Metal vapor target for precise studies of ion-atom collisions
- GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt (Germany)
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou, 730000 Gansu (China)
- Helmholtz-Institut Jena Fröbelstieg 3, 07743 Jena (Germany)
- ExtreMe Matter Institute EMMI and Research Division, GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt (Germany)
Although different ion-atom collisions have been studied in various contexts, precise values of cross-sections for many atomic processes were seldom obtained. One of the main uncertainties originates from the value of target densities. In this paper, we describe a unique method to measure a target density precisely with a combination of physical vapor deposition and inductively coupled plasma optical emission spectrometry. This method is preliminarily applied to a charge transfer cross-section measurement in collisions between highly charged ions and magnesium vapor. The final relative uncertainty of the target density is less than 2.5%. This enables the precise studies of atomic processes in ion-atom collisions, even though in the trial test the deduction of precise capture cross-sections was limited by other systematic errors.
- OSTI ID:
- 22308861
- Journal Information:
- Review of Scientific Instruments, Vol. 85, Issue 5; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0034-6748
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CROSS SECTIONS
DENSITY
ELECTRON BEAM TARGETS
EMISSION SPECTROSCOPY
ICP MASS SPECTROSCOPY
ION-ATOM COLLISIONS
MAGNESIUM
MULTICHARGED IONS
PHYSICAL VAPOR DEPOSITION
PLASMA