977 research outputs found
Compilation of Bibliography on Low Energy Electron Collision Cross Sections for Atoms and Molecules
R&D Status of Nuclear Emulsion For Directional Dark Matter Search
In this study, we are doing R&D for directional dark matter search with
nuclear emulsion. First of all, higher resolution nuclear emulsion with fine
silver halide crystals was developed in the production facility of emulsion at
Nagoya university, and we confirmed that it can detect the expected nuclear
recoil tracks. The readout of submicron tracks was required the new technology.
We developed the expansion technique, and could readout the signal by shape
analysis with optical microscopy. The two dimensional angular resolution is 36
degrees at the original track length of range from 150nm to 200nm with optical
microscopy. Finally we demonstrated by using recoiled nuclei induced by 14.8MeV
neutron, and confirmed the technique.Moreover, we developed the X-ray
microscope system with SPring-8 as final check with higher resolution of
selected candidate tracks with optical microscopy. The angular resolution was
improved from 31 degrees with optical microscopy to 17degrees with X-ray
microscopy at the track length of range from 150nm to 250nm. We are developing
the practical system and planning for start of the test running with prototype
detector.Comment: Proceedings of the 3rd International conference on Directional
Detection of Dark Matter (CYGNUS 2011), Aussois, France, 8-10 June 201
A novel method for unambiguous ion identification in mixed ion beams extracted from an EBIT
A novel technique to identify small fluxes of mixed highly charged ion beams
extracted from an Electron Beam Ion Trap (EBIT) is presented and practically
demonstrated. The method exploits projectile charge state dependent potential
emission of electrons as induced by ion impact on a metal surface to separate
ions with identical or very similar mass-to-charge ratio.Comment: 8 pages, 5 figure
Charge Transfer Cross Sections in Slow Impurity Ion Molecule Collisions Relevant to Fusion Edge Plasmas
Development of a Sputtered Ion Source for Measurements of Charge Transfer Cross Sections in Slow Metallic Ion - Atom and - Molecule Coil is ions Relevant to Fusion Edge Plasmas
Charge Transfer Cross Sections in Slow Impurity Ion-Molecule Collisions Relevant to Fusion Edge Plasmas
Charge Transfer Cross Sections in Slow Impurity Ion Molecule Collisions Relevant to Fusion Edge Plasmas
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