Experimental and theoretical studies of the nps 1Su+ and nppi 1Pu+ (n >= 4, N'=1-6) states of D2: energies, natural widths, absorption line intensities, and dynamics

Autor: Glass-Maujean, M., Jungen, Ch., Vasserot, A.M., Schmoranzer, H., Knie, A., Kübler, S., Ehresmann, A., Ubachs, W.
Přispěvatelé: Atoms, Molecules, Lasers, LaserLaB - Physics of Light
Jazyk: angličtina
Rok vydání: 2017
Zdroj: Journal of Molecular Spectroscopy, 338, 22-71. Academic Press Inc.
ISSN: 0022-2852
Popis: Over a thousand spectral lines in the photoexcitation spectrum of molecular deuterium (D2) to np 1Rþ u and 1Pþ u Rydberg levels (n P 4) were measured for rotational levels N0 ¼ 1–6 in the 117000–137000 cm1 spectral range by two different types of experiments at two synchrotron radiation sources: a vacuum ultraviolet (VUV) Fourier-transform (FT) spectrometer at SOLEIL, Paris and a 10 m-normalincidence monochromator (NIM) at BESSY II, Berlin. The experimental energies, the absorption cross sections, Einstein A-coefficients, and line widths are compared with ab initio multi-channel quantum defect (MQDT) calculations for these levels. More than 350 R(0) or P(2) lines were assigned, some 280 R(1) or P (3) lines, some 270 R(2) or P(4) lines, over 100 R(3) or P(5) lines, over 90 R(4) lines, and 24 R(5) lines to extract information on the N0 ¼ 1–6 excited levels. Transition energies were determined up to excitation energies of 137000 cm1 above the ground state, thereby extending earlier work by various authors and considerably improving the spectral accuracy (
Databáze: OpenAIRE
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