Multipole-moment effects in ion–molecule reactions at low temperatures: part I – ion-dipole enhancement of the rate coefficients of the He+ + NH3 and He+ + ND3 reactions at collisional energies Ecoll/kB near 0 K

• Published in: Physical chemistry chemical physics : PCCP Vol. 23; no. 38; pp. 21606 - 21622
• Main Authors: Zhelyazkova, Valentina, Martins, Fernanda B V, Agner, Josef A, Schmutz, Hansjürg, Merkt, Frédéric
• Format: Journal Article
• Language: English
• Published: Cambridge Royal Society of Chemistry 06.10.2021; The Royal Society of Chemistry
• Subjects: Ammonia; Astrochemistry; Chemistry; Coefficients; Curved beams; Dipoles; Electric fields; Energy resolution; Low temperature; Mathematical models; Multipoles; Rate constants; Rotational states

The energy dependence of the rates of the reactions between He+ and ammonia (NY3, Y = {H,D}), forming NY2+, Y and He as well as NY+, Y2 and He, and the corresponding product branching ratios have been measured at low collision energies Ecoll between 0 and kB·40 K using a recently developed merged-be...