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Raman line shape studies of hydrogen cryosolutions. / Verzhbitskiy, I; Herrebout, W; Van der Veken, B; Kouzov, A.
в: Journal of Physics: Conference Series, Том 397, 2012, стр. 012058_1-4.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Raman line shape studies of hydrogen cryosolutions
AU - Verzhbitskiy, I
AU - Herrebout, W
AU - Van der Veken, B
AU - Kouzov, A
PY - 2012
Y1 - 2012
N2 - The pure rotational and rotation-vibration Raman transitions in H2 dissolved in liquid argon (LAr, T=87 K) and nitrogen (LN2, T=80 K) are studied at different hydrogen concentrations. Whereas the rotational S0(J) (J=0, 1) shapes of H2-LAr can be accurately fitted by Lorentzian profiles, the wings of the same H2-LN2 lines demonstrate a distinct sub-Lorentzian behaviour. The difference between these patterns is attributed to the change of the time scale of anisotropic interactions which perturb the rotational motion of H2. They should be slower for the H2-LN2 system in which the long-range quadrupole-quadrupole interactions develop. The latter dominate in the formation of the symmetric H2-LN2 S1(J) line shapes. By contrast, the same H2-LAr lines are mainly monitored by the vibrational broadening and their shapes are distinctly asymmetric.
AB - The pure rotational and rotation-vibration Raman transitions in H2 dissolved in liquid argon (LAr, T=87 K) and nitrogen (LN2, T=80 K) are studied at different hydrogen concentrations. Whereas the rotational S0(J) (J=0, 1) shapes of H2-LAr can be accurately fitted by Lorentzian profiles, the wings of the same H2-LN2 lines demonstrate a distinct sub-Lorentzian behaviour. The difference between these patterns is attributed to the change of the time scale of anisotropic interactions which perturb the rotational motion of H2. They should be slower for the H2-LN2 system in which the long-range quadrupole-quadrupole interactions develop. The latter dominate in the formation of the symmetric H2-LN2 S1(J) line shapes. By contrast, the same H2-LAr lines are mainly monitored by the vibrational broadening and their shapes are distinctly asymmetric.
U2 - 10.1088/1742-6596/397/1/012058
DO - 10.1088/1742-6596/397/1/012058
M3 - статья
VL - 397
SP - 012058_1-4
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
SN - 1742-6588
ER -
ID: 5419187