Nascent rotational and vibrational product state distribution in the charge transfer reaction of N++CO→CO++N at near thermal energy

15 February 1986

journal article
conference paper
Published by AIP Publishing in The Journal of Chemical Physics

Vol. 84 (4) , 2180-2186
https://doi.org/10.1063/1.450379

Abstract

An improved ion beam apparatus is used to measure the nascent product state distribution in the charge transfer reaction N⁺+CO→CO⁺+N under single‐collision conditions at 0.16 eV energy. At this energy, the major vibrational channel in the CO⁺ products is v=1, in contrast to the predominant formation of v=0 at thermal energy. The relative vibrational distribution for the N⁺+CO reaction is (0.40±0.07)_v=0 : (0.57±0.04)_v=1 : (0.03±0.01)_v=2. In the v=0 channel, the rotational distribution under single‐collision conditions can be characterized by a Boltzmann distribution with a temperature of T=410±40 K. In the v=1 channel the rotational distribution is highly excited and non‐Boltzmann. The lower rotational states approximate a very high temperature of 2000 K. For high rotational quantum numbers (K>23), the rotational temperature is about T=810±20 K. The dramatic differences in the rotational distributions are clear evidence that these two vibrational channels are formed by different reaction mechanisms, most likely a direct reaction for v=0, and an intimate collision for v=1.

Keywords

This publication has 18 references indexed in Scilit:

Product vibrational state distributions of thermal energy charge transfer reactions determined by laser-induced fluorescence: N++CO→CO+(v=0–2)+N
The Journal of Chemical Physics, 1985
Nascent vibrational and rotational distributions from the charge transfer reaction Ar++CO → CO++Ar at near thermal energy
The Journal of Chemical Physics, 1985
Laser-induced fluorescence measurement of nascent vibrational and rotational product state distributions in the charge transfer of Ar++N2→Ar+N+2 (v=0,1) at 0.2 eV
The Journal of Chemical Physics, 1984
Energy disposal in the thermal and near-thermal energy charge exchange reactions: N+(3P)+CO(X1Σ+) → N(4S)+CO+(X 2Σ) and N+(3P)+CO(X 1Σ+) → C(3P)+NO+(X 1Σ)
The Journal of Chemical Physics, 1984
Single collision ion–molecule reactions at thermal energy: Rotational and vibrational distributions from N++CO→N+CO+
The Journal of Chemical Physics, 1983
Energy partitionning in charge transfer reactions at thermal energies
International Journal of Mass Spectrometry and Ion Physics, 1983
The effects of collision energy and ion vibrational excitation on proton and charge transfer in H2++N2, CO, O2
The Journal of Chemical Physics, 1982
Laser induced fluorescence studies of the charge transfer reactions of N2+ with Ar and N2
The Journal of Chemical Physics, 1982
Charge-transfer reaction ${Ar}^{+}$ + $N_{2}$ ⇄ $N_{2}^{+}$ + Ar at thermal energies
Physical Review A, 1981
Charge transfer of ${Ar}^{+}$ + $N_{2}$ ⇄ $N_{2}^{+}$ + Ar at near thermal energies
Physical Review A, 1981