Breakdown curves of carbon-based molecules for astrochemistry

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

Chabot, M.^1 ; Béroff, K.^2 ; Gratier, P.^3 ; Jallat, A.^1 ; Wakelam, V.^4 ; Sanchez, J.P.^5 ; Aguirre, N.^5 ; Diaz-Tendero, S.^5 ; Alcami, M.^5 ; Martin, F.^5 ; Hervieux, P.A.^6

Institut de Physique Nucléaire d'Orsay, Université Paris Sud, CNRS, Orsay Cedex

F-91406, France^1

Institut des Sciences Moléculaires d'Orsay, Université Paris Sud, CNRS, Orsay Cedex

F-91405, France^2

Institut de Radioastronomie Millimétrique, Saint Martin d'Hères

F-38406, France^3

Laboratoire d'Astrophysique de Bordeaux, Université de Bordeaux, CNRS, Floirac

F-33270, France^4

Universidad Autónoma de Madrid, Cantoblanco, Madrid

E-28049, Spain^5

IPCMS, Université de Strasbourg, Strasbourg

67034, France^6

关键词: Astrochemistry;    Breakdown curves;    Energy dependent;    Excited molecules;    Fragmentation branching ratios;    Fragmentation measurements;    Identity cards;    Semi-empirical;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/3/032107/pdf
DOI  :  10.1088/1742-6596/635/3/032107

来源: IOP

【 摘 要 】

Breakdown curves (BDC), which are energy dependent fragmentation branching ratios, constitute a kind of "identity card" of an excited molecule or cluster. We developed a method for constructing semi-empirical BDC, based on fragmentation measurements and structural known quantities of the considered species. Calculations of BDC have been performed within the statistical M3C theory. We will present a comparison of the two methods for some species and discuss application of these results to astrochemistry.