The electron beam technique in carbon monoxide: Rotational transition probabilities |
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| Affiliation: | 1. Charles University in Prague, Faculty of Mathematics and Physics, Department of Chemical Physics and Optics, Ke Karlovu 3, Prague 2 CZ-12116, Czech Republic;2. Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, Prague 6 CZ-16610, Czech Republic;1. Université Grenoble Alpes, CNRS, LIPhy, 38000 Grenoble, France;2. V. E. Zuev Institute of Atmospheric Optics SB RAS, av. 1, Akademician Zuev square, 634055 Tomsk, Russian Federation;3. Laboratory of Quantum Mechanics of Molecules and Radiative Processes, Tomsk State University, 36 Lenin Avenue, 634050 Tomsk, Russian Federation |
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| Abstract: | The electron beam fluorescence technique was developed to measure the rotational level population in the ground state of a carbon monoxide molecule. The data on rotational transition probabilities under ionization–excitation of CO (X1Σ+) into the CO+ (B2Σ+) state by high energy electrons are presented, which noticeably differ from those predicted by the dipole excitation model. A flow in a free jet was used to obtain the experimental data in a low temperature rotationally equilibrium gas target. The probability matrix is represented in a compact form corresponding to the sudden approximation model. |
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