Multi-slit triode ion-optical systems with spherical electrodes are of interest for formation of intense focused neutral beams for plasma heating. At present, two versions of focusing multi-slit triode ion optical system are developed. The first ion optical system forms the proton beam with 15 keV energy, 140 A current, and 30 ms duration. The second ion optical system is intended for heating n...

The paper presents a description of new Ion Backscattering Beam Line. Small-size electrostatic accelerator “Sokol” with a beam energy range of 0.2...2.0 MeV is used as an ion source. A detail of the Beam Line is using of magnetic spectrometer which allows to carry out precise (several nm) quantitative layer-by-layer non-destructive element analysis of solid composition and structure using Ion E...

The DIII–D fusion science research facility employs positive-ion based neutral beam ion sources for plasma heating and current drive experiments. Ion species produced inside the arc chamber of an ion source determine the composition of the neutral beams injected into the plasma and in turn affect the energy deposition along the cross section of the plasma. Arc chamber design and operation schem...

The low-energy Ar-ion milling method was used to prepare ultrathin specimens for transmission electron microscope observation. The samples were thinned initially by a usual focused ion beam technique or typical Ar-ion milling with a high energy of 2-10 keV and were thinned additionally by an Ar-ion beam with an energy less than 1 keV, typically 500-900 eV. This low-energy ion beam was scanned o...

A linac-ring collision scheme was considered in recent proposals of electron-gold colliders (eRHIC) and polarized-electron light-ion colliders (EPIC). The advantages of using an energy-recovered linac for the electron beam is that it avoids the limitation of beam-beam tune shift inherent in a storage ring, pertains good beam quality and easy manipulation of polarization. However, the interactio...

Cooling and acceleration of ions by lasers has gained increasing attention over the last years. The common interest is to further increase the luminosity of ion beams, either by shrinking the phase space occupied by the beam, or simply via increasing the number of particles. Recently, laser cooling has demonstrated ion beam crystallization as the ultimate reduction of the beam temperature. On t...

The introduction of Xenon (Xe) plasma focused ion beam (PFIB) columns in scanning single and dual beam tools are a significant step forward in the development of ion beam instrumentation for scientific and technological exploration. PFIB’s provide significant improvements in ion beam operating currents with as much as 20 times the beam current of conventional Gallium (Ga) Liquid Metal Ion sourc...

Mapping magnetic fields via heavy ion beam spectral imaging relies upon establishing a high quality ion beam, identifying beam emission at wavelengths favorable for imaging, and designing an appropriate imaging configuration. Identifying emission lines suitable for imaging is difficult due to intense, broadband radiation of the target reversed field pinch plasma. To compensate, we have worked t...

Me V oxygen ion implantation in GaAs/ AlGaAs has been shown to provide a simple and very promising technique for quantum well laser fabrication. A lOμm stripe single quantum well (SQW) graded-index separation confinement heterostructure (GRINSCH) laser made in this way has achieved high performance with high quantum differential efficiency, low threshold current and good electrical isolation ch...

Electron Cyclotron Resonance (ECR) ion sources are essential components of heavy-ion accelerators due to their ability to produce the wide range of ions required by these facilities. The ever-increasing intensity demands have led to remarkable performance improvements of ECR injector systems mainly due to advances in magnet technology as well as an improved understanding of the ECR ion source p...