Sentences with phrase «use ion beams»

The researchers used an ion beam to slice off thin sections from the samples, and they used electron microscopy techniques to image the samples and perform elemental analyses.

Most of the segments were sent to Eastman - Kodak in the US to take advantage of a new milling technique which uses an ion beam to produce an almost perfect surface.

Using ion beams allows medical professionals to calculate exactly where ions need to stop; with precise aiming, they can kill only the tumor cells and spare the vast majority of nearby healthy cells.

Not exact matches

To enable the spacecraft to remain charge - neutral, a «neutralizer» is used to inject electrons to exactly balance the positive ion charge in the exhaust beam.

Researchers have proposed a new way to detect radioactive material using two co-located laser beams that interact with elevated levels of oxygen ions near a gamma - ray emitting source.

Scientists might use these tractor beams to separate mixtures of atoms or ions, for example, reeling in one type but not another.

Using laser beams they cool the ion down until it hardly moves inside the cage.

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).

Petawatt lasers are used for study of basic science, generating such high - energy quantum beams as neutrons and ions, but only a few facilities in the world have Petawatt laser.

In nuclear medicine, ion beams — using protons and carbon ions — have been used clinically in the radiotherapy treatment of cancer tumours since the 1990s.

An ion thruster (or ion drive), one of several types of spacecraft propulsion, uses beams of ions - electrically charged atoms or molecules - for propulsion.

They use electric fields to accelerate a beam of positively charged xenon gas ions, which shoot out of the spacecraft at speeds of up to 90,000 mph.

They used a scanning electron microscope and focused ion beam to obtain thin - slice images of the membrane, which they analyzed with software, rebuilding the three - dimensional structure of the membranes to determine fuel cell longevity.

Those technologies include the «driver» used to crush the fuel capsule, such as lasers, heavy ion beams, or powerful pulses of electric current.

«We examined the samples with electron microscopy using thin layers cut out of the composite with ion beams,» explains Tobias Kraus, Division Head for Structure Formation at INM.

He first depicted its surface using SPM and then repeated the process 12 times, shaving away a 100 nanometer layer of the sample with a beam of oxygen ions before each step.

Two types of electric rockets are currently in use: the ion thruster, which generates thrust using a beam of positive xenon ions, and the Hall thruster, which uses xenon ions and electrons for propulsion.

The GFZ's Anja Schreiber prepared these slices using a focussed beam of charged atoms (ions) to ablate the surface.

Accompanying the beam extraction, the spatial flow distribution of the negative hydrogen ions was investigated by measuring the flow of negative hydrogen ions with the use of a compound - type electrostatic probe with four needle - type electrodes irradiated by laser pulse.

Specifically, they measured hydrogen and its isotope, deuterium (hydrogen with an extra neutron in its nucleus) with ion microprobes, which use a focused beam of ions to sputter ions from a small rock sample into a mass spectrometer.

When used at NIST to transmit laser light to trap ions (electrically charged atoms), the fibers reduce stray light and fluctuations in laser beam pointing and make it possible to transfer ultraviolet light between separate optical tables, the paper notes.

Chemical imaging involves the use of a laser or ion beam to analyse the sections of skin using a mass spectrometer.

Although future ADS systems will use protons beams and a heavy metal target to produce neutrons, Guinevere's neutron source — deuterium ions hitting a tritium target — is powerful enough to simulate how a bigger machine like Myrrha will behave, says Abderrahim.

Ideas abounded: using ion engines to ferry up the components of a moon base; beaming power to robotic rovers on the Martian moon Phobos; attaching high - power Hall effect thrusters to the International Space Station (ISS) and putting it on a Mars cycler orbit; preplacing chemical rocket boosters along an interplanetary trajectory in advance so astronauts could pick them up along the way; using exploration pods like those in 2001: A Space Odyssey rather than space suits; instead of sending astronauts to an asteroid, bringing a (very small) asteroid to astronauts at the space station.

Still, researchers must perform extensive research not only to increase the energy of the ions to reach even deep seated tumors but also to really control the beam well enough to be used routinely in a medical treatment.

The use of intermediate size nuclei is expected to result in intermediate energy density - not as high as in earlier runs colliding two beams of gold ions at the Relativistic Heavy Ion Collider (RHIC), but more than was produced by colliding a beam of gold ions with much lighter deuterons.

Nastasi is co-author of a widely used textbook, «Ion Beam Processing: Fundamentals and Applications,» and edits a handbook on ion beam materials analysIon Beam Processing: Fundamentals and Applications,» and edits a handbook on ion beam materials analysion beam materials analysis.

I am an experimentalist, and I use ultrahigh - resolution ion - and electron - microscopy techniques, including focused - ion - beam scanning - electron microscopy and transmission electron microscopy, to determine the composition and structure of these materials at scales ranging from millimeters down to the atomic.

Growing interest in research using beams of short - lived radioactive ions led to another reconfiguration of the facility, with the ORIC serving as a driver accelerator to produce radioactive ion species that were then injected into and accelerated by the 25 - MV tandem.

The homogenized fresh breast tumor samples have been represented for flow cytometric analysis using FACS calibur flow cytometer (Becton Dickinson, Sunnyvale, CA, USA) equipped with a compact air cooked low power 15 mwat argon ion laser beam (488nm), data analysis was conducted using DNA analysis program MODFIT (Topsham, USA).

To characterize the tissue architecture associated to dysfunctional states of the immune system in cancer settings, we make use of both confocal fluorescent microscopy and multiplexed secondary ion beam imaging.

An opportunity exists to work with the Surrey Ion Beam Centre as a Liaison Fellow in the application of ion beam analysis using RBS, PIXE and other complementary measuremenIon Beam Centre as a Liaison Fellow in the application of ion beam analysis using RBS, PIXE and other complementary measuremenion beam analysis using RBS, PIXE and other complementary measurements.

The Neutralized Drift Compression Experiment - II (NDCX - II) is an energy - efficient induction accelerator that will focus beams of ions using the technique of neutralized drift compression developed at Berkeley Lab.

The Center for Accelerator Mass Spectrometry uses unique and state - of - the - art instrumentation to perform ultrasensitive isotope ratio measurements and ion beam analysis

This sophisticated accelerator complex will use high - energy, precisely - tailored ion beams to mimic the conditions inside the core of stars and early phase of the universe.

The SKY experiment provided proof of concept in that they found the formation rate of aerosol increased in the presence of ions generated using a 580 MeV electron beam (Enghoff et al. 2011).

Additional features of the Wrist PDA with Palm OS include a 160 x 160 pixel grayscale LCD with touch screen and backlight, a stylus cleverly integrated into the watch buckle, one - handed navigation using the 3 - way Rocker switch and Back button, the ability to beam data to another Palm Powered device via the Infrared Port, USB HotSync support for Mac OS and Windows, and a lithium - ion rechargeable battery that lasts approximately 3 - 4 days based on conditions of use.