Bound energy levels at the n = 2 dissociation threshold in HD

Year: 2002

Authors: Pielage Th.G.P., De Lange A., Brandi F., Ubachs W.

Autors Affiliation: Department of Physics and Astronomy, Laser Centre, Vrije Universiteit, De Boelelaan 1081, 1081 HV Amsterdam, Netherlands

Abstract: Level energies of g symmetry states lying just below the n = 2 dissociation threshold have been determined in a XUV + IR multi-step laser excitation experiment in HD, with an absolute accuracy of the excitation energy of 0.015 cm(-1). Intermediate B(1)Sigma(u)(+) energy levels have been calibrated by measuring transition frequencies in the U B(1)Sigma(u)(+)-X(1)Sigma(g)(+)(16, 0) Lyman band with an accuracy of 0.007 cm(-1). It is shown that v = 3 is the highest bound vibrational level in the shallow I\'(1) Pi(g). outer well potential in HD, and that only two rotational levels exist.

Journal/Review: CHEMICAL PHYSICS LETTERS

Volume: 366 (5-6)      Pages from: 583  to: 587

More Information: Foundation for Fundamental Research on Matter, FOM. Foundation for Fundamental Research on Matter, FOM. – The authors acknowledge the Netherlands Foundation for Fundamental Research of Matter (FOM) for financial support.
KeyWords: MOLECULAR-HYDROGEN; LASER SPECTROSCOPY; LIMIT; H-2; STATE; D-2; NM
DOI: 10.1016/S0009-2614(02)01617-2

Citations: 11
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