Sentences with phrase «electron densities by»

«It was very satisfying to see such high resolution electron densities by the second day of our experiment, but to then also see such strong signals from the changes in the structure was even more exciting,»

Not exact matches

Between 150 and 350 kilometers above Earth's surface, the density of free - floating electrons should drop by a factor of two as they rejoin atoms, the researchers say.

Scientists have worked out the spatial distribution of electron and positron density in Ps as given by the solution of the Schroedinger equation.

The structure of RuO2 (110) and the mechanism for catalytic carbon monoxide oxidation on this surface were studied by low - energy electron diffraction, scanning tunneling microscopy, and density - functional calculations.

By being able to measure electron density with high accuracy in atmospheric pressure low - temperature plasma, it is no longer necessary to rely solely upon experience and trial and error.

Further, by being able to precisely measure electron density, it will now be possible to clarify through computer simulation the important behaviors of active ion species that play important roles in their interaction with living organisms and materials hazardous to the environment.

Last year, along with researchers led by Brookhaven / Columbia University School of Engineering physicist Simon Billinge, the team established the first firm link between the disappearance of the density wave within the pseudogap phase and the emergence, as stated by Davis, of «universally free - flowing electrons needed for unrestricted superconductivity» [see: https://www.bnl.gov/newsroom/news.php?a=11637].

«We are demonstrating that when the electrons are no longer hampered by the «frozen» density wave state, they become universally free to flow unimpeded,» Davis said.

Electrons traveling through such a narrow path — racing along in what are called charge - density waves — can be easily reversed by virtually any obstacle.

By appropriately decorating those graphene sheets with gold nanoparticles, the INRS - EMT team was able to increase significantly the density of electron - emitting sites, and thereby improve their FEE performance.

Researchers from The University of Manchester's Jodrell Bank Centre for Astrophysics have developed and demonstrated a process for continuous electron density measurement of the previously under - explored D region of the ionosphere — a part of the atmosphere that previously could only be sensitively probed by short - lived rocket - borne instruments.

As a result, we clarified that the influence of the ion mass appeared remarkably in a high - density plasma and that the detailed physical mechanism in which turbulence is suppressed through an effect caused by electron - ion collisions.

The study focuses on two perfectly reflecting model plates, separated by any non-zero density plasma, i.e. a charged gas which may contain electrons only or electrons and positrons.

«By modelling experimental synchrotron data and comparing it with density functional theory calculations, we revealed surprising information about the nature of the electron sharing between layers in these materials.»

The combination of the high electron density and potent electron interactions are not seen in other materials and the quantum regime enforced by the tight passageway, might here be engendering some new kind of electron transport.

Now, scientists from the research group of Nir Bar - Gill at the Hebrew University of Jerusalem's Racah Institute of Physics and Department of Applied Physics, in cooperation with Prof. Eyal Buks of the Technion — Israel Institute of Technology, have shown that ultra-high densities of NV centers can be obtained by a simple process of using electron beams to kick carbon atoms out of the lattice.

By adjusting various parameters — such as the density of conduction electrons in the material or the strength of the DC electric field — it is possible to tune the cutoff wavenumber and, consequently, the frequency of the resulting terahertz radiation.

Proton density after laser impact on a spherical solid density target: irradiated by an ultra-short, high intensity laser (not in picture) the intense electro - magnetic field rips electrons apart from their ions and creates a plasma.

A neutral oxygen vacancy, a place where an oxygen atom should appear in the lattice but is instead replaced by two electrons, is represented by the yellow shape, which depicts the charge density of those electrons.

Electron densities have been extensively monitored by means of the Mars Express radio science experiment (Pätzold et al. 2009).

They studied how this spontaneous voltage depends on the current direction, temperature, and the chemical composition (the level of doping by strontium, which controls the electron density).

Electron densities measured by radio - occultations (Pätzold et al. 2007) allow one to derive the overall structure of the ionosphere.

They were also able to measure the modulated electron density caused by the substitution.

Snapshots of electronic density change (electron wake) produced by H + moving in Cu with a kinetic energy of 81 keV along a [100] channel.

The quiet - time behavior of the ionospheric electron density peak height of the F2 region, hmF2, has been evaluated from average electron density profiles and analytically modeled by the Spherical Harmonic Analysis (SHA) technique following the same methodology as described by Altadill et al. (2009).

This feature is mainly a consequence of switching off the photo - detachment of negative ions, thus the negative ions created by attachment remain below 80 km at night and this results in electron density depletion.

A joint study carried out by the Finnish Meteorological Institute and the Sodankylä Geophysical Observatory of the University of Oulu has developed ionospheric electron density imaging techniques.

For example, if I attempt to do an a priori computation of the quantum structure of, say, a carbon atom, I might begin by solving a single electron model, treating the electron - electron interaction using the probability distribution from the single electron model to generate a spherically symmetric «density» of electrons around the nucleus, and then performing a self - consistent field theory iteration (resolving the single electron model for the new potential) until it converges.