Franck-Condon factors and observed band strength distribution in the vibrational structure of the Ag_2 D-X band system

Potential curves for the X_1Σ_g^+ and D_1Σ_u^+ states of three diatomic silver isotopomers, ^(107)Ag_2, ^(107)Ag^(109)Ag and ^(109)Ag_2, were determined from the best available molecular constants by the Rydberg-Klein-Rees method. From these potentials, Franck-Condon factors and band-origin wave numbers were computed, and the reliability of the obtained values was verified by comparison with the observed band strength distribution and the measured band origin positions in a previously recorded D-X spectrum. The ratios of the Franck-Condon factors to those of corresponding isotopic bands were found to be very close to unity, revealing only a very small isotopic effect on the Franck Condon factors of Ag_2 D-X bands. The isotopic shifts of the calculated band origins agree well with previously measured displacements of band heads

Franck–Condon factors and observed band strength distribution in the vibrational structure of the Ag2 D-X band system

TPotential curves for the X1Sg+ and D1Su+ states of three diatomic silver isotopomers, 107Ag2, 107Ag109Ag and 109Ag2, were determined from the best available molecular constants by the Rydberg–Klein–Rees method. From these potentials, Franck–Condon factors and band-origin wavenumbers were computed, and the reliability of the obtained values was verified by comparison with the observed band strength distribution and the measured band origin po¬sitions in a previously recorded D-X spectrum. The ratios of the Franck–Con¬don factors to those of corresponding isotopic bands were found to be very close to unity, revealing only a very small isotopic effect on the Franck–Condon factors of Ag2 D-X bands. The isotopic shifts of the calculated band origins agree well with previously measured displacements of band heads

Electron and gas temperature difference in low current argon d.c. arc studied by power interruption technique

Atmospheric pure argon plasma without analyte water solution injection has been exposed to power interruption experiments in order to study the difference between electron and gas temperature. The arc plasma was studied in low currents range, between 3 and 10 A. Obtained temperature difference ranges from 3000 to 1500 K, from low to high current. A comparison with previous results, for argon plasma with water aerosol supply, have shown that introduction of water reduces temperature difference.Physical chemistry 2004 : 7th international conference on fundamental and applied aspects of physical chemistry; Belgrade (Serbia); 21-23 September 200

Rotation analysis of the B-X 0-1 bands of GaO

The 0-1 band of the B-2 Sigma(+)-X(2) Sigma(+) system of (GaO)-Ga-69-O-16 and (GaO)-Ga-71-O-16 has been measured and rotationally assigned. Principal molecular constants (T-01, B-0, B-1 , B-e , D-0, D-1 , alpha(e) ) have been obtained

Rotational analysis of the B-2 Sigma(+)-X-2 Sigma(+) bands of (CO+)-C-12-O-18

The emission spectrum of the B(2)Sigma(+) - X(2)Sigma(+) (First Negative) system of the molecular ion (CO+)-C-12-O-18 have been photographed at a resolution sufficient to observe the spin splitting of the lines with N GT 18. Four bands, 0-1, 0-3, 1-4 and 2-5, have been rotationally analyzed and the molecular constants of the B(2)Sigma(+), nu = 0, 1, 2 and X(2)Sigma(+), nu = 1, 3, 4, 5 have been obtained

Isotope effects on band intensities in the B I-2 (+)-X pound I-2 (+) pound system of GaO isotopomers

Relative intensities of eight vibronic bands, belonging to the Delta upsilon = -2 sequence of the B I-2 (+) pound -X I-2 (+) pound electronic transition of four GaO isotopomers have been measured and interpreted in terms of possible isotope effects on the parameters governing the band intensity. Obtained results showed very small isotope effect on the Franck-Condon factors and r-centroids and revealed that the observed intensity ratios of the corresponding isotope bands are controlled mainly by the isotope abundance of Ga-69 and Ga-71 in natural gallium.9th International Conference on Fundamental and Applied Aspects of Physical Chemistry, Sep 24-26, 2008, Belgrade, Serbi

New rotational analysis of the B-2 Sigma(+)-X-2 Sigma(+) bands in (GaO)-Ga-69-O-16 and (GaO)-Ga-71-O-16

In the emission spectrum of the (GaO)-O-16 molecule, the 0-0 and 1-0 bands of the B-X system have been rephotographed by means of conventional high-resolution spectroscopy. Clear resolution on the rotational structure near the band origins made it possible to perform reanalysis of the bands and derive new molecular constants characterizing (GaO)-Ga-69-O-16 and (GaO)-Ga-71-O-16 in the B(2)Sigma(+) and X(2)Sigma(+) states, (C) 1999 Academic Press

Vibrational structure of the B-X system of isotopic AgO molecules

Spectra of (AgO)-Ag-107-O-18 and (AgO)-Ag-107-O-16 molecules have been obtained in a low-pressure are in oxygen atmosphere, and recorded with medium dispersion. Vibrational assignments for the bands of B(2)Pi-X(2)Pi system were verified by the study of the oxygen isotope effect, and the vibrational constants were obtained for the states involved in transitions

Vibrational analysis of the beta system of (BO)-B-10-O-18

Ten bands of the system (B(2)Sigma(+)- X(2)Sigma(+)) of the (BO)-B-10-O-18 molecule have been observed for the first time. The spectrum was obtained by emission spectroscopy from a low-pressure arc, at medium dispersion, and vibrationally analyzed using isotope shift measurements. Vibrational analysis gave the constants omega(e) and omega(e)x(e) for both electronic states involved in the transitions

Franck–Condon factors and observed band strength distribution in the vibrational structure of the Ag2 D-X band system - Supplementary material

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