostics

A machine learning system is helping operators resolve routine faults at the Continuous Electron Beam Accelerator Facility (CEBAF). The system monitors the accelerator cavities, where faults can trip off the CEBAF. The system identified which cavities were tripping off about 85% of the time and identified the type of fault about 78% of the time.

Wayne State physics professor awarded DOE Early Career Research Program grant

Chun Shen, Ph.D., assistant professor of physics and astronomy in Wayne State University’s College of Liberal Arts and Sciences, was awarded a five-year, $750,000 award from the U.S. Department of Energy’s Early Career Research Program for his project, “Quantitative Characterization of Emerging Quark-Gluon Plasma Properties with Dynamical Fluctuations and Small Systems.”

New Technique Studies the Structure of Exotic Hadrons

Scientists don’t know how exotic hadrons with a larger number of quarks are structured—are they tightly bound hadrons or a compound of two hadrons similar to molecules? Now, scientists have developed a new technique to identify the nature of the χc1(3872, a four-quark hadron. This is the first time scientists have discovered the structure of a particle by observing how it interacts with nearby particles.

DOE names six Argonne scientists to receive Early Career Research Program awards

Six Argonne scientists receive Department of Energy’s Early Career Research Program Awards.

Signs of “Turbulence” in Collisions that Melt Gold Ions

A new analysis of collisions of gold ions shows signs of a “critical point,” a change in the way one form of matter changes into another. The results hint at changes in the type of transition during the shift from particles to the quark-and-gluon “soup” that filled the early universe. This helps scientists understand how particles interact and what holds them together.

Searching for the Origins of Presolar Grains

Some meteorites contain microscopic grains of stardust created by nucleosynthesis before our solar system existed. Many grains contain sulfur isotopes that are clues to the grains’ origins in novae and supernovae. Sulfur production from nucleosynthesis depends on the prior production of argon-34. Scientists created and studied argon-34 and established criteria for determining whether particular grains originated in novae or supernovae.

Nuclear terrorism could be intercepted by neutron-gamma detector that pinpoints source

Scanning technology aimed at detecting small amounts of nuclear materials was unveiled by scientists in Sweden today, with the hope of preventing acts of nuclear terrorism. Bo Cederwall, a professor of physics at KTH Royal Institute of Technology, says the…