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Journal Articles Physical Review A : Atomic, molecular, and optical physics [1990-2015] Year : 2015

Fast radiative cooling of anthracene: Dependence on internal energy

S. Martin
J. Bernard
R. Brédy
B. Concina
Lin Chen

Abstract

Fast radiative cooling of anthracene cations (C14H10)+ is studied with a compact electrostatic storage device, the Mini-Ring. The time evolution of the internal energy distribution of the stored ions is probed in a time range from 3 to 7 ms using laser-induced dissociation with 3.49-eV photons. The population decay rate due to radiative emission is measured to vary from 25 to 450s–1 as a function of the excitation energy in the range from 6 to 7.4 eV. After corrections of the infrared emission effect via vibrational transitions, the fluorescence emission rate due to electronic transitions from thermally excited electronic states is estimated and compared with a statistical molecular approach. In the considered internal energy range, the radiative cooling process is found to be dominated by the electronic transition, in good agreement with our previous work [S. Martin et al., Phys. Rev. Lett. 110, 063003 (2013)] focused on a narrower energy range.
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hal-01673975 , version 1 (12-02-2021)

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S. Martin, M. Ji, J. Bernard, R. Brédy, B. Concina, et al.. Fast radiative cooling of anthracene: Dependence on internal energy. Physical Review A : Atomic, molecular, and optical physics [1990-2015], 2015, 92 (5), ⟨10.1103/PhysRevA.92.053425⟩. ⟨hal-01673975⟩
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