Polarized electrons are electrons in which spins have a "preferred" orientation or are preferentially oriented in a specific direction. The realization of these electrons has notable implications for physics research, as ...
Researchers from the National Institute of Standards and Technology (NIST) and KLA Corporation, a provider of inspection and measurement systems for the semiconductor and related industries, have improved the accuracy of ...
Optics & Photonics
May 31, 2023
0
4
Using a high-speed "electron camera" at the Department of Energy's SLAC National Accelerator Laboratory and cutting-edge quantum simulations, scientists have directly imaged a photochemical "transition state," a specific ...
Analytical Chemistry
May 26, 2023
0
265
A team of scientists from the Paul Scherrer Institut, the University of Basel and DESY have demonstrated the first-ever realization of apochromatic X-ray focusing using a tailored combination of a refractive lens and a Fresnel ...
Optics & Photonics
May 16, 2023
0
27
Quantum advances rely on the production of nanoscale wires that are based on several state-of-the-art nanolithographic technologies, to develop wires via bottom-up synthesis. However, a critical challenge is to grow uniform ...
Permanent magnets, the kind found on refrigerators everywhere, exist because their constituent atoms behave as miniature magnets. They align and combine to form the larger magnet in a phenomenon called ferromagnetism. There ...
Nanophysics
Apr 12, 2023
0
200
Alloys that can return to their original structure after being deformed have a so-called shape memory. This phenomenon and the resulting forces are used in many mechanical actuating systems, for example in generators or hydraulic ...
Nanophysics
Mar 9, 2023
0
135
Astronomers and amateurs alike know the bigger the telescope, the more powerful the imaging capability. To keep the power but streamline one of the bulkier components, a Penn State-led research team created the first ultrathin, ...
Astronomy
Mar 3, 2023
6
53
Ice-cold electron beams simulated in research at the University of Strathclyde could pave the way to reducing X-ray free-electron lasers (X-FELs) to a fraction of their current size.
Optics & Photonics
Mar 1, 2023
0
66
A laser pulse surfing in the wake of an electron beam pulse could get upshifted from visible to extreme ultraviolet light, simulations done at the University of Michigan have shown.
General Physics
Feb 27, 2023
1
87
Cathode rays (also called an electron beam or e-beam) are streams of electrons observed in vacuum tubes, i.e. evacuated glass tubes that are equipped with at least two metal electrodes to which a voltage is applied, a cathode or negative electrode and an anode or positive electrode. They were discovered by German scientist Johann Hittorf in 1869 and in 1876 named by Eugen Goldstein kathodenstrahlen (cathode rays). Electrons were first discovered as the constituents of cathode rays. In 1897 British physicist J. J. Thompson showed the rays were composed of a previously unknown negatively charged particle, which was named electron.
This text uses material from Wikipedia, licensed under CC BY-SA
