Dissociative recombination measurements of SH+ with cold electrons

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

Becker, A.^1 ; Domesle, C.^1 ; Geppert, W.D.^2 ; Grieser, M.^1 ; Krantz, C.^1 ; Repnow, R.^1 ; Savin, D.W.^3 ; Schwalm, D.^1,4 ; Wolf, A.^1 ; Yang, B.^1,5 ; Novotný, O.^1,3

Max Planck Institute for Nuclear Physics, Heidelberg

D-69117, Germany^1

Department of Physics, Stockholm University, AlbaNova, Stockholm

SE-10691, Sweden^2

Columbia Astrophysics Laboratory, Columbia University, New York

NY

10027, United States^3

Faculty of Physics, Weizmann Institute of Science, Rehovot

76100, Israel^4

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou

730000, China^5

关键词: Analysis method;    Branching ratio;    Dissociative recombinations;    Low energy electrons;    Measurements of;    Plasma temperature;    Product excitation;    Rate coefficients;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/7/072067/pdf
DOI  :  10.1088/1742-6596/635/7/072067

来源: IOP

【 摘 要 】

We have experimentally investigated dissociative recombination of SH+with low-energy electrons. The merged-beams rate coefficient was measured at the TSR ion storage ring in Heidelberg, Germany. From these data the cross section was extracted and used to generate a plasma rate coefficient for plasma temperatures down to 10 K, which are relevant for astrochemical models. Furthermore, we have determined branching ratios of product excitation states utilizing a novel analysis method for imaging data.