Articles tagged with Electron Scattering
A team of researchers developed a microwave Rayleigh scattering diagnostic system to measure electron density in microscale explosive plasma. The system provides a rapid and non-intrusive approach for time-resolved diagnostics, overcoming limitations of conventional optical diagnostics and charge-probe techniques.
Researchers unveiled a technique to build ultra-clean 2D heterostructures using muscovite crystals, eliminating microscopic residues that disrupt electronic device performance. This method enables precise stacking of atomic layers, leading to new properties and potential breakthroughs in quantum computing and nanoelectronics.
Researchers discovered a maximum amount of electrical resistance that can occur due to electron collisions, offering insights into what causes resistivity at the microscopic level. The study found that when interactions between atoms become too strong, the resistivity caused by collisions eventually stops rising and saturates.
A team from Tokyo Metropolitan University successfully detects laser-assisted electron scattering using circularly polarized light, shedding light on atomic scale helicity and its impact on electron-matter interaction. The signal agrees with theory, but further work is needed to improve detection efficiency and accuracy.
Researchers at A1 Collaboration successfully produced hydrogen-6 in an electron scattering experiment, challenging current understanding of multi-nucleon interactions. The measurement revealed a stronger interaction between neutrons within the nucleus than expected, indicating a lower ground-state energy for ⁶H.
Scientists detected a 'wisp' precipitation with peak intensity inside the South Atlantic Anomaly, a region of weaker geomagnetic field and higher energetic particle flux. Ground-based VLF transmitter in Australia scatters electrons into this 'wisp', which is characterized by its peak intensity outside the anomaly.
A team of researchers successfully demonstrated nonlinear Compton scattering using a multi-petawatt laser, producing ultra-bright gamma rays. The achievement offers new insights into high-energy electron-photon interactions without traditional particle accelerators.
Researchers have developed a new imaging method for neutral atomic beam microscopes that can improve image resolution without significantly increasing measurement time. The new method uses magnetic spin precession to encode the position of beam particles, which interact with the sample.
A new microscopy method, Tempo STEM, significantly reduces radiation required by 'shutting off' the beam at peak efficiency. This approach eliminates excess damaging irradiation and avoids sample transformation or destruction.
A German-Chinese team at Goethe University Frankfurt has successfully visualized the temporal evolution of electron waves using the Kapitza-Dirac effect. The researchers measured the time-dependent interaction between free electrons and ultrashort laser pulses, opening up exciting applications in quantum physics.
The MOLLER experiment has been granted Critical Decision-3A, allowing it to begin procurement of key components and make a precise measurement of the electron's weak charge, which will compare to the Standard Model's prediction.
Researchers from the University of Manchester have discovered that graphene displays a remarkably strong response to magnetic fields, reaching above 100% in standard permanent magnets. This is a record magnetoresistivity among all known materials, attributed to the presence of Dirac fermions in high-mobility graphene.
Scientists have identified a dozen new materials with high carrier mobility in 2D semiconductors, which could revolutionize electronic device capabilities. The discoveries were made using quantum-mechanical calculations and are an exception to the conventional wisdom that finding such materials is extremely challenging.
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.
Achenbach, a renowned experimental physicist, will lead Jefferson Lab's Experimental Hall B, utilizing the world's most powerful accelerator to advance nuclear physics research. He aims to upgrade CEBAF and explore new experiments, including positron beams, to expand knowledge on matter and the universe.
Researchers from the University of Groningen developed a new formula that classifies metals into a simple systematic manner. The formula, which describes the temperature-dependent resistivity response, reveals a surprising similarity among previously categorized 'strange' metals.
Tiny molybdenum diselenide crystals have been found to exhibit ultrafast overtone signals due to phonon-mediated intervalley scattering processes. The study uses pump-probe spectroscopy and first-principles calculations to uncover the underlying physics.
Scientists from A*STAR and Fudan University found that placing 2D materials on substrates with bulged morphologies enhances carrier mobility by two orders, paving the way for competitive performance in field-effect transistors and thermoelectric devices. The discovery overcomes the intrinsic carrier mobility limit of the material.
Researchers at Indiana University and the University of Tennessee have developed a one-dimensional helium model system, which enables the creation of smaller and faster microchips. The new system is designed to explore the behavior of particles in a confined space, allowing for the study of previously unexplored physics.
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.
Researchers from UC Riverside developed a revolutionary imaging technology that compresses light into a nanometer-sized spot, allowing for unprecedented 6-nanometer color imaging of nanomaterials. This advance improves the study of unique properties and potential applications in electronics and other fields.
Scientists have discovered a new process to break bulk metal into atoms for sustainable catalyst production. The method uses magnetron sputtering to achieve record-breaking rates of atom dispersal, enabling the fabrication of valuable catalyst materials. This breakthrough has significant implications for industries reliant on catalysts.
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 directly observe hydrogen bonds in water for the first time, revealing effects that could explain water's strange properties and inform life on Earth. The study uses SLAC's MeV-UED to detect subtle molecular movements, providing a new window into understanding water's role in chemical and biological processes.
Researchers create transistors with an ultra-thin metal gate grown as part of the semiconductor crystal, eliminating oxidation scattering. This design improves device performance in high-frequency applications, quantum computing, and qubit applications.
Researchers at DESY create a table-top electron camera that captures the inner, ultrafast dynamics of matter by shooting short bunches of electrons at a sample. The system uses Terahertz radiation for pulse compression and is validated with the investigation of a silicon sample.
Researchers at Graz University of Technology have demonstrated the absorption of energy from laser light by free electrons in a liquid for the first time. This breakthrough opens new doors for ultra-fast electron microscopy, crucial for investigating smallest objects at fastest time scales.
The MOLLER experiment has received new grants totaling $9 million to support its precision measurement of the electron's weak charge. The grants come from the National Science Foundation and Canadian Foundation for Innovation, with matching awards from Research Manitoba, enabling higher-statistics results.
Researchers at the Max Born Institute developed a novel laser-driven X-ray source generating femtosecond copper K° pulses with unprecedented flux of 10^12 photons per second. This breakthrough enables investigating ultrafast structure changes in condensed matter by time-resolved X-ray scattering.
A new microscopy technique allows direct observation of droplet nucleation, enabling precise mathematical descriptions of the process. The technique improves contrast and resolution, revealing a different relationship between site density and nearest-neighbor function.
A team of researchers led by Nagoya University has discovered that killer electrons, resulting from the pulsating aurora, could be involved in ozone destruction. The high-energy electrons are believed to cause damage when they penetrate satellites, and their presence in the middle atmosphere is associated with the pulsating aurora.
Researchers at Tohoku University have successfully amplified 3D graphene's electrical properties by controlling its curvature. The study found that the motion of electrons on the 3D curvature enhances electron scattering, leading to unique electrical properties.
Researchers found that repulsion between electrons is suddenly counteracted by an additional attractive force, enabling counterintuitive effects. This phenomenon could help understand unconventional types of superconductivity and explain divergences that pose a challenge for research.
Researchers at MIT and University of Waterloo developed a high-power, portable terahertz quantum cascade laser that can generate powerful sensing and imaging capabilities. The device can be used for pinpointing skin cancer, detecting hidden explosives, and analyzing gases, drugs, and products.
A new study reveals the precise energies at which secondary electrons produce certain biomolecule fragments when living cells are irradiated with heavy ions. The research could lead to more effective cancer therapies by understanding how biomolecules such as DNA are damaged by ionising radiation.
A team of researchers has precisely recorded the dependence of resonant magnetic scattering intensity on x-ray intensity using a ferromagnetic domain sample. They found that the loss in scattered x-ray intensity is due to transient demagnetization, not stimulated emission. This clarification has important ramifications for future singl...
Electrons in Planckian metals exhibit high-temperature superconductivity due to their desire for social distancing. By adjusting the ratio between kinetic energy and interaction energy, researchers created a model that captures the system's behavior down to absolute zero.
Researchers have simultaneously captured the movements of electrons and nuclei in a molecule after it was excited with light, revealing both sides of the story in a single experiment. This marks the first time this has been done with ultrafast electron diffraction.
Researchers have seen the initial step in light-driven chemical reactions, where a molecule's electron cloud balloons out before atomic nuclei respond. This direct observation paves the way for studying chemical bonds forming and breaking in real-time.
Scientists observed a surprising phenomenon where electrons were sometimes ejected from nuclei in two-thirds of cases, and sometimes reflected back. The findings provide a new approach for testing quantum mechanical theories of Compton scattering.
Researchers from OIST create cheaper and user-friendly cryo-electron microscope to visualize biomolecules. The microscope uses low-energy electrons, which scatter more with lighter elements, providing a new way to image specimens.
Researchers have recorded how electrons interact with atomic vibrations in solids, capturing the processes that cause electrical resistance and superconductivity. The study enables visualization of dynamic properties of quantum materials, shedding light on high-temperature superconductivity and other phenomena.
Physicists have produced a new value for the proton's radius in an experiment conducted at Thomas Jefferson National Accelerator Facility, measuring 0.831 fm, smaller than previous results and in agreement with recent muonic atomic spectroscopy results. The new method used electron scattering and novel techniques to improve precision.
Scientists have identified an unusual electron scattering phenomenon in hybrid systems of Bose-Einstein condensates and 2D electron gases. This discovery opens up new possibilities for designing high-temperature superconductors by exploiting the unique interactions between electrons and Bogoliubov quanta.
A team of scientists has developed a method to study ultrafast spin-flip scattering rates in ferromagnetic Nickel and nonmagnetic copper using X-ray emission spectroscopy. As temperature increases, ferromagnetic nickel shows a decrease in emissions due to increased electron-phonon interactions.
Skoltech researchers developed a new method to generate intense monoenergetic X and gamma-ray radiation using Nonlinear Compton Scattering. The invention uses carefully tuned laser pulses to remove parasitic broadening, significantly increasing the number of generated photons.
New materials that conduct electricity are of great interest to physicists and materials scientists. Researchers have discovered a type of semimetal, niobium arsenide, which has about three times the conductivity of copper at room temperature.
High-pressure induced long-range charge order competing with superconductivity has been found in a high-temperature cuprate superconductor. The study provides new insights into the behavior of correlated electrons and mechanisms yielding to high-temperature superconductivity.
Researchers have made the first direct observation of electron scattering in auroras, revealing a previously unknown mechanism behind the colorful displays. The discovery was made using a specialized sensor on the ERG satellite and confirms that chorus waves are capable of exciting electrons to create pulsating auroras.
Scientists developed a new technique to precisely measure the temperature and behavior of two-dimensional materials, enabling the design of smaller and faster microprocessors. They used scanning transmission electron microscopy combined with spectroscopy to measure the temperature at the atomic level.
A research group at the University of Tokyo has quantified the impacts of three electron-scattering mechanisms on silicon carbide (SiC) power semiconductor devices. The team discovered that suppressing electron scattering can reduce resistance under the SiC interface by two-thirds, which is expected to lower energy consumption in elect...
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.
Low-energy electrons affect insulators in electronic systems and cause radiation damage in human and biological tissue. Researchers have devised a technique called the aerosol overlayer method to measure electron movement, separating core and shell interactions.
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.
Scientists have discovered a new way to study the atomic structure of materials, revealing the existence of 'polarons' that affect the flow of current. The ultrafast electron diffraction technique captures subtle lattice distortions, showing that electrons and atoms move cooperatively, driving deformations in the material's lattice.
Researchers at Brookhaven National Laboratory have found that static charge stripes coexist with superconductivity in a cuprate material. This discovery suggests that the electrons forming the static stripes may separate from the free-moving electron pairs required for superconductivity.
Researchers have directly observed negative refraction for electrons passing across a boundary in graphene, mimicking light behavior. This finding could lead to the development of new types of electron switches and enable new experimental probes, such as on-chip electron microscopes.
Researchers discovered that ultra-relativistic electrons are scattered into the atmosphere by electromagnetic ion cyclotron waves, while relativistic particles remain intact. This finding resolves a long-standing debate on electron loss mechanisms in the Van Allen Radiation Belts.
A new study uses electron scavenging to mimic radiation damage in a material called trifluoroacetamide (TFAA), triggering selective reactions and creating specific negative ions. The findings provide insights into the effects of low-energy electrons on biological tissues, potentially leading to better protection methods.
Researchers have developed a new method using gentle e-beams to study electron collisions with liquids, recording 2-dimensional spectra of molecules and measuring electronic excitation. This approach has shown promising results in evaluating quantum theoretical methods and may help identify alternatives to the greenhouse gas SF6.