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- W2023222055 abstract "Optical emission in the 3000–5000 Å range was observed as a result of low-energy (3–8 eVCM) ion–molecule reactions of C+ ions with H2 and D2 molecules. Most of the emission is due to (A 1Π→X 1Σ+) transitions of CH+ and CD+, which were each studied with 6 Å and 20 Å FWHM optical resolution. Rotational lines of much higher J were observed than are present in spectra from conventional CH+ light sources. The observed spectra were simulated on a computer, taking into account the strong dependence of the electronic transition moment on the internuclear distance, as given by ab initio calculations. Relative band oscillator strengths fv′v″(J) were calculated for each rotational line J and were found to depend strongly on J as result of centrifugal stretching. These calculations were done using the R centroid approximation as well as the exact band oscillator strength formula. From the spectrum simulations, accurate rotational and vibrational population distributions were derived. A simple model is proposed which explains the isotope effect on the rotational distributions and gives directly the distribution of impact parameters leading to reaction." @default.
- W2023222055 created "2016-06-24" @default.
- W2023222055 creator A5002702490 @default.
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- W2023222055 date "1979-12-01" @default.
- W2023222055 modified "2023-10-16" @default.
- W2023222055 title "Chemiluminescent ion–molecule reactions: Rotational–vibrational population distributions of CH+(<i>A</i> 1Π) and CD+(<i>A</i> 1Π) from C++H2 and C++D2 collisions" @default.
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- W2023222055 doi "https://doi.org/10.1063/1.438230" @default.
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