Berlin 2014 – scientific programme
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MS: Fachverband Massenspektrometrie
MS 4: Ion Storage Rings
MS 4.4: Talk
Tuesday, March 18, 2014, 15:00–15:15, DO24 1.205
Cryogenic microcalorimeter energy resolution measurements for multi-keV atoms and molecules. — •Oldřich Novotný1, Steffen Allgeier3, Lisa Gamer3, Daniel Hengstler3, Sebastian Kempf3, Claude Krantz2, Andreas Pabinger3, Christian Pies3, Daniel W. Savin1, Dirk Schwalm2,4, Christian Enss3, Andreas Fleischmann3, and Andreas Wolf2 — 1Columbia Astrophysics Laboratory, New York, USA — 2Max Planck Institute for Nuclear Physics, Heidelberg, Germany — 3Kirchhoff Institute for Physics, Heidelberg, Germany — 4Weizmann Institute of Science, Rehovot, Israel
We have experimentally investigated the kinetic energy resolution of an ∼ 10 mK magnetic microcalorimeter (MMC) detector for 12-150 keV atomic and molecular ion beams. The ion masses were varied from 1 amu (H+) to 58 amu (C3H6O+). The resulting FWHM energy resolutions were 0.5 keV for atomic ions and 1 keV for molecular ions. The measured energy resolutions were similar for the neutral particles of the corresponding ions. The high resolving power in energy, the charge independence, and the optional position sensitivity all demonstrate the expected versatility of the MMC detectors for use in various mass spectrometry techniques. As a next step we will implement the MMC detector for mass and position resolved fragment counting in the Cryogenic Storage Ring (CSR) at the Max Planck Institute for Nuclear Physics in Heidelberg. The storage energies of ∼ 300 keV will allow 1 amu mass resolution for stored ions of up to ∼ 150 amu (assuming a separation of 2 FWHMs between peaks).