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Physical Chemistry Chemical Physics, 21, 1587-1596 (2019).

Radiative cooling of cationic carbon clusters, CN+, N = 8, 10, 13–16

F.-Q. Chen a, N. Kono b, R. Suzuki b, T. Furukawa b, H. Tanuma b, P. Ferrari c, T. Azuma d, J. Matsumoto e, H. Shiromaru e, V. Zhaunerchyk f and K. Hansen*fg
aSchool of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
bDepartment of Physics, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachiouji-shi, Tokyo 192-0397, Japan
cLaboratory of Solid State Physics and Magnetism, KU Leuven, 3001 Leuven, Belgium
dAtomic, Molecular & Optical Physics Laboratory, RIKEN, 2-1, Hirosawa, Wako-shi, Saitama 351-0198, Japan
eDepartment of Chemistry, Tokyo Metropolitan University, 1-1 Minamiosawa, Hachiouji-shi, Tokyo 192-0397, Japan
fDepartment of Physics, University of Gothenburg, 41296 Gothenburg, Sweden
gCenter for Joint Quantum Studies and Department of Physics, Tianjin University, Tianjin 300350, China. E-mail: KlavsHansen@tju.edu.cn

Received 12th October 2018 , Accepted 19th December 2018

First published on 21st December 2018


 

Abstract:

The radiative cooling of highly excited carbon cluster cations of sizes N = 8, 10, 13–16 has been studied in an electrostatic storage ring. The cooling rate constants vary with cluster size from a maximum at N = 8 of 2.6 × 104 s−1 and a minimum at N = 13 of 4.4 × 103 s−1. The high rates indicate that photon emission takes place from electronically excited ions, providing a strong stabilizing cooling of the molecules.

 

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