Collisional excitation of the Comet-Tail system of CO+ [A2Πi-X2Σ+]

Lee, A.R.; Enos, C.S.; Brenton, A.G.

doi:10.1016/0022-2852(92)90246-k

Cited by 5 publications

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By contrast, only the upper electronic state A 2 Π i of the comet tail system is accessible in direct collisional excitation of CO + . 12 This latter observation is surprising in view of the fact that the potential energy curve for the X 2 Σ + state of CO + (ar r e = 1.115Å) is more closely aligned with the potential energy curve for the B 2 Σ + state (at r e = 1.169Å) than that for A 2 Π i (at r e = 1.244Å). The extra energy of excitation required to reach the B 2 Σ + state is the only reasonable explanation for its absence in the TES of CO + .…”

Section: Resultsmentioning

confidence: 98%

Excitation of CO+ and NO+ Electronic States Via Single-electron Capture by B2+ Ions

Lee

Leather

Brenton

1997

Rapid Commun. Mass Spectrom.

View full text Add to dashboard Cite

High-resolution translational energy loss spectrometry was performed to obtain the spectra for single-electron capture by 6 keV B 2 + ions in collision with CO and NO molecules, to complement a previous investigation involving O 2 and N 2 targets. The spectrum for CO consists of eight well defined peaks, three of which correspond to capture into the ground state of CO + [X 2 Σ + ] dominated by the 0-0 molecular transition. One intense peak and a subsidiary one are identified as capture into the first excited electronic state of CO + , responsible for subsequent emission of the comet-tail system CO + [A 2 Π i → X 2 Σ + ]. The B 2 Σ + state of CO + , the upper electronic state of the Baldet-Johnson [B 2 Σ + → A 2 Σ i ] and the first negative [B 2 Σ + → X 2 Σ + ] bands, is also accessed through two capture channels. The NO spectrum exhibits one intense narrow peak dominated by capture into the second triplet state of NO + [b 3 Π], together with subsidiary features which may involve capture into the ground X 1 Σ + and excited singlet (A 1 Π, A' 1 Σ + , W 1 ∆) and triplet (b 3 Π, a 3 Σ + , b' 3 Σ -) manifolds. The NO spectrum is complicated by energy overlap of relevant capture channels, which makes unambiguous identification difficult.

show abstract

Section: Resultsmentioning

confidence: 98%