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

Volume

54

Issue

2

fYear

2005

fDate

4/1/2005 12:00:00 AM

Firstpage

860

Lastpage

863

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;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2004.843425

Filename

1408306