Articles tagged with Electrons
Researchers at FAU successfully generated controlled electron pulses in the attosecond range using optical travelling waves formed by laser pulses. This breakthrough enables ultrafast movements to be tracked, such as vibrations in atomic lattices and molecular bonds in chemical reactions.
Researchers optimize system to drive two-electron chemical reactions, significantly improving efficiency over one-electron reactions. The discovery enables the conversion of CO2 into liquid fuels, paving the way for practical carbon-recycling systems.
Researchers have devised a new diagnostic tool to measure the brightness and size of high-brightness beams at particle accelerators. The 'charge density monitor' can accurately measure micron-sized beams with femtosecond pulses, enabling precise measurements of fundamental physics in high-energy beam experiments.
Scientists at the Max Born Institute refined our understanding of strong-field processes like high harmonic generation and laser-induced electron diffraction. The study shows that returning electrons retain structural information on their initial molecular orbital, contradicting a commonly held assumption.
Researchers at University of Strathclyde and Capital Normal University have developed a new source of intense terahertz radiation with unprecedented efficiency. This breakthrough could lead to new advances in science and technology, including the identification of normally hidden phenomena and unique control of matter.
A team of scientists from Arizona State University has re-thought the evolutionary history of photochemical reaction centers (RCs). They propose a new pathway that ancient organisms may have taken to evolve the great variety of photosynthetic RCs seen today.
Researchers found that plasmoid reconnection in Mercury's magnetotail could accelerate energetic electrons, solving a puzzle left by previous space missions. The study also revealed that turbulence enhances reconnection, leading to improved predictions for future missions like Bepi-Colombo.
Researchers at UNIGE and MBI successfully place an electron in a dual state, neither free nor bound, and regulate its electronic structure. They also discover that high-intensity lasers can amplify light, enabling new possibilities for intense laser propagation in gases.
A team of researchers from the University of Maryland has discovered a new type of superconductivity in the material YPtBi, which relies on highly unusual electron interactions. The discovery challenges conventional theory and opens up new possibilities for exotic materials.
Scientists have captured compelling evidence for Majorana quasiparticles, which are predicted to form the backbone of a type of quantum computer. The latest experiment uses ultra-thin semiconductor and superconducting aluminum to unlock the particles' presence, with results confirming theoretical predictions and demonstrating robustness.
Researchers at Lomonosov Moscow State University and international colleagues determine ultrashort X-ray laser pulse energy and time characteristics using the angular streaking method. This allows for individual pulse measurement with high temporal resolution, opening up new avenues for studying ultra-fast molecular processes.
Physicists at MSU used high harmonics spectroscopy to study the behavior of electrons in a dielectric material. They found that ultra-short laser pulses can turn the material into a conductor by increasing its kinetic energy and changing its many-body state.
Researchers propose a new particle detector design using doped gallium arsenide crystals that can scan for dark matter signals at lower energies. The technology has the potential to detect particles in the mass range measured in millions of electron volts, expanding the search for dark matter.
Quadrupole topological insulators are a new phase of electronic matter with unusual properties. The researchers created a workable-scale analogue of QTI using printed circuit boards and measured how much microwave radiation was absorbed by each resonator.
Researchers observed attosecond optical-field-enhanced carrier injection into the GaAs conduction band, a process previously thought to be impossible. Intra-band motion plays a significant role in this phenomenon, enhancing the number of electrons excited into the conduction band.
Researchers at the Laboratory for Attosecond Physics have successfully observed non-linear interaction of an attosecond pulse with electrons in one of the inner orbital shells around the atomic nucleus. This breakthrough was made possible by the development of a novel source of attosecond pulses.
Scientists have created a new state of matter called Rydberg polarons, where an electron orbits a nucleus at a great distance while many other atoms are bound inside the orbit. The electrons' path is only slightly influenced by neutral atoms, resulting in a weak bond between the Rydberg atom and the surrounding atoms.
The University of California - Santa Barbara team designed a new spiral inductor made of multiple layers of graphene, which offers one-and-a-half times the inductance density of traditional inductors. This innovative design enables a one-third reduction in size while maintaining high efficiency.
Researchers used time-resolved spectroscopy to study the mechanism of light-dependent hydrogenation of protochlorophyllide. They found evidence of partially stepwise hydride transfer involving three discrete intermediates. This discovery sheds light on how light energy can be harnessed for chemical reactions.
Researchers used a fluid model of plasma turbulence to study heating plasma in a tokamak, revealing impacts of its turbulent behavior, density and temperature gradients. The findings showed that heating electrons caused changes in density gradients within the plasma.
Scientists have successfully observed radiation reaction in a lab experiment, where an ultra-intense laser slows down electrons. This phenomenon is thought to occur near black holes and quasars, and provides insights into quantum effects beyond classical physics.
Researchers at the University of Arizona used a novel technique to observe electrons moving through crystals, shedding light on the unique properties of transition metal dichalcogenides. The study revealed that electrons move differently within and across layers, with implications for future processing technologies.
Proton acceleration is hindered by magnetism, as electrons create a sheath field that accelerates protons at right-angles to the target. This effect, known as magnetic inhibition, progressively worsens at higher laser powers, reducing proton energies.
Researchers at DOE/Princeton Plasma Physics Laboratory have found a way to reduce secondary electron emission by up to 80% using fractal fibers resembling feathers and whiskers. This breakthrough improves the performance of plasma devices such as spacecraft thrusters and particle accelerators.
Researchers measured absolute cross sections for secondary electrons interacting with DNA molecules in a condensed-phase environment. This study provides insights into the damage and radiation dose delivered to patients in radiotherapy.
Scientists from Konstanz, Princeton and Maryland successfully created a stable quantum gate for two-quantum bit systems using silicon. The research demonstrates the ability to control and read out the interaction of two quantum bits with high fidelity, paving the way for more efficient quantum computers.
Scientists at Freie Universität Berlin and Ruhr-Universität Bochum have discovered how enzymes produce molecular hydrogen. The process involves two electrons being transferred to two hydrogen ions through proton-coupled electron transfer, a mechanism that could explain the production of hydrogen gas in other enzymes.
The Continuous Electron Beam Accelerator Facility (CEBAF) has completed a $338 million upgrade to triple its original energy design and is now ready to begin experiments. The accelerator will enable scientists to study the quark structure of matter with unprecedented precision.
Topological insulators exhibit unique properties, with electrons confined to quantum channels at the edge. Researchers have engineered these pathways, allowing for controlled conduction and potential applications in next-generation electronic devices. This work provides new insights into fundamental properties of topological edge states.
Researchers investigate electronic charges that form stripe patterns in lanthanum nickelate, discovering unexpected dynamics when using terahertz laser pulses to disrupt microscopic order. The study provides fundamental insights into the interactions between electrons and crystal lattice vibrations.
Researchers have created a molecule that harnesses the power of unpaired electrons to create permanent magnetism. The 'messenger electron' plays a crucial role in controlling the spins of these electrons, resulting in added strength and durability.
The study confirms years of theoretical work and shows attophysics is ready to tackle complex molecules. Researchers used extremely short laser pulses and sensitive detection to distinguish between electrons with minimal speed difference.
The CALET experiment has successfully measured the cosmic-ray electron spectrum up to 3 TeV, providing insight into the origin and acceleration of cosmic rays. The findings suggest the presence of nearby astrophysical sources, such as pulsars or dark matter annihilation.
Physicists have successfully demonstrated the observation of wave properties in massive particles at room temperature. This breakthrough allows for the study of quantum effects in particle collisions that were previously unobservable.
The study used 3D models to simulate electron emissions from photocathodes with flat and varied surface roughness. The results improved understanding of how smooth surfaces must be and over what spatial scales, aiding in the design of ultra-bright photon and electron sources.
Researchers have demonstrated that incoherent electrons can induce coherence in molecular systems through attachment, leading to the ejection of ions in a preferred direction. This breakthrough has significant implications for controlling chemical reactions using photons and understanding the dynamics of excited molecular negative ions.
Researchers at UC Riverside developed a photodetector that doubles its efficiency by combining two distinct materials, producing quantum mechanical processes. This breakthrough can revolutionize the way solar energy is collected.
Physicists at JILA have confirmed the leading results on electron roundness using a unique spinning molecule technique, measuring its symmetry to provide new insights into fundamental physics and potential fossils of ancient asymmetry. The method offers future potential for more sensitive searches and tests of natural constants.
Researchers have successfully modelled electrons under extreme temperatures and densities, providing new insights into fusion experiments and potentially leading to a clean source of energy. The study solves a decades-old problem in physics by accurately simulating the thermodynamic properties of interacting electrons.
The 12 GeV Upgrade Project has tripled CEBAF's original operating energy, enabling precise imaging of nuclei and searches for exotic new particles. This upgrades allows researchers to explore the fundamental building blocks of matter at a scale previously inaccessible.
Scientists have designed a new single-site catalyst that speeds up the rate of water oxidation, releasing protons and electrons that can be used to create hydrogen fuel. The catalyst improves upon previous designs, achieving a comparable rate to natural photosynthesis per catalytic site.
Scientists have successfully tracked an electron leaving the vicinity of an atom as it absorbs light, allowing for the classification of quantum mechanical behavior of electrons from different atoms. The breakthrough could eventually lead to controlling electrons' behavior inside matter and creating new states of matter.
Researchers at Virginia Commonwealth University have discovered a stable tri-anion particle, made of boron and beryllium and cyanogen, which could be used in aluminum ion batteries. The discovery was recognized as a VIP paper by Angewandte Chemie and has potential applications in various industries.
Researchers have theoretically proved the existence of a novel class of materials for use in spin-valley-tronics. The discovery could lead to advancements in implantable devices and systems, leveraging the properties of dielectric materials with two valleys.
Researchers studied electron beam interactions with furfural gas to establish benchmark evaluation of low-energy electron scattering cross-sections and energy loss estimates. The analysis provided valuable insights into the energy characteristics of furfural biogas, a promising candidate for alternative biofuels.
Researchers at HZDR develop a method to control the number of electrons fed into the process, achieving ideal conditions for improved beam quality. This leads to peak currents of up to 150 kiloamperes, exceeding modern large-scale research accelerators.
Experiments at Argonne National Laboratory reveal stable energy states and collective spin in lead-208 nuclei. This challenges the assumption that spherical nuclei do not spin.
A team of Russian and Chinese scientists has developed a model explaining the nature of high-energy cosmic rays in our Galaxy, focusing on Fermi bubbles. They propose that giant shock fronts can re-accelerate protons to energies exceeding 1015 eV, producing the observed CR spectrum above the 'knee'.
The ISS-CREAM mission will study cosmic rays at energies above 1 billion electron volts, shedding light on their origins and properties. The experiment aims to measure the highest-energy particles yet detected in space, providing unparalleled insights into the interstellar neighborhood.
The team achieved an unprecedented wavelength and demonstrated the potential to capture slow-motion video of electrons in atoms and molecules with attosecond light pulses. This breakthrough has significant implications for improving the efficiency of solar panels by understanding photosynthesis.
Researchers at Brookhaven National Laboratory have discovered a new behavior by electrons in high-temperature superconductors, challenging a cornerstone of condensed matter physics. The symmetry-breaking flow of electrons persists up to room temperature and across the range of chemical compositions examined.
Scientists use electron pulses to create and manipulate nanoscale magnetic excitations that can store data, confirming dynamic understandings provided by theory. Tailored electron pulses can swiftly write, erase or switch topologically protected magnetic textures such as skyrmions.
Proton movement in ceramic fuel cells follows polaron model, allowing for increased conductivity. The discovery sheds new light on material choice for sustainable energy and hydrogen storage systems.
Researchers at Chalmers University of Technology have successfully identified and decelerated runaway electrons in a fusion reactor. This breakthrough could lead to better methods for controlling these high-energy electrons and paving the way for a functional fusion reactor.
Griffith University researchers used Australia's fastest camera to measure the time it takes for molecules to break apart, achieving a record-breaking 15 millionth of a billionth of a second. This breakthrough could help design new molecules for materials science and drug discovery.
An international team of physicists has monitored electron scattering behavior in a non-conducting material in real-time. The study reveals that electrons oscillate and collide with atoms within the material, causing energy loss, which could benefit radiotherapy.
Weyl semimetals are predicted to enable ultrafast electronics due to their unique properties. Researchers at MIPT have successfully described the behavior of surface states in these materials using topological field theory.
Researchers investigate how wall materials and structures impact secondary electron emission, which can affect plasma confinement and efficiency. They find that lithium oxide linings release more secondary electrons than other materials, highlighting the need to account for reactivity in fusion models.
Researchers at PPPL have discovered a source of fast magnetic reconnection in plasma, which could lead to more accurate predictions of damaging space weather and improved fusion experiments. The finding shows how electron pressure accelerates the process, balancing electric current and preventing halting the reconnection process.
The CEBAF accelerator has successfully delivered upgrade-energy electron beams into two of its experimental areas, Halls B and C. The upgrades mark progress toward the final DOE approval step for project completion.