Abstract book - Prof. Per Jensen, Ph.D. - Bergische Universität ...

154 Poster session, H41First analysis of the 1 - v'' progression of the Ångström system in therare 12 C 17 O isotopic moleculeR. Hakalla 1 , W. Szajna 2 , M. Zachwieja 3 , I. Piotrowska 4 , M. Ostrowska-Kopeć 5 ,P. Kolek 6 , and R. Kępa 71 Atomic and Molecular Physics Laboratory, Institutute of Physics, University ofRzeszów, ul. Rejtana 16A, Rzeszów, POLAND, hakalla@univ.rzeszow.pl;2 szajna@univ.rzeszow.pl; 3 zachwiej@univ.rzeszow.pl; 4 ipiotrowska@if.univ.rzeszow.pl;5 mostrow@univ.rzeszow.pl; 6 pkolek@univ.rzeszow.pl; 7 rkepa@univ.rzeszow.plHakalla R.Szajna W.Zachwieja M.Piotrowska I.Ostrowska-Kopec M.Kolek P.Kepa R.So far unobserved in the very rare 13 C 17 O isotopic molecule the 1 – v’’ progression ofthe Ångström (B 1 Σ + -A 1 Π) bands system has been registered as a high resolutionemission spectra using a using a high accuracy dispersive optical spectroscopy.The 13 C 17 O isotopoloques were formed and excited in the water-cooled hollow-cathodelamp with two anodes. The emission from the discharge was observed with a planegrating spectrograph and recorded by a photomultiplier tube. The obtained bands wereprecisely measured and rotationally analyzed. The merged molecular constants and theprincipal equilibrium constants for the B 1 Σ + state were calculated for the first time in therare 13 C 17 O molecule. The isotopic dependence of the B e and ω e constants werediscussed.Numerous rotational perturbations observed in the A 1 Π state in 13 C 17 O molecule havebeen identified and analyzed in detail. The suspected candidates responsible for theseirregularities were indicated by means of a graph of the rovibronic levels of theneighboring states based on the estimated term value.Fig. 1: Rotational structure of the first time analyzed 1-1 band of the B 1 Σ +- A 1 Π systemin emission spectrum of the rare 13 C 17 O isotopologue. Part of the less intense 1-1 bandof the Ångström system in the 13 C 16 O and for the first time recorded in 13 C 17 O the 0-3band of the Herzberg (C 1 Σ +- A 1 Π) system are pointed at the bottom of the Figure. Thedotted lines indicate the tips of the relatively very strong Th calibration lines.