Articles tagged with Neutrons
A new study from the University of Chicago has laid out the internal structure of polyelectrolyte complexes, a special kind of molecular assembly that helps cells keep themselves organized. The researchers used a combination of simulations and neutron scattering to determine the precise structure of these molecules, which could lead to...
Researchers at Tokyo Institute of Technology developed a novel boron agent that selectively accumulates in brain tumor cells, exhibits enhanced blood retention, and can be administered at low doses. The agent, PBC-IP, shows promising results in preclinical studies, highlighting its potential for radiotherapy in treating glioblastoma.
Soft particles called microgels can shrink abruptly when their concentration in a solvent is increased above a certain threshold, even without physical contact. Researchers have provided experimental proof of this phenomenon using neutrons from the Paul Scherrer Institute's SINQ spallation source.
A joint USTC research group investigated the coupling effect between neutron spin and gravitational force using a high-precision xenon isotope magnetometer. The experimental results revealed that the weight difference between the neutron's spin-up and spin-down states was less than two sextillionths.
Researchers have modeled fractons, stationary quasiparticles, and found they are not visible even at absolute zero temperature due to quantum fluctuations. The team plans to develop a model to regulate these fluctuations, paving the way for experimental materials that could exhibit fractons.
A Cornell astrophysicist explains how the Imaging X-ray Polarimetry Explorer (IXPE) satellite detected polarized X-rays from a magnetar, revealing 'photon metamorphosis' – a transformation of X-ray photons. The phenomenon is a natural consequence of quantum electrodynamics under strong magnetic field conditions.
Researchers have developed software to remove signal interference from neutron experiments under megabar pressures. This enables the accurate extraction of data on extraordinary atomic structures of materials.
A new material analysis method combines resonant X-ray diffraction and solid-state NMR to reveal the chemical order of Mo atoms in disordered Ba7Nb4MoO20. The study provides valuable insights into how a material's properties, such as ion conduction, are influenced by its hidden chemical order.
Researchers analyzed six sealed copper alloy animal coffins using neutron tomography, identifying bones, textiles, and lead fragments that shed light on ancient Egyptian mummification techniques and ritual purposes.
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.
Scientists have created the first 2D map of wind patterns around a neutron star, revealing clues to galaxy formation. The map shows the wind's vertical structure and velocity, which is about 1 million miles per hour, and offers new insights into the influence of disk winds on galaxy evolution.
Researchers observed lithium ions wandering within composite cathodes, revealing limitations in ion delivery that affect battery performance. The findings suggest a previously overlooked development bottleneck for solid-state battery development, highlighting the need to enhance ion transport within cathode composites.
Researchers have made the first accurate image of the proton using neutrinos instead of light as the probe in the MINERvA experiment. The study provides measurements of the proton's structure with unbound protons, helping to build more complete theories of neutrino interactions.
Researchers at Columbia University have developed a new 'camera' that can see atomic structures in real-time, revealing the dynamic disorder of materials. This breakthrough enables better understanding of thermoelectric devices and waste heat conversion, leading to more efficient sustainable energy applications.
Scientists at Oak Ridge National Laboratory used neutrons to map phason and phonon vibrations in fresnoite crystals. They found that phasons carry heat three times faster than phonons, which may improve the accuracy of simulations for energy materials.
The ExPaNDS project is holding four topic-based webinars showcasing how efficient management of data can increase its value through sharing and reuse. The webinars cover Life Sciences, Cultural Heritage Science, Tomography/Imaging, and Industry topics.
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.
Researchers studied the strong nuclear force using nickel-64 nuclei, discovering that they change shapes under high-energy conditions. The team used advanced detectors to analyze gamma rays and particle direction, revealing two possible shapes for the nucleus: oblate and prolate.
Scientists at the University of Waterloo have developed a device that generates twisted neutrons with well-defined orbital angular momentum, enabling researchers to study next-generation quantum materials. The discovery provides an additional quantized degree of freedom for characterizing complicated materials.
Researchers measured the half-lives of five exotic isotopes at the Facility for Rare Isotope Beams (FRIB), a DOE Office of Science user facility. The study provides fundamental information about nuclei near their limits of existence, testing models of the atomic world and advancing research in astrophysics and nuclear physics.
According to new research led by the University of Bath, some short-duration gamma-ray bursts are triggered by the birth of supramassive stars, not black holes. This discovery may offer a new way to locate neutron star mergers and gravitational wave emitters.
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.
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.
A team led by Prof. Alan Tennant and Dr Allen Scheie gain deeper insights into the interactions between spins in KCuF3, a simple model material for Heisenberg quantum spin chain. They use neutron scattering to study spatial and temporal evolution of spins.
Polymers in cable insulation gradually lose their insulating properties due to radiation defects, leading to reduced electrical resistance. A hand-held hardness tester can detect proper insulation by measuring the hardness of the cable insulation.
Astronomers detect massive light burst from 'infant' Universe, revealing properties of cosmic explosions. The GRB was triggered by a space explosion that occurred when the Universe was less than 900 million years old.
A high-precision experiment reveals that protons and neutrons in small nuclei prefer to pair up with others of the same kind more often than expected. The study provides new details about short-distance interactions between particles and may impact results from experiments seeking to tease out further nuclear structure details.
A new experiment at Jefferson Lab found that proton-proton and neutron-neutron collisions were responsible for roughly 20% of all collisions, surprising previous measurements which showed a much smaller share. The discovery improves the precision of previous measurements by a factor of ten.
Researchers at ORNL developed a theory that thylakoids help plants tolerate harsh conditions, while a digital platform informs on hydropower development. AI-powered neutron scattering can also accelerate experiments, and e-waste recycling is being explored.
Scientists from Johns Hopkins APL have compiled the first complete map of hydrogen abundances on the Moon's surface using data collected over two decades ago. The map identifies two types of lunar materials containing enhanced hydrogen and corroborates previous ideas about lunar hydrogen and water.
A team of scientists has successfully built a neutron interferometer using two separate crystals, a major breakthrough in quantum physics. This achievement opens up new possibilities for quantum measurements and research on quantum effects in a gravitational field.
Devi Lal Adhikari's thesis explores mathematical connections between atomic nuclei and neutron stars, shedding light on the structure of both. His research has garnered significant attention from astrophysicists and physicists alike.
Researchers have developed a novel process converting methane into liquid methanol at ambient temperature and pressure using visible light. The method uses a continuous flow of methane/oxygen-saturated water over a novel metal-organic framework (MOF) catalyst, achieving 100% selectivity with no by-products.
Scientists attempt to detect a 'mirror neutron', a dark-matter twin to the neutron, to explain discrepancy in neutron lifetime experiments. The team used a novel disappearance and regeneration technique to perform the first search for oscillations between regular and mirror neutron states.
A research team from TU Darmstadt observed a neutral nucleus, the Tetra Neutron, consisting of four neutrons. The discovery provides a new system to test the nuclear force with pure neutrons, offering insights into neutron-star properties.
Researchers have used high-speed 4D neutron computed tomography to visualize the three-dimensional water distribution within fuel cells. This allows for optimized channel design and increased efficiency, as excess water can be drained without compromising membrane integrity.
Researchers successfully created a two-body time-crystal system in an experiment that challenges our understanding of physics. They also found that time crystals can be used to build useful devices at room temperature, opening up new possibilities for quantum computing.
Researchers at TU Wien and Hiroshima University have corrected a long-standing flaw in the double-slit experiment, proving that individual particles can move along multiple paths at once. By detecting a single neutron, they were able to determine its presence on each path with high accuracy.
The MARATHON experiment has accessed new details about the particles that build our universe by comparing mirror nuclei helium-3 and tritium. The results provided a precise determination of the ratio of proton/neutron structure function ratios, offering new insights into the internal structures of protons and neutrons.
The project will develop a better understanding of nuclear radiation by integrating recent mathematical developments into radiation transport modelling. This will lead to improved nuclear safety, cancer radiotherapy, and shielding for astronauts from cosmic rays.
A new atomic nucleus, 149-Lutetium, has been synthesized at the University of Jyvaskyla, emitting protons with a record-breaking rate. This discovery provides exceptional decay properties and breaks previous records for half-life and decay energy.
Researchers have discovered that magnetic spin waves can propagate on circular paths in certain materials, enabling efficient and compact information transfer. This phenomenon, known as Landau quantization, has significant implications for the development of new electronic components.
Researchers analyzed skin cell data to identify gene expression patterns responsible for inflammation in atopic dermatitis. Crustacean-inspired cotton was found to control water flow through a special wicking mechanism. Autonomous water treatment systems were also developed to improve energy efficiency and waste reduction.
Researchers at Technical University of Munich have developed a new neutron-based method to detect clogs in underwater pipelines non-destructively. This approach uses prompt gamma neutron activation analysis to measure hydrogen concentration, allowing for the detection of blockages and hydrate formation.
Researchers discovered a compact object in supernova AT2018cow, which was a product of a dying star. The team found X-ray pulses indicating an object measuring no more than 1,000 kilometers wide and with a mass smaller than 800 suns.
A team of international researchers challenged Einstein's theory of general relativity using pulsars as a cosmic laboratory. They detected new relativistic effects, including light deflection and time dilation, with unprecedented precision. The study provides significant insights into gravity theories and the fundamental forces of nature.
Physicists at Technical University of Munich discover potential existence of tetra-neutron, a bound state of four neutrons, which could significantly alter our understanding of nuclear forces. The experiment's results suggest a half-life of 450 seconds and stability comparable to the neutron.
Researchers at Tokyo University of Science have reported the first-ever observation of long-range ferromagnetic order in icosahedral quasicrystals. The discovery was made using conventional X-ray diffraction, magnetic susceptibility, and specific heat measurements.
A new imaging method measures individual photons, greatly reducing interference and improving spatial resolution by three times. The technology could also reduce radiation exposure during x-ray imaging, making it ideal for medical applications.
Researchers at Lancaster University successfully transferred digitally encoded information wirelessly using nuclear radiation, achieving 100% successful transmission tests. This novel approach uses fast neutrons, which can penetrate materials like metals, making it ideal for safety-critical scenarios and emergency rescue operations.
Physicists have precisely determined the neutron form factor in a previously unknown energy range, revealing an oscillating pattern and surprising behavior. The findings suggest that nucleons do not have a simple structure, prompting theoretical models to be developed.
An international research team has measured neutron form factors with previously unattained precision, filling a blank space on the map. The new data provides a more comprehensive picture of the neutron's size and lifetime, and reveals oscillating patterns in its form factor.
Researchers create a multiscale model to track water quality indicators like nitrogen and mercury levels, incorporating biogeochemical reactions in microbially-active zones. They also develop 'stretchier' alloys by adding nano structures, which enhance strength and ductility, making them suitable for various applications. Additionally,...
The BESIII experiment has made significant discoveries in the study of charmonium and charmoniumlike states, including the observation of conventional and exotic hadrons. The researchers have also uncovered evidence for the commonality among X(3872), Y(4260), and Zc(3900) states.
Researchers at MIT and UNH find that binary neutron star mergers produce two to 100 times more heavy metals than neutron star-black hole mergers. The study suggests that binary neutron stars are a likely cosmic source for gold, platinum, and other heavy metals.
Physicists have made the most precise measurement yet of a neutron's lifetime, revealing that it lives 14.629 minutes with an uncertainty of 0.005 minutes. This result brings scientists closer to understanding why two previous methods disagree and could provide evidence for new physics.
Two independent studies illuminate unexpected substructures in fundamental components of all matter. One study presents new evidence on the EMC effect by tagging spectator neutrons, offering direct insight into its origin. Meanwhile, a team from Fermilab found evidence that antimatter asymmetry plays a crucial role in nucleon properties.
Scientists have made the second-ever measurement of the free neutron lifetime from space, reducing uncertainty by an order of magnitude. This method could bring to an end a decades-long puzzle in fundamental physics and potentially reveal new physics beyond the standard model.
A new experiment measures the neutron skin in a calcium nucleus, shedding light on proton-neutron interactions. The results will be presented at the 2021 Fall Meeting of the APS Division of Nuclear Physics.
An international team of researchers has made the world's most precise measurement of the neutron's lifetime, which may help answer questions about the early universe. The results represent a more than two-fold improvement over previous measurements, with an uncertainty of less than one-tenth of a percent.