Like protons and neutrons, Lambda particles consist of three quarks bound together by gluons. But unlike protons and neutrons, which contain a mixture of up and down quarks, Lambdas also contain a strange quark.
The tantalum isotope, Ta-180m, is found naturally in a long-lived excited state. However, the radioactive decay of this excited state in Ta-180m has never been observed.
Researchers at the U.S. Department of Energy’s Argonne National Laboratory have created a new material that uses “redox gating” to control the movement of electrons in and out of a semiconducting material.
Theoretical models can fill the gaps in experimental physics, but using a single imperfect theoretical model can be misleading. To improve the quality of predictions, researchers created a machine learning method that combines the results of several imperfect models.
Our Senior Fellow Professor Enge Wang recently visited HKIAS between 4 March to 8 March 2024 and participated in academic exchanges at City University of Hong Kong (CityUHK).
Neutron star mergers are a treasure trove for new physics signals, with implications for determining the true nature of dark matter, according to research from physicist Bhupal Dev at Washington University in St. Louis.
Early in Hertz Fellow Alex Siegenfeld’s PhD program, he found himself unmotivated by his research and knew something had to change. His turning point overlapped with the 2016 Hertz Summer Workshop, where he discussed his concerns with other fellows.
Hertz Fellow Katelin Schutz thinks existing experimental data across many fields of physics and cosmology can be re-analyzed through a “dark matter lens.”
Stimulated Raman scattering is a powerful spectroscopic technique that unveils molecular vibrational and rotational information, providing invaluable insights into the composition and dynamics of diverse materials. A novel approach for stimulated Raman scattering spectroscopy has been introduced, utilizing offset-phase controlled femtosecond-pulse bursts. This innovative technique not only achieves very high spectral resolution but also enables high-speed spectral acquisition. By broadening the applications of stimulated Raman scattering, it represents a noteworthy advancement in spectroscopic capabilities.
From televisions to X-ray machines, many modern technologies are enabled by electrons that have been juiced up by a particle accelerator. Now, Jefferson Lab has teamed up with General Atomics and other partners to unlock even more applications. The team has designed, built and successfully tested a prototype of a key component of particle accelerators that could enable novel industrial applications of accelerators.
With time scheduled to use a certain beamline at the National Synchrotron Light Source-II (NSLS-II), scientists from NSLS-II and their partner institutions faced a challenge. They planned on researching a special type of region in magnetic materials that could be useful for next-generation computers. Regions in magnetic materials - called magnetic domains - determine a material's magnetic properties. The scientists wanted to study how these magnetic domains changed over time under the influence of an outside magnetic field.
Fashioned from the same element found in sand and covered by intricate patterns, microchips power smartphones, augment appliances and aid the operation of cars and airplanes. Now, PPPL scientists are developing codes that will outperform current simulation techniques and aid the production of microchips using plasma.
Dark matter comprises over 80% of all matter in the cosmos but is invisible to conventional observation, because it seemingly does not interact with light or electromagnetic fields. Now Dr. Sukanya Chakrabarti, the Pei-Ling Chan Endowed Chair in the College of Science at The University of Alabama in Huntsville (UAH), along with lead author Dr. Tom Donlon, a UAH postdoctoral associate, have written a paper to help illuminate just how much dark matter there is in our galaxy and where it resides by studying the gravitational acceleration of binary pulsars. Chakrabarti gave a plenary talk on this work and other methods to measure galactic accelerations at the 243rd meeting of the American Astronomical Society in New Orleans in January.
Thanks to the rapid progress in tiny tech, we've been mainly using microfluidics to sort tiny particles by size. But now, there's a new way to sort them by shape, which could be a big deal for medical tests and chemistry. This study shows off a new method using sound waves to separate oddly shaped particles from round ones, without needing any labels.
A new analysis by the STAR collaboration at the Relativistic Heavy Ion Collider (RHIC), a particle collider at the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory, provides the first direct evidence of the imprint left by what may be the universe’s most powerful magnetic fields on “deconfined” nuclear matter. The evidence comes from measuring the way differently charged particles separate when emerging from collisions of atomic nuclei at this DOE Office of Science user facility.
Kun Luo is combining his experience in materials experimentation and theoretical simulations to explain the atomic mechanisms that create special properties in high-performance materials.
A Princeton-led team composed of engineers, physicists, and data scientists from the University and the Princeton Plasma Physics Laboratory (PPPL) have harnessed the power of artificial intelligence to predict — and then avoid — the formation of a specific plasma problem in real time.