نتایج جستجو برای: field ion microscope
تعداد نتایج: 1015276 فیلتر نتایج به سال:
The activation energy for the surface self-diffusion of epitaxial erbium crystals grown on a tungsten field emitter tip has been examined. It was found to be strongly dependent both on the crystallographic orientation of the tip and the direction of electric field applied. The values of the activation energy, calculated from Arrhenius-type plots, and also field emission patterns of epitaxial Er...
The metallographically polished polycrystalline Sn surface was sputtered by 30 kV focused Ga ions at room temperature. The experiment was carried out using various FIB incidence angles (08, 158, 308, and 458) over a wide range of doses (10– 10 ions/cm). The surface morphology was carefully characterized under the optical microscope, scanning electron microscope (SEM) and atomic force microscope...
چکیده ندارد.
We have established a single cell irradiation system, which allows selected cells to be individually hit with defined number of heavy charged particles, using a collimated heavy-ion microbeam apparatus at JAERI-Takasaki. This system has been developed to study radiobiological processes in hit cells and bystander cells exposed to low dose and low dose-rate high-LET radiations, in ways that canno...
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