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2 Optica Applicata

2 2006

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The 61Π u state of Na2 molecule

Grochola A., Kubkowska M. K., Jastrzębski W., Kowalczyk P.

Optica Applicata

2006

Vol. 36, nr 4

s. 469--473

Excitation spectra of sodium dimer were analysed within the range 34200–36400 cm–1. The experiment was done using polarisation labelling spectroscopy technique. In the spectral region under investigation we found several vibrational progressions belonging to a single band system having the ground state of Na2 as the lower state. The upper state was of 1Π u symmetry as indicated by the presence of Q lines in the spectrum and basing on theoretical calculations it was identified as the 61Π u (3s+4f ) state. The Dunham coefficients and potential curve characterising this state were deduced from the observed spectra.

Excited 1u(51P1) state of Cd2 and the dipole moment of the 1u(51P1)–X0g+ electronic transition

Grycuk T, Kloda T, Kubkowska M K, Kutner T

Optica Applicata

2006

Vol. 36, nr 4

s. 505--510

The satellite band of the 228.8 nm Cd line associated with the 1u(51P1)–X0g+ electronic transition in Cd2 is measured in absorption and used for probing and correcting the excited state potential by means of quantum simulations of the spectrum. Best theoretical potential curves available are employed as the initial input data and the spectrum calculated for a single molecule is compared with the experimental spectrum of the absolute absorption coefficient per atom pair. The method yields considerable correction of the upper state potential which, finally, reproduces the experimental spectrum quite well. The dipole transition moment function is roughly determined.