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arXiv · 1805.11403

Long-term monitoring of the internal energy distribution of isolated cluster systems

Christian Breitenfeldt·Klaus Blaum·Sebastian George·Jürgen Göck·Gregorio Guzmán-Ramírez·Jonas Karthein·Thomas Kolling·Michael Lange·Sebastian Menk·Christian Meyer·Jennifer Mohrbach·Gereon Niedner-Schatteburg·Dirk Schwalm·Lutz Schweikhard·Andreas Wolf
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Abstract

A method is presented to monitor the internal energy distribution of cluster anions via delayed electron detachment by pulsed photoexcitation and demonstrated on Co$_4{}^-$ in an electrostatic ion beam trap. In cryogenic operation, we calibrate the detachment delay to internal energy. By laser frequency scans, at room temperature, we reconstruct the time-dependent internal energy distribution of the clusters. The mean energies of ensembles from a cold and a hot ion source both approach thermal equilibrium. Our data yield a radiative emission law and the absorptivity of the cluster for thermal radiation.

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Christian Breitenfeldt, Klaus Blaum, Sebastian George, Jürgen Göck, Gregorio Guzmán-Ramírez, Jonas Karthein, Thomas Kolling, Michael Lange, Sebastian Menk, Christian Meyer, Jennifer Mohrbach, Gereon Niedner-Schatteburg, Dirk Schwalm, Lutz Schweikhard, Andreas Wolf. 2018-05-29. Long-term monitoring of the internal energy distribution of isolated cluster systems. https://doi.org/10.1103/physrevlett.120.253001

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