关于液态水中HDO的取向弛豫
On the orientational relaxation of HDO in liquid water.
作者信息
Rezus Y L A, Bakker H J
机构信息
Stichting voor Fundamenteel Onderzoek der Materie Institute for Atomic and Molecular Physics, Amsterdam, The Netherlands.
出版信息
J Chem Phys. 2005 Sep 15;123(11):114502. doi: 10.1063/1.2009729.
We use femtosecond mid-infrared pump-probe spectroscopy to study the orientational relaxation of HDO molecules dissolved in H2O. In order to obtain a reliable anisotropy decay we model the effects of heating and correct for these effects. We have measured the reorientation time constant of the OD vibration from 2430 to 2600 cm(-1), and observe a value of 2.5 ps that shows no variation over this frequency interval. Our results are discussed in the context of previous experiments that have been performed on the complementary system of HDO dissolved in D2O.
我们使用飞秒中红外泵浦-探测光谱技术来研究溶解在H₂O中的HDO分子的取向弛豫。为了获得可靠的各向异性衰减，我们对加热效应进行建模并校正这些效应。我们测量了OD振动在2430至2600 cm⁻¹范围内的重取向时间常数，观察到其值为2.5 ps，在该频率区间内没有变化。我们将在先前对溶解在D₂O中的HDO互补体系所进行的实验背景下讨论我们的结果。
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