The Overtone Spectrum of H232S near 13 200 cm−1

Local Mode Effects in the Absorption Spectrum of H2S between 10 780 and 11 330 cm−1

“…In Ref. (1), 30 bands were detected between 2000 and 11 150 cm −1 by Fourier transform spectroscopy associated with a multipass cell with optical path lengths up to 433 m. The increased sensitivity allowed by laser techniques such as frequency modulated diode laser spectroscopy (2) or intracavity laser absorption spectroscopy (ICLAS) (3)(4)(5) has given access to the visible range. The most excited transitions reported in Ref.…”

Local mode behavior in H2Te

“…IV B for the ͑30 ± ,0͒ ← ͑00 + ,0͒ bands is indeed consistent with a local mode behavior. IV C. A local mode behavior in the ͑30 ± ,0͒ states will be unambiguously established when energies for high-lying rotational levels, such as the J J,0 and J J,1 levels, become available for these two states [3][4][5][6][7][8] and when their clustering can be studied. The values of the parameters obtained, Table II T. Centrifugal distortion constants could not be constrained to be equal for both component states.…”

“…Extensive studies of the high-resolution spectra of several heavy triatomic molecules have been undertaken during the past few years [1][2][3][4][5][6][7][8][9][10][11][12] to investigate the possibility of a local mode behavior [13][14][15][16][17][18][19] in these molecules. Such a behavior is expected in XY 2 triatomic molecules with a heavy X atom and two light Y atoms and leads to unusual clusterings of their rotational levels or of their vibrational states.…”

“…A local mode behavior was indeed evidenced in hydrogen selenide ͑H 2 Se͒ which exhibits a clustering of its rotational levels in the ground vibrational state for high J values. [5][6][7][8] Hydrogen telluride ͑H 2 Te͒ is another candidate molecule for a local mode behavior. This second type of clustering was found for three different polyads of H 2 Se by Flaud et al 2 and Zhou et al 3,4 It was also evidenced for high-lying vibrational states of H 2 S by Flaud and co-workers.…”

Колебательно-вращательный анализ первой гексады сероводорода: полоса 4ν-=SUB=-2-=/SUB=- H_2-=SUP=-32-=/SUP=-S

“….. Из этого следует, что исследуемая полоса 4ν 2 является полосой A 1 -типа, и, следовательно, правила отбора для них описываются уравнением (1). Модель эффективного гамильтониана молекул XY 2 -типа (C 2v -симметрия) неоднократно обсуждалась в спектроскопической литературе [11][12][13]. По этой причине мы приводим здесь лишь основные формулы, необходимые для анализа спектра.…”