Infrared-active vibron bands associated with rare gas atom dopants isolated in solid parahydrogen

• Опубліковано в: : Физика низких температур
• Дата: 2007
• Автори: Raston, P.L., Anderson, D.T.
• Формат: Стаття
• Мова: Англійська
• Опубліковано: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2007
• Теми: Quantum Crystals
• Онлайн доступ: https://nasplib.isofts.kiev.ua/handle/123456789/121780
• Назва журналу: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Цитувати: Infrared-active vibron bands associated with rare gas atom dopants isolated in solid parahydrogen / P.L. Raston, D.T. Anderson // Физика низких температур. — 2007. — Т. 33, № 6-7. — С. 653-660. — Бібліогр.: 44 назв. — англ.

We report high-resolution infrared absorption spectroscopic studies of the dopant-induced Q₁(0) vibron
 band in solid parahydrogen crystals doped with low concentrations of rare gas atoms. The frequency,
 lineshape, and integrated absorption coefficient for the rare gas atom-induced Q₁(0) vibron band are measured
 for Ne, Ar, Kr, and Xe. The observed lineshapes and peak maxima frequencies are sensitive to the H₂
 vibrational dependence of the dopant-H₂ isotropic intermolecular potential. Trends observed for Ar, Kr and
 Xe indicate the vibrational dependence is strong enough for Xe to trap the infrared-active vibron in its first
 solvation shell while for Ar the vibron remains delocalized. The Ne-induced feature displays a qualitatively
 different lineshape which is attributed to the weak intramolecular vibrational dependence of the Ne–H₂
 intermolecular potential relative to the H₂–H₂ interaction. The lineshapes of the Ar, Kr, and Xe dopant-induced
 Q₁(0) pure vibrational features agree well with recent first principles calculations.