Sentences with phrase «with ion beams»

Ordinary «bulk» silicon with high concentrations of hydrogen implanted in the crystal lattice showed some promise, but to «dope» silicon in this way meant bombarding it with ion beams, which damages it.

«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.

Not exact matches

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.

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.

After chemists at Livermore produced a rare isotope of the element americium, they shipped it to their Russian colleagues, who beamed calcium ions at it with the accelerator.

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.

Researchers there smashed together beams of protons with beams of lead ions, producing showers of subatomic particles that flew away in all directions at high speed.

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.

The beam passed through a chamber where a laser knocked the extra electrons off of about 7 % of the ions, leaving a mix of hydrogen and negatively charged hydrogen ions to react with each other farther down the tube.

Indeed, when the team collided a beam of nickel - 58 ions with a target made of a natural mixture of nickel isotopes at the National Heavy Ion Accelerator (GANIL) in Caen, France, the researchers managed to spot just two fleeting nickel - 48 nuclei.

A water sample is placed inside the cylinder where it interacts with zinc ions, and a laser light is beamed into the object and onto the sample through a small hole, Yakovlev explains.

Although researchers are trying to drill such crystals with beams of ions, none have succeeded yet.

After the initial nine - week part of the run, RHIC physicists will begin a series of experiments they've never done before — collisions of polarized protons in one beam with a beam of heavier ions (first gold, for about five weeks, then a shorter two - week run with aluminum).

The scientists aimed beams of heavy ions at targets of certain elements to produce nuclei with 75 neutrons and 55, 57, 59 or 61 protons in a wide range of spin states.

With this gain, researchers can produce laser - accelerated ion beams at the rate needed for treating patients, reducing the potential treatment time to several minutes, thus saving costs and making the procedure easier for patients to endure.

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.

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.

Weiqing Zheng, a research associate at the Catalysis Center for Energy Innovation, and Liang Wang, an associate scientist in the Department of Mechanical Engineering, examine a sample in a lab with focused ion beam analysis.

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).

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 Effect of p53 Status of Tumor Cells on Radiosensitivity of Irradiated Tumors With Carbon - Ion Beams Compared With γ - Rays or Reactor Neutron Beams

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