Sentences with phrase «electron laser by»

Here, we demonstrate that MISC is feasible at an X-ray free electron laser by studying the reaction of M. tuberculosisß - lactamase microcrystals with ceftriaxone antibiotic solution.

Not exact matches

These machines use lasers — or, in some cases, high - power electron beams — to draw shapes in a layer of metal powder by melting the material.

Measurements of the energy spectrum of electrons emanating from solid materials irradiated by a picosecond laser

Deflection of MeV Electrons by Self - Generated Magnetic Fields in Intense Laser - Solid Interactions

Electrons thus accelerated could be wiggled by magnets to create a so - called free - electron laser (FEL), which generates exceptionally bright and brief flashes of x-rays that can illuminate short - lived chemical and biological phenomena.

A NEW kind of laser that powers up by freezing light in its tracks could lead to computers that run on photons, instead of electrons.

He's done so by precisely focusing infrared laser light to selectively ionize, or steal the electrons from, air molecules at the beam's focal point, generating a flash of bluish - white plasma.

The researchers direct a beam of electrons onto a thin, dielectric foil, where the electron wave is modulated by irradiation with an orthogonally oriented laser.

For the first time, they managed to control the shape of the laser pulse to keep an electron both free and bound to its nucleus, and were at the same time able to regulate the electronic structure of this atom dressed by the laser.

«This gives us the option of creating new atoms dressed by the field of the laser, with new electron energy levels,» explains Jean - Pierre Wolf.

«By applying an intensity of 100 trillion watts per cm2, we were able to go beyond the Death Valley threshold and trap the electron near its parent atom in a cycle of regular oscillations within the electric field of the laser,» Jean - Pierre Wolf says enthusiastically.

This dual state would make it possible to control the motion of the electrons exposed to the electric field of both the nucleus and the laser, and would let the physicists to create atoms with «new,» tunable by light, electronic structure.

«Superradiance of an ensemble of nuclei excited by a free electron laser.»

The research team headed by Prof. Jochen Küpper of the Hamburg Center for Free - Electron Laser Science (CFEL) choreographed a kind of molecular ballet in the X-ray beam.

By using this high - power laser, it is now possible to generate all of the high - energy quantum beams (electrons, ions, gamma ray, neutron, positron).

Arefiev co-authored the study, «Enhanced multi-MeV photon emission by a laser - driven electron beam in a self - generated magnetic field,» published May 2016 in the journal Physical Review Letters.

Because a laser works by forcing electrons to jump between energy states, better confinement translates to a more efficient laser — one that fits in your living room instead of a physics lab.

But if tunneling took time, the laser's direction would have rotated by the time the electron escaped, so the particle would be pushed in a different direction.

When energy is added to the material, either by a laser «pump» or as an electrical current, it kicks some of the electrons orbiting the molecules into higher energy states.

The machine developed by the Brookhaven team uses a laser pulse to give electrons in a sample material a «kick» of energy.

The researchers in Erlangen and Jena have now achieved this by focusing laser pulses onto a nanometre - sharp metal tip, causing the tip to emit electrons.

Using tunneling ionization and ultrashort laser pulses, scientists have been able to observe the structure of a molecule and the changes that take place within billionths of a billionth of a second when it is excited by an electron impact.

A new study by University of Illinois engineers found that in the transistor laser, a device for next - generation high - speed computing, the light and electrons spur one another on to faster switching speeds than any devices available.

Building on a 1981 proposal by three Russian theorists and more recent work that brought that proposal into the realm of possibility, the team first fired two lasers at hydrogen atoms inside a chamber, kicking off electrons at speeds and directions that depended on their underlying wave functions.

Depending on their size, so called near - fields (electromagnetic fields close to the particle surface) were induced by the laser pulses, resulting in a controlled directional emission of electrons.

The researchers observed this effect by using particle detectors to monitor the flight paths of electrons emitted from the near - fields of the nanospheres within the passage of the laser pulse.

Researchers simulated the environment found inside these planets by creating shock waves in plastic with an intense optical laser at the Matter in Extreme Conditions (MEC) instrument at SLAC National Accelerator Laboratory's X-ray free - electron laser, the Linac Coherent Light Source (LCLS).

After removing one of the atom's electrons, researchers trapped the atom using electric fields and cooled it to less than a thousandth of a degree above absolute zero -LRB--- 273.15 ° Celsius) by hitting it with laser light.

By 2016, Boeing is scheduled to transfer its free electron laser technology from Jefferson Laboratory and other participating labs, in order to demonstrate a 100 - kilowatt prototype that is compatible with operation on a ship.

By shooting lasers through tiny gas tubes, physicists could accelerate electrons and positrons continuously.

This idyll has now been heavily shaken up by a team of physicists led by Matthias Kling, the leader of the Ultrafast Nanophotonics group in the Department of Physics at Ludwig - Maximilians - Universitaet (LMU) in Munich, and various research institutions, including the Max Planck Institute of Quantum Optics (MPQ), the Institute of Photonics and Nanotechnologies (IFN - CNR) in Milan, the Institute of Physics at the University of Rostock, the Max Born Institute (MBI), the Center for Free - Electron Laser Science (CFEL) and the University of Hamburg.

The electrons were then carried along by the laser pulse and almost instantly smashed back into the neon nuclei.

This opens up new opportunities in the study of protein structures, as the team headed by DESY's Leading Scientist Henry Chapman from the Center for Free - Electron Laser Science reports in the Proceedings of the U.S. National Academy of Sciences (PNAS).

When both members of the pair became excited, one of them would normally fall to the lower rung before being struck by an incoming photon, producing no photon along the way and leaving too few excited electrons to make laser light.

Laser physicists at LMU Munich and the Max Planck Institute of Quantum Optics (MPQ) have now measured the duration of such a phenomenon — namely that of photoionization, in which an electron exits a helium atom after excitation by light — for the first time with zeptosecond precision.

The ejected electron was detected by the infrared laser pulse as soon as it left the atom in response to the excitation by XUV light.

In UEC, a sample of crystalline GeTe is bombarded with a femtosecond laser pulse, followed by a pulse of electrons.

These accelerators work by shooting pulses of intense laser light into plasma to create a wave rippling through the cloud of ionised gas, leaving a wake of electrons akin to those that form behind a speedboat in water.

The electrons at the center of the spirals are driven pretty vigorously by the laser's electric field.

Princeton University researchers have built a rice grain - sized laser powered by single electrons tunneling through artificial atoms known as quantum dots.

In a semiconductor, electrons can be excited by absorbing laser light.

They were partly inspired by studies on the confinement of electrons in tiny structures within semiconductors called quantum wells, quantum wires and quantum dots («How to build better lasers», New Scientist, 11 January).

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.

By irradiating oriented molecules with powerful laser pulses, the researchers were able to obtain high - harmonic spectra reflecting the state of a molecule's electron shell.

Electron ejection from multiple N2 orbitals, controlled by the molecule's orientation relative to a laser, produces attosecond light spectra that can reveal molecular dynamics.

Those electron bunches are actually initiated by rapid - fire laser pulses produced by an electron «gun.»

The data were collected using the Linac Coherent Light Source X-ray free electron laser, or XFEL, at the SLAC National Accelerator Laboratory — operated by Stanford University for the U.S. Department of Energy Office of Science.

A team of researchers from the University of Michigan has demonstrated the effects of radiation reaction by hitting electrons with an ultra-intense laser.

An initial laser pulse will trigger a reaction in the sample that is followed an instant later by an electron pulse to produce an image of that reaction.

Graphene heats inconsistently when illuminated by a laser, Jarillo - Herrero and his colleagues found: The material's electrons, which carry current, are heated by the light, but the lattice of carbon nuclei that forms graphene's backbone remains cool.