Articles tagged with Nuclear Physics
For the first time, astronomers have measured the speed of fast-moving jets in space, crucial to star formation and the distribution of elements needed for life. The jets of matter, expelled by stars deemed 'cosmic cannibals', were found to travel at over one-third of the speed of light.
A team from the University of Copenhagen contributed to an Antarctic experiment studying neutrinos, which may hold the answer to whether gravity also exists at the quantum level. The study found no conclusive changes in neutrino properties, but the results do not exclude the possibility of quantum gravity.
Researchers aim to create a nuclear clock using thorium isotopes, which could increase measurement accuracy by a factor of 3. The project uses light with orbital angular momentum to excite the nucleus, emitting photons that can be detected. This technology has the potential to answer fundamental questions in physics and astronomy.
A Rice University team, led by Wei Li, has received a $15.5 million grant to develop an ultra-fast silicon timing detector for the CMS experiment at the LHC. This technology will enable breakthrough science in heavy ion collisions and provide insights into the strong nuclear force.
Researchers from Massey University and Michigan State University discuss the limit of the periodic table with recent advances in superheavy element research. They aim to uncover properties of atoms and nuclei beyond the current atomic number and mass.
Scientists at Argonne National Laboratory have developed a nanocryotron, a prototype for an on-off switch that can amplify weak electrical signals from tiny particles in collider experiments. The device could help facilitate the operation of new particle colliders and improve the accuracy of observations.
The study reveals insights into topological materials by visualizing the motion of coupled pendula, reproducing behaviors of electrons in periodic systems. The researchers directly measure Bloch oscillations and Zener tunneling phenomena, previously impossible to observe in quantum systems.
Researchers at Jefferson Lab shattered a nearly 30-year-old record for parallel spin measurement within an electron beam, achieving unprecedented precision. This achievement sets the stage for high-profile experiments that could lead to groundbreaking discoveries in physics.
Scientists at STAR collaboration observe magnetic field's impact on charged particles, providing new insight into quark-gluon plasma's electrical conductivity. The findings give scientists a way to study QGP's fundamental properties, shedding light on the universe's most powerful magnetic fields.
A team of researchers has successfully created five new isotopes at the Facility for Rare Isotope Beams, bringing the stars closer to Earth. These isotopes, known as thulium-182, thulium-183, ytterbium-186, ytterbium-187 and lutetium-190, represent a significant milestone in nuclear science and offer new opportunities for experimentation.
Experts summarize the current state of knowledge and challenges in creating superheavy elements. The 'island of enhanced stability' is confirmed experimentally, but its size and location remain unknown. Breakthrough results have been obtained on production, nuclear structure, and chemical properties.
Researchers from the University of Rochester's Laboratory for Laser Energetics demonstrated an effective 'spark plug' for direct-drive methods of inertial confinement fusion (ICF), achieving a plasma hot enough to initiate fusion reactions. The successful experiments use the OMEGA laser system, with the goal of eventually producing fus...
Researchers at TU Dortmund University have developed a highly durable time crystal that outlasts previous experiments by tens of thousands of times. The team discovered a way to stabilize the crystal using nuclear spins, enabling it to maintain its periodic behavior for up to 40 minutes.
The EIC is a unique facility that will collide high-energy polarized electrons with protons or heavier ions, revealing the structure and properties of atomic nuclei. France's National Center for Scientific Research and U.S. Department of Energy have signed a Statement of Interest to strengthen their joint interest in advancing fundamen...
Researchers at Jefferson Lab measure proton's mechanical properties, including internal pressure and shear stress, using a framework connecting gravity to the strong force. This breakthrough reveals new details about the distribution of the strong force inside the proton.
Researchers found an unknown object orbiting a rapidly spinning millisecond pulsar, weighing more than the heaviest neutron stars and less than the lightest black holes. The discovery was made using the MeerKAT Radio Telescope and could reveal new insights into black holes and neutron stars.
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.