Erlangen 2018 – wissenschaftliches Programm
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MO: Fachverband Molekülphysik
MO 12: Cold Molecules and Reactions (joint session MO/A)
MO 12.3: Vortrag
Dienstag, 6. März 2018, 14:45–15:00, PA 2.150
Blackbody-Induced Radiative Dissociation of van der Waals Clusters at the Cryogenic Storage Ring — •Felix Nuesslein1, Klaus Blaum1, Sebastian George1, Jürgen Göck1, Florian Grussie1, Robert von Hahn1, Matthias Klein2, Thomas Kolling2, Holger Kreckel1, Michael Lembach2, Christian Meyer1, Preeti Manjari Mishra1, Gereon Niedner-Schatteburg2, Viviane Schmidt1, and Andreas Wolf1 — 1Max-Planck-Institut für Kernphysik, D-69117 Heidelberg — 2Technische Universität Kaiserslautern, D-67663 Kaiserslautern
Recently, blackbody-induced dissociation of van der Waals clusters was studied for (SF6)N− in a room temperature electrostatic ion beam trap [1]. However, the ground state stability of the various cluster sizes and the temperature-dependent dynamics of the infrared-active molecular clusters have not yet been investigated. For these, the Heidelberg electrostatic Cryogenic Storage Ring (CSR) provides ideal conditions. It was recently used to measure the rotational relaxation of infrared-active molecules in a ∼15 K effective radiation field [2]. Low residual gas density (<140 cm−3) enables storage of fast ion beams in the CSR for times up to hours [3]. Currently, we assemble a laser vaporization source to produce (SF6)N− and SF5+(SF6)N−1 clusters. We aim at studying their heating dynamics inside the CSR at various temperatures via the two main infrared bands of SF6 at 10.6 µm and 16 µm.
[1] I. Rahinov et al., Eur. Phys. J. D 70 (2016) 260.
[2] C. Meyer et al., Phys. Rev. Lett. 119 (2017) 023202.
[3] R. von Hahn et al., Rev. Sci. Instrum. 87 (2016) 063115.