First analysis of the B1Σ+ (v=1) Rydberg state in the lesser-abundant 12C17O isotopologue on the basis of the 1 – v’’ progression of the Ångström band system.
| dc.contributor.author | Hakalla, Rafał | |
| dc.contributor.author | Szajna, Wojciech | |
| dc.contributor.author | Zachwieja, Mirosław | |
| dc.date.accessioned | 2014-11-19T10:18:25Z | |
| dc.date.available | 2014-11-19T10:18:25Z | |
| dc.date.issued | 2014-02 | |
| dc.description.abstract | So far unobserved in the 12C17O isotopologue, the 1-υ″ progression of the Ångström (B1σ+-A1Π) band system was recorded under high resolution in the 17,200-22,950cm-1 spectral region as an emission spectrum using high-accuracy dispersive optical spectroscopy. The 12C17O molecules were formed and excited in two steps in a stainless steel hollow-cathode lamp with two anodes. The emission from the discharge was observed with a plane-grating spectrograph and recorded by a photomultiplier tube.In the studied region, the full rotational structure of the 1-1 and 1-5 bands of the B-A system was observed, in total 114 spectral emission lines up to J″=21. All those lines were precisely measured with an estimated accuracy of about 0.0030cm-1, and rotationally analyzed. As a result, many molecular constants were determined for the B1σ+ and A1Π states in the 12C17O isotopologue. In this paper we have also presented the results of calculations concerning RKR turning points, Franck-Condon factors, relative intensities, and r-centroids for the Ångström band system in the 12C17O molecule. We have also determined the value of the δG1/2 vibrational quantum, the isotope shifts, as well as the main, isotopically invariant parameters of the B1σ+ Rydberg state in the CO molecule within the Born-Oppenheimer approximation.For the A1Π, υ=5 state, considerable irregularities of the rotational structure have been observed and analyzed in detail. Suspected candidates responsible for these perturbations have been identified. The B1σ+, υ=1 state has been thoroughly analyzed in terms of possible perturbations and it emerged to be completely regular in the 12C17O molecule up to the observed maximum J value. © 2014 Elsevier Ltd. | pl_PL.UTF-8 |
| dc.identifier.citation | J. Quant. Spectrosc. Radiat. Transf., 2014, 140, 7–17 | pl_PL.UTF-8 |
| dc.identifier.issn | 00224073 | |
| dc.identifier.uri | http://repozytorium.ur.edu.pl/handle/item/720 | |
| dc.language.iso | eng | pl_PL.UTF-8 |
| dc.publisher | Elsevier (Journal of Quantitative Spectroscopy & Radiative Transfer) | pl_PL.UTF-8 |
| dc.subject | High resolution molecular spectroscopy | pl_PL.UTF-8 |
| dc.subject | carbon monoxide | |
| dc.subject | Ångström system | |
| dc.subject | B1σ+ Rydberg state | |
| dc.subject | Perturbations in CO | |
| dc.subject | ||
| dc.subject | Rare 12C17O isotopologue | |
| dc.title | First analysis of the B1Σ+ (v=1) Rydberg state in the lesser-abundant 12C17O isotopologue on the basis of the 1 – v’’ progression of the Ångström band system. | pl_PL.UTF-8 |
| dc.type | article | pl_PL.UTF-8 |