Hannover 2010 – scientific programme

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MS: Fachverband Massenspektrometrie

MS 9: Ionenfallen und FT-IZR-MS, Moleküle, Cluster und Reaktionen

MS 9.3: Talk

Friday, March 12, 2010, 11:15–11:30, F 428

CTF: a new tool for molecular and cluster physics — •Sebastian Menk¹, Klaus Blaum¹, Florian Fellenberger¹, Michael Froese¹, Manfred Grieser¹, Oded Heber², Michael Lange¹, Felix Laux¹, Dimitry Orlov¹, Thomas Sieber¹, Michael Rappaport², Robert von Hahn¹, Jozef Varju¹, Andreas Wolf¹, and Daniel Zajfman² — ¹Max-Planck-Institut für Kernphysik, Saupfercheckweg 1,69117 Heidelberg — ²Weizmann Institut of Science, Rehovot, 76100, Israel

One major goal of constructing the electrostatic Cryogenic Trap for Fast ion beams (CTF) was the development of technology and methods for the construction of the Cryogenic Storage Ring (CSR) which is currently being built. Ions are trapped between two electrostatic mirror electrodes allowing the storage of up to 20 keV ion beams for over 5 minutes. The ability of reaching extremely low vacuum conditions with this kind of assembly has been verified by measuring storage lifetimes and neutral particle count rates of a trapped 7.1 keV N₂⁺ ion beam. A residual gas density of about 2000 cm⁻³ (8 · 10⁻¹⁴ mbar for same density at room temperature) and the low temperatures below 15 K also gave the opportunity to perform various measurements under previously unavailable conditions. A few highlights of the performed measurements including, for instance, radiative cooling measurements of hot aluminum cluster anions Al_n⁻ will be presented.