Durable emission of positronium negative ions from Na- and K-coated W(100) surfaces

Development of Energy-Tunable Positronium Beams Employing the Photodetachment of Positronium Negative Ions

Recent progress on the development of an energy-tunable positronium beam is reviewed. We describe experimental results for the efficient emission of positronium negative ions from alkali-metal coated tungsten surfaces. The ions generated using this technique have been accelerated by an electric field and photodetached in order to produce positronium beams with a hitherto unrealized energy range...

Electron Emission from Surfaces Induced by Slow Ions and Atoms

Kinetic electron emission from Al surfaces by slow ions

M. Minniti,1 M. Commisso,1 A. Sindona,1 E. Sicilia,2 A. Bonanno,1 P. Barone,1 R. A. Baragiola,3 and P. Riccardi1,* 1Laboratorio IIS, Università della Calabria and INFN-Gruppo Collegato di Cosenza-87036 Rende, Cosenza, Italy 2Dipartimeto di Chimica, Università della Calabria-87036 Rende, Cosenza, Italy 3Laboratory for Atomic and Surface Physics, Department of Engineering Physics, University of V...

Prevalence of Gram Negative Bacilli Isolated from the Equipment and Surfaces of Hospitals in Gorgan

Abstract Background and Objective: Nosocomial infection is one of the main factors of mortality in hospitals . One of the most important measures to control infection in hospitals  is sampling of equipment and  culturing the samples . This study aimed to investigate the prevalence of gram-negative bacilli obtained from the equipment of the hospital wards . Material...

Increase in the positronium emission yield from polycrystalline tungsten surfaces by sodium coating

a Department of Physics, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku, Tokyo 162-8601, Japan b Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan c Department of Physics, Northeastern University, Boston, MA 02115, USA d Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki 3...