Articles tagged with Nuclear Physics
Researchers have developed a method to coherently tile multiple titanium:sapphire crystals together, breaking through the current 10-petawatt limit. This technology enables ultra-intense ultrashort lasers with high conversion efficiencies, stable energies, and broadband spectra.
The Applied Research Center (ARC) is transferring ownership to Jefferson Lab, expanding its campus with a dedicated visitor center and science education center. The facility will support the lab's growing mission in high performance computing and data science.
Physicist Alexandre Deur's study of nucleon spin structure has made significant advances in understanding quantum chromodynamics, a theory that describes how quarks and gluons behave. The research, conducted at Jefferson Lab, involves studying the nucleon at high, intermediate, and low beam energies to see how its properties change wit...
Researchers detect ultra-high-energy cosmic ray with an energy level comparable to the 'Oh-My-God' particle, raising questions about its origins. The Amaterasu particle's unusual properties are being further investigated through upgraded experiments and next-generation observatories.
The U.S. Department of Energy and French Alternative Energies and Atomic Energy Commission have signed a Statement of Interest to launch the Electron-Ion Collider, a unique facility for exploring matter's building blocks. The agreement aims to strengthen international collaboration and future contributions to the EIC project.
Nine graduate students will collaborate with leading nuclear physicists at Jefferson Lab on cutting-edge projects exploring fundamental forces and particles. The fellowships provide financial support and resources to advance the field of nuclear physics.
Researchers have successfully excited a scandium-45 nuclear isomer using X-ray pulses, paving the way for the creation of the world's most precise clock. The breakthrough has significant implications for fields such as nuclear physics, satellite navigation, and telecommunications.
The Nuclear Science Advisory Committee has released a new long range plan, prioritizing the capitalization of substantial research investments to advance discovery in nuclear physics. The plan recommends increasing the research budget and continuing effective operation of national user facilities.
Researchers at GSI Helmholtzzentrum and RIKEN successfully produced and detected the long-sought oxygen atomic nucleus 28O for the first time. The experiment utilized the meter-high neutron detector NeuLAND, developed for FAIR accelerator center.
The Antihydrogen Laser Physics Apparatus (ALPHA) collaboration has measured gravity's effect on antimatter for the first time, confirming it falls downwards. This breakthrough could help explain the universe's lack of antimatter.
Researchers at DESY and European XFEL developed a new generation of atomic clocks using scandium, enabling unprecedented precision. The team detected an extremely narrow resonance line in the element's nucleus, which enables accuracy of one second in 300 billion years.
Researchers explore nucleon resonances, gaining insight into early universe's chaotic state. The experiment provides new information on the 3D structure of resonating protons and neutrons.
A research team led by Associate Professor Wataru Horiuchi and Professor Naoyuki Itagaki from Osaka Metropolitan University successfully demonstrated the existence of dineutron-dineutron clusters in helium-8 nuclei. Their findings provide new insights into the binding forms of neutrons and shed light on the origins of elements around us.
A team of researchers has found a way to control the spin density in diamond by applying an external laser or microwave beam. This technique could enable the development of more sensitive quantum sensors and improve the sensitivity of existing nanoscale quantum-sensing devices.
Peter Hurck, the 2023 JSA Postdoctoral Prize winner, is conducting data analyses to identify strange particles and learn about their properties. He hopes to improve data analysis methods for these particles using high-quality data from GlueX experiments.
Allison Zec has achieved the world record in precise measurement of an electron beam’s polarization, measuring it to within half a percent. Her work on the CREX Compton polarimeter was recognized with the prestigious JSA Thesis Prize, awarded by the U.S. Department of Energy's Thomas Jefferson National Accelerator Facility.
Researchers at MIT have taken the first direct images of fermion pairs in a cloud of atoms, shedding light on how electrons form superconducting pairs that glide through materials without friction. The observations provide a visual blueprint for how electrons may pair up in superconducting materials.
New measurements from RHIC's STAR detector suggest the shape of small quark-gluon plasma drops is influenced by the substructure of smaller projectile nuclei. This contradicts previous findings from PHENIX detector, which attributed QGP shape to larger-scale positions of nucleons. The results may deepen understanding of properties and ...
A new publication by the PHENIX Collaboration at RHIC's Relativistic Heavy Ion Collider provides definitive evidence that gluon spins are aligned in the same direction as the spin of the proton they're in. This result, known as the 'golden measurement,' allows theorists to calculate how much gluons contribute to a proton's spin.
The CALorimetric Electron Telescope (CALET) study found that the movement of cosmic rays is affected by the Sun's magnetic field, causing fluctuations in galactic cosmic rays reaching Earth. The research indicates that electrons are more susceptible to solar modulation than protons.
Researchers have calculated the heavy quark diffusion coefficient, which describes how quickly quarks and gluons transfer their momentum to heavier quarks. The calculation reveals that heavy quarks are strongly interacting with the surrounding plasma, making it difficult for them to change direction.
Researchers at RHIC's STAR Collaboration searched for evidence of a critical point in the way nuclear matter transforms from one phase to another. The study found fluctuation patterns in triton production that might help locate the critical point, a key to understanding the makeup of our universe.
Researchers at RHIC have observed directed flow of hypernuclei, providing insight into hyperon-nucleon interactions. The findings suggest that hypernuclei follow the same mass-scaling pattern as ordinary nuclei, implying similar nucleon-nucleon and hyperon-nucleon interactions.
Researchers have characterized the excitation energy of thorium-229 with great precision, a crucial step towards creating the first nuclear clock. The nuclear clock would register forces inside the atomic nucleus, enabling scientists to delve deeper into fundamental physical phenomena.
The CALET team, including researchers from Waseda University, found that cosmic ray helium particles follow a Double Broken Power Law, indicating spectral hardening and softening in high-energy ranges. This deviation from expected power-law distribution suggests unique sources or mechanisms accelerating and propagating helium nuclei.
Stuart Henderson, director of the Thomas Jefferson National Accelerator Facility, has been recognized by Inside Business as one of the top movers and shakers in the Hampton Roads region. The recognition highlights the lab's present and future mission and its impact on the local economy and research landscape.
The CHEP2023 conference will address computing, networking, and software issues for leading data-intensive science experiments. Key trends and solutions in computing as it applies to research in nuclear and high energy physics will be discussed.
The EIC Center at Jefferson Lab has announced six new research fellowships to advance the science program of the Electron-Ion Collider (EIC). This year's awardees will work on various topics, including the development of instruments and experiments to maximize the potential of the EIC.
James Fast leads Jefferson Lab's EIC project team, focusing on the collider's design and performance baselines. The EIC will study atomic nuclei and unlock secrets of nature's strongest force.
Researchers have made the first-ever observations of how lambda particles, a form of strange matter, are produced by a specific process called semi-inclusive deep inelastic scattering (SIDIS). The study reveals that diquarks, pairs of quarks and gluons, can march through atomic nuclei, contributing to the formation of lambdas.
Jefferson Lab offers a unique opportunity for viewers to explore its world-class facilities, including the Continuous Electron Beam Accelerator Facility and superconducting radiofrequency technology. The lab's innovative research and cutting-edge equipment are showcased through interactive videos and a custom-tailored tour.
Researchers developed an antisymmetrized quasicluster model to represent both cluster and shell structures in a single framework. The model applied to carbon and oxygen revealed significantly different density distributions compared to traditional assumptions.
The MSU facility will provide several thousand additional hours of chip testing capacity annually, addressing the US national shortfall in advanced microelectronics testing. The K500 cyclotron will be used to test electronic components for space-based applications where levels of ionizing radiation are higher than at Earth's surface.
A recent experiment at Jefferson Lab has revealed the radius of the proton's mass generated by gluons, which may have shed light on the origin of its mass. The result indicates that this core has a different size than the proton's well-measured charge radius.
Researchers at Kyoto University have successfully created stable plasmas using microwaves, a key step towards harnessing nuclear fusion's massive energy potential. The team identified three crucial steps in plasma production and used Heliotron J to generate the dense plasmas.
The new center aims to amplify biomedical research and human health applications, fostering collaboration among innovators. BRIC members will have access to resources and support for applying their nuclear physics expertise in new areas.
Researchers use novel method to map gluons in nuclei by tracking particle interactions, offering insights into proton and neutron structure. The technique has potential applications in harnessing quantum entanglement.
Researchers developed a new 'next-event estimator' (NEE) called eTLE to increase Tripoli-4¹'s precision using Monte Carlo simulations. The approach improves accuracy in predicting neutron scattering in crystalline media, paving the way for more accurate predictions in nuclear reactors.
Physicists at the Relativistic Heavy Ion Collider detect sequential dissociation of three distinct upsilon variations in a hot quark-gluon plasma, offering evidence for 'deconfinement.' The findings help scientists better understand the properties of the QGP and its temperature.
Tisca Dorsey has joined the Thomas Jefferson National Accelerator Facility as Director of Business and Finance, bringing her expertise in government operations, contracting, and finance. She will lead the lab's contracting approach and strategy, supporting its growth and expansion.
Scientists at Ohio State University have made a groundbreaking discovery, allowing them to view inside the deepest recesses of atomic nuclei. By studying how different types of particles interact with each other, they were able to map the arrangement of gluons within atomic nuclei with unprecedented precision.
Researchers from Iowa State University and Tufts University are using quantum computing to simulate and study atomic nuclei. They aim to understand the fundamental laws of nature governing nuclear formation in the Big Bang and supernovae.
Atoms encounter high frictional forces when moving towards blackbody radiation at lower temperatures, a phenomenon known as blackbody friction force (BBFF). This effect is particularly strong at lower temperatures and could impact atomic clocks, interferometers, and other high-precision experiments.
The Vertical Test Area at Jefferson Lab achieved a record-breaking 470 superconducting radiofrequency accelerator cavity tests in 2022, driven by improvements made by operations engineer Justin Kent. This milestone demonstrates the facility's versatility and commitment to supporting cutting-edge research.
Gail Frayne has been appointed as the Chief Financial Officer of the Thomas Jefferson National Accelerator Facility, responsible for developing and implementing financial strategies. She brings extensive experience in contract requirements, governance, and risk management to her new role.
Researchers from Waseda University measured the energy spectrum of boron and the B/C flux ratio in high-energy cosmic rays using the CALorimetric Electron Telescope. The results indicate a different spectral index for boron compared to carbon, with implications for our understanding of cosmic ray propagation mechanisms.
Scientists successfully synthesized the elusive Λ(1405) particle and measured its complex mass, revealing a temporary bound state of a K- meson and proton. The findings may provide insights into the interior of ultra-dense neutron stars and the early formation of the Universe.
Hernandez-Garcia was recognized for his efforts to bring undergraduate students from Mexico to Jefferson Lab for a 10-week summer study program, where they gain hands-on experience with accelerator R&D test stands. The program has led to several students earning Ph.D.s in accelerator physics and pursuing careers in the field.
Researchers find phi mesons exhibit a clear preference for global spin alignment, contradicting conventional explanations. The results hint at the presence of local fluctuations in the strong force, which could be measured and provide new insights into this fundamental force.
Researchers used computer modeling to simulate a nuclear explosion and found that high airspeeds remain a considerable hazard inside buildings. The tight spaces can increase airspeed, causing severe injuries or fatalities.
Physicists have discovered a way to observe quantum interference between dissimilar particles, allowing for the creation of high-precision images of gluon distributions within atomic nuclei. This technique enables researchers to better understand the force holding quarks and gluons together in atomic nuclei.
The UTSA-led Consortium on Nuclear Security Technologies (CONNECT) has received a five-year, $5 million grant from the U.S. Department of Energy's National Nuclear Security Administration. The program aims to educate and train the next generation of scientists and engineers in nuclear security, with a focus on underrepresented students.
Scientists at Brookhaven Lab will develop a comprehensive theoretical framework for describing the interaction of heavy-flavor particles with quark-gluon plasma. The Heavy-Flavor Theory Collaboration aims to provide insights into the properties of quark-gluon plasma and its precursors in nuclear matter.
The SURGE Topical Theory Collaboration aims to develop calculations and a theoretical framework for discovering the saturated state of gluons. Scientists hope to gain deeper insight into the strong force and gluons' role in generating hadron properties.
The US Department of Energy has awarded $35 million in grants to three joint projects between Nuclear Physics and Advanced Scientific Computing Research programs. These projects aim to optimize software tools for calculations of quantum chromodynamics, which describes the structure of protons and neutrons, using powerful supercomputers...
Mark Jones has been appointed as the new group leader of Jefferson Lab's Experimental Halls A and C. He aims to advance nuclear physics research by supporting vetted experiments and exploring new ideas. Jones brings deep experience in nuclear physics, equipment, and analysis, having worked at the lab since 1992.
Researchers have developed a new model that combines nuclear physics and string theory to describe the transition to dense and hot quark matter in neutron star collisions. The model allows for the calculation of gravitational-wave signals, showing that both hot and cold quark matter can be produced.
Researchers investigated open star clusters, finding they dissolve faster than predicted by Newton's laws. The team developed a new method to count stars in tidal tails, revealing a significant difference in the number of stars between the front and rear tails.
Nuclear physicists have confirmed a bump in the data of proton structure measurements, revealing an unexplained spike in electric polarizability. The anomaly is puzzling experts, who believe it may indicate an unknown facet of the strong force at work.
A breakthrough computer model from Chalmers University of Technology reveals the properties of an atomic nucleus, providing insights into the strong force that governs neutron star behavior. The model predicts a surprisingly thin neutron skin, which could lead to increased understanding of heavy element creation in neutron stars.