Reactions of O? with D2 at temperatures below 300 K

30th International Conference on Photonic, Electronic, and Atomic Collisions

Plail, Radek^1 ; Tran, Thuy D.^1 ; Rouka, Štpán^1 ; Rednyk, Serhiy^1 ; Kovalenko, Artem^1 ; Jusko, Pavol^1 ; Mulin, Dmytro^1 ; Zymak, Illia^1 ; Dohnal, Petr^1 ; Glosík, Juraj^1

Charles University, Faculty of Mathematics and Physics, Department of Surface and Plasma Science, V Holeovikách 2, Prague

180 00, Czech Republic^1

关键词: Atom transfer;    Ion traps;    Radio frequencies;    Rate coefficients;    Reaction channels;    Reaction rate coefficients;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/875/2/012015/pdf
DOI  :  10.1088/1742-6596/875/2/012015

来源: IOP

【 摘 要 】

The reaction of O-anions with molecular deuterium D2has been studied experimentally using a cryogenic 22-pole radiofrequency ion trap. Two reaction channels were observed. In the associative detachment D2O and an electron are formed and for atom transfer formation OD-+ D was observed. The rate coefficients of the reactions have been determined at temperatures below 300 K. The reaction rate coefficient k1of the associative detachment increases with decreasing temperature from k1(300 K) = 0.5 × 10-9cm3s-1at 300 K up to k1(70 K) = 1.2 × 10-9cm3s-1at 70 K both with 30 % overall uncertainty.