Sentences with phrase «ion mass»

However, we do not yet understand the detailed physical mechanism of how the increase in ion mass is linked to performance improvement.

If influences brought about by differences in ion mass can be clarified theoretically, we can accurately predict confinement improvements that are observed in experiments.

When the team bombarded the fossils with charged particles and then analyzed the particles that were knocked from the surface (a technique called time - of - flight secondary ion mass spectrometry), they chemically identified the remnants of eumelanin, a pigment that typically lends a black or brown color to skin or feathers.

To determine the structural and chemical composition of the soft tissues Lindgren collected and see if the fossil sea turtle did have a dark colored shell, the researchers subjected the sample to a selection of high - resolution analytical techniques, including field emission gun scanning electron microscopy (FEG - SEM), transmission electron microscopy (TEM), in situ immunohistochemistry, time - of - flight secondary ion mass spectrometry (ToF - SIMS), and infrared (IR) microspectroscopy.

The Swedish - led ion mass analyser on Mars Express has been measuring the ion escape from Mars since 2004.

The researchers probed the melt inclusions using secondary ion mass spectroscopy.

As has been clarified above, a complete image of turbulence suppression in a plasma with large ion mass may be expressed schematically.

When ion mass is larger, instabilities are reduced and the zonal flow increases, and the loss of heat and particles in the plasma is suppressed.

«Clarifying the mechanism for suppressing turbulence through ion mass: Theoretical research develops significantly towards improved performance in fusion plasmas.»

Eichkorn, S., Wilhelm, S., Aufmhoff, H., Wohlfrom, K. H. & Arnold, F. Cosmic ray - induced aerosol - formation: first observational evidence from aircraft - based ion mass spectrometer measurements in the upper troposphere.

Utilizing secondary ion mass spectrometry and X-ray microscopy, the team was able to look at molecular interactions at different temperatures to see when the phase change occurs.

Using an instrument called a time - of - flight secondary ion mass spectrometer, scientists identified the molecular makeup of the fossil melanosomes to compare with modern melanosomes.

The study was conducted using a new technique called atom - probe tomography that, in conjunction with secondary ion mass spectrometry, permitted the scientists to accurately establish the age and thermal history of the zircon by determining the mass of individual atoms of lead in the sample.

These research results provide fundamental knowledge regarding the complete clarification of the «ion mass effect» which was an unsolved issue for many years in plasma physics and fusion research.

The international scientific team, led by author Charles W. Kosman, used an electron microprobe, an infrared spectrometer and a secondary ion mass spectrometer to analyze these diamonds.

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.

A time - of - flight secondary ion mass spectrometer (ToF - SIMS), which provides a very high spatial resolution down to the nanometre range, was used in this particular study.

The researchers analyzed five different samples at the Northeast National Ion Microprobe Facility — a state - of - the - art national facility housed at WHOI that utilizes secondary ion mass spectrometers.

Eschewing sole reliance on structural analysis, the team used two different types of chemical analyses: time - of - flight secondary ion mass spectrometry and infrared reflectance spectroscopy.

The device is small enough to fit in the palm of a hand, works with many scientific instruments including time - of - flight secondary ion mass spectrometers and scanning electron microscopes.

SALVI, small enough to fit in the palm of a hand, works with many scientific instruments including time - of - flight secondary ion mass spectrometers and scanning electron microscopes.

The problem was that not all of the steps were known and that one desirable instrument, secondary ion mass spectrometry (SIMS), couldn't be used to track the products formed.

«Our cell is vacuum compatible, so we can use it in vacuum surface instruments like time - of - flight secondary ion mass spectrometry (SIMS),» said Dr. Xiao - Ying Yu, a physical chemist who led the study.

In one sentence: Scientists at Pacific Northwest National Laboratory discovered transient species and reaction pathways in a common electrochemical system interface using liquid secondary ion mass spectrometry and a vacuum - compatible electrochemical microfluidic reactor.

The scanning force microscope (SFM) scans the surface with an ultra-fine tip, while the time - of - flight secondary ion mass spectrometer (ToF - SIMS) determines the material composition of the first surface mono - layer by «shooting» metallic ions at it.

A secondary ion mass spectrometry (SIMS) analysis done on the CVD - grown layer using this purified silane precursor showed 29Si concentration less than 0.006 percent, and 30Si less than 0.002 percent, while 28Si concentration was more than 99.992 percent.