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Most energetic cosmic-ray electrons and positrons ever observed
Electrons Positrons Earth
2024/12/10
Scientists have recently identified electrons and positrons with the highest energies ever recorded on Earth. They provide evidence of cosmic processes emitting colossal amounts of energy, the origins...
Academy of Mathematics and Systems Science, CAS Colloquia & Seminars：Optimization models and approaches for strictly correlated electrons
严格 相关电子 优化模型 方法
2023/4/25
In electronic structure calculations, Kohn-Sham equations rank among the most widely adopted mathematical models. However, due to the deficiency of available approximations for exchange-correlation en...
Superconductors – metals in which electricity flows without resistance – hold promise as the defining material of the near future, according to physicist Brad Ramshaw, and are already used in medical ...
Electrons in metals try to behave like obedient motorists, but they end up more like bumper cars. They may be reckless drivers, but a new Cornell-led study confirms this chaos has a limit established ...
Scientists Get Better Numbers On What Happens When Electrons Get Wet（图）
Scientists Better Numbers Electrons Get Wet
2018/2/1
There’s a particular set of chemical reactions that governs many of the processes around us—everything from bridges corroding in water to your breakfast breaking down in your gut. One crucial part of ...
Where did those electrons go? Decades-old mystery solved（图）
those electrons Decades-old mystery solved
2017/11/23
The concept of “valence” – the ability of a particular atom to combine with other atoms by exchanging electrons – is one of the cornerstones of modern chemistry and solid-state physics.Valence control...
If they’re quick about it, “hot” electrons excited in a plasmonic metal can tunnel their way across a nanoscale gap to a neighboring metal. Rice University scientists said the cool part is what happen...
Quantum movement of electrons between atomic layers shows potential application of van der Waals materials for electronics and photonics（图）
Quantum movement electrons between atomic layers potential application van der Waals materials electronics photonics
2017/3/30
Common sense might dictate that for an object to move from one point to another, it must go through all the points on the path.“Imagine someone driving from Kansas City to Topeka on I-70 — it’s safe t...
Down the rabbit hole: how electrons travel through exotic new material
Down the rabbit hole electrons travel exotic new material
2016/3/21
Researchers at Princeton University have observed a bizarre behavior in a strange new crystal that could hold the key for future electronic technologies. Unlike most materials in which elec...
Moving electrons around loops with light:A quantum device based on geometry
Moving electrons loops with light quantum device geometry
2016/3/2
While a classical bit found in conventional electronics exists only in binary one or zero states, the more resourceful quantum bit, or ‘qubit,’ is represented by a vector, pointing to a simultaneous c...
Strongly interacting electrons in wacky oxide synchronize to work like the brain
Strongly interacting electrons wacky oxide synchronize work like the brain
2014/6/12
UNIVERSITY PARK, Pa. -- Current computing is based on binary logic -- zeroes and ones -- also called Boolean computing, but a new type of computing architecture stores information in the frequencies a...
HOUSTON – (Jan. 30, 2014) – Plasmonic nanoparticles developed at Rice University are becoming known for their ability to turn light into heat, but how to use them to generate electricity is not nearly...
PEBSI - A Monte Carlo simulator for bremsstrahlung arising from electrons colliding with thin solid-state targets
Monte Carlo simulation polarized electrons bremsstrahlung polarization target-thickness effects hard x-ray
2012/5/31
We present a Monte Carlo code dedicated to the simulation of bremsstrahlung arising in collisions of polarized electrons with thin target foils. The program consists of an electron transport algorithm...
Propagation of gamma rays and production of free electrons in air
Propagation of gamma rays production of free electrons Plasma Physics
2012/4/20
A new concept of remote detection of concealed radioactive materials has been recently proposed \cite{Gr.Nusin.2010}-\cite{NusinSprangle}. It is based on the breakdown in air at the focal point of a h...
Comment on "Head-on collision of electron acoustic solitary waves in a plasma with nonextensive hot electrons"
Comment Head-on collision of electron acoustic solitary waves nonextensive hot electrons Space Physics
2012/4/20
In a recent paper "Head-on collision of electron acoustic solitary waves in a plasma with nonextensive hot electrons" [Astrophys. Space Sci. 338, 271-278 (2012)] Eslami, Mottaghizadeh and Pakzad deal ...