Setting-up a Super-SIMS at DREAMS


Setting-up a Super-SIMS at DREAMS

Rugel, G.; Akhmadaliev, S.; Merchel, S.; Pavetich, S.; Renno, A.; Ziegenrücker, R.

At the Helmholtz-Zentrum Dresden-Rossendorf a new AMS (accelerator mass spectrometry) facility, DREsden AMS (DREAMS), with a 6-MV tandem accelerator has been successfully installed [1]. The range of applications will be broaden by setting up a Super-SIMS (SIMS = Secondary ion mass spectrometry) as an ultrasensitive analytical method for the determination of stable elements and isotopes. A commercial SIMS (from CAMECA) is connected to the accelerator and the high-energy setup of DREAMS, which will be additionally equipped with a time-of-flight detector system. The spatial resolution (x,y: ∼ 3μm; z: ∼ 5nm) of the SIMS will be kept as the SIMS is utilized as the negative ion source for the accelerator-based mass spectrometry. By the complete destruction of molecules detection limits some orders of magnitude better than for traditional dynamic SIMS are expected, i.e. ∼10-9-10-12, see e.g. [2]. The focus of applications will be geological samples in the framework of resource technology research.
Ref.: [1] S.\ Akhmadaliev et al., NIMB 294 (2013) 5. [2] C. Maden, Dissertation. ETH Zürich 2003.

Keywords: AMS; SIMS; sensitive analytical method

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Publ.-Id: 18407