New high current accelerator facilities like proposed for the HIDIF driver require a beam with such a high brilliance, which can not be produced by a single pass rf-linac. The increase in brightness in such a driver linac is done by several funneling stages at low energies, in which two identically bunched ion beams are combined to a single beam with twice the frequency, current and brightness....

The stimulation effect that some beneficial agronomic qualities have exhibited in present-generation plants have also been observed due to ion implantation on plants. However, there is relatively little knowledge regarding the molecular mechanism of the stimulation effects of ion-beam implantation. In order to extend our current knowledge about the functional genes related to this stimulation e...

An ion beam cooler and buncher has been developed for the manipulation of radioactive ion beams. The gas-filled linear radiofrequency ion trap system is installed at the Penning trap mass spectrometer ISOLTRAP at ISOLDE/CERN. Its purpose is to accumulate the 60-keV continuous ISOLDE ion beam with high efficiency and to convert it into low-energy low-emittance ion pulses. The efficiency was foun...

The ion-hose (or fast-ion) instability sets limits on the allowable vacuum in a long-pulse, high current accelerator. Beam-induced ionization of the background gas leads to the formation of an ion channel which couples to the transverse motion of the beam. The instability is studied analytically and numerically for several ion frequency distributions. The effects of beam envelope oscillations o...

Experimental study of the BNL Electron Beam Test Stand (EBTS), which is a prototype of the Relativistic Hea@ Ion Collider (RHIC) Electron Beam Ion Source (EBIS), is currently underway. The basic physics and engineering aspects of a high current EBIS implemented in EBTS are outlined and construction of its main systems is presented. Efficient transmission of a 10 A electron beam through the ion ...

– Multilayers like those used in giant magnetoresistive spin-valves can be improved if better layer thickness uniformity, lower contamination levels, reduced interfacial roughness and less interlayer mixing can be achieved. Atomistic simulations have revealed that optimization of the energy of the depositing atoms and the application of very low energy inert gas ion assistance reduce both inter...

TM , using focused ion beam technology has been characterized. To date, most microfabrication in this material has used UV lithography and UV lasers, with minimum feature size of around 10µm determined by the grain structure, though there has been some recent work using high energy proton irradiation. Focused ion beam technology offers two potential advantages: features are etched directly with...

We outline some of the possible applications of nanotechnology to modern molecular biology and discuss several technologies that can be used to make nanoscale confining environments (channels or post arrays) for long polymers such as DNA. A particular emphasis is placed on making large arrays using nonelectron beam lithography methods. We then discuss how focused ion beam (FIB) milling can be u...