Laser absorption spectroscopy of the A1Σu+-X1Σg+(v′, v″) bands of Na2 |
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Authors: | Riyad N Ahmad-Bitar Ahmad S Al-Ayash |
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Institution: | Department of Physics, University of Jordan, Amman, Jordan |
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Abstract: | Laser absorption spectra of the band system A1Σu+-X1Σg+(v′,v″) of Na2 in the range between 16835 and 16960 cm?1 are analyzed. The spectra are free of first-order-Doppler broadening at low internal temperature. Rotational and vibrational assignments of 10 bands are reported. Rotational and vibrational levels, especially the (22, 1) band, are found to be perturbed by the b3Πu state. The band origins and line frequencies calculated from previously reported constants do not reproduce the observed values. The disagreement between the calculated and observed values is discussed. More accurate constants are needed to predict the line locations. |
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