Radiative cooling of hot Cn? and CnH? molecules

29th International Conference on Photonic, Electronic, and Atomic Collisions

Kaminska, M.^1,2 ; Nascimento, R.F.^1 ; Stockett, M.H.^1,3 ; Anderson, E.K.^1 ; Delaunay, R.^4 ; Vizcaino, V.^4 ; Rousseau, P.^4 ; Adoui, L.^4 ; Huber, B.A.^4 ; Thomas, R.D.^1 ; Gatchell, M.^1 ; Hansen, K.^3,5 ; Zettergren, H.^1 ; Schmidt, H.T.^1 ; Cederquist, H.^1

Department of Physics, Stockholm University, Alba Nova University Centre, Stockholm

SE-106 91, Sweden^1

Institute of Physics, Jan Kochanowski University, Kielce

25-369, Poland^2

Department of Physics and Astronomy, Aarhus University, Ny Munkegade, Aarhus C

DK 8000, Denmark^3

CIMAP, UMR 6252, CEA/CNRS/EINSCAEN, Universitéde Caen Basse-Normandie, bd Henri Becquerel, BP 5133, Caen Cedex 05

F-14070, France^4

Department of Physics, University of Gothenburg, Göteborg

SE-412 96, Sweden^5

关键词: Cooling rates;    Destruction rates;    Internal conversions;    Interstellar environment;    Radiative cooling;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/11/112124/pdf
DOI  :  10.1088/1742-6596/635/11/112124

来源: IOP

【 摘 要 】

We have measured the rates of neutrals produced from 10 keV Cn-or CnH-(n=2, 4, 6, 8, and 10) ion beams stored in one of DESIREE's 14 K storage rings. For n=4, 6, and 8 we observe marked differences between Cn-and CnH-cooling rates as inverse internal conversion [cf. S. Martin et al (2013) Phys. Rev. Lett. 110, 063003] processes are effective for the Cn-ions only. Knowledge of the cooling rates of these ions are important for estimates of their formation and destruction rates in cold interstellar environments.