Title :
Using an intense bismuth ion beam for the accumulation of a weighable mass of atoms
Author :
Schlegel, Christian ; Ratschko, Dirk ; Scholz, Frank ; Gläser, Michael
Author_Institution :
Phys. Tech. Bundesanstalt, Braunschweig, Germany
fDate :
4/1/2005 12:00:00 AM
Abstract :
At the Physikalisch-Technische Bundesanstalt, an experiment for the direct measurement of the atomic mass unit is underway by accumulating ions from an ion beam up to a weighable mass. Until now, an intense bismuth ion beam of ≈5 mA can be extracted out of a cold or hot reflex discharge ion source (CHORDIS). Different arrangements of the beamline ensuring a high transmission will be discussed. Finally, suitable geometries of an ion collector are shown based on SIMION-3D simulations.
Keywords :
atomic mass; bismuth; electrostatic devices; ion beams; ion optics; ion sources; mass measurement; CHORDIS; Physikalisch Technische Bundesanstalt; SIMION-3D simulations; atom weighable mass; atomic mass unit; beamline; bismuth ion beam; direct measurement; electrostatic devices; heavy ion beams; ion collector; ion optic; ion sources; Atomic beams; Atomic measurements; Bismuth; Current measurement; Fault location; Ion beams; Ion sources; Ovens; Plasma confinement; Plasma density; Electrostatic devices; heavy ion beams; ion optic; ion sources;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2004.843425
