Open AccessInfrared absorption of deuterium molecules at low temperature
Author(s) -
Jiangping Liu,
Jun Li,
Yuanqiong Liu,
Lei Hai-Le,
Jianjun Wu
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.023301
Subject(s) - deuterium , infrared , infrared spectroscopy , absorption (acoustics) , molecule , materials science , atomic physics , absorption spectroscopy , molecular physics , analytical chemistry (journal) , nuclear magnetic resonance , optics , physics , chemistry , composite material , quantum mechanics , chromatography
The vibration/rotation modes and the corresponding infrared spectra of deuterium molecules with the D2d/D2h structures are calculated using the coupled cluster singles and doubles method with the cc-PVTZ basis sets within the framework of the density function theory. The infrared (IR) absorption spectrum of liquid deuterium is experimentally measured in a home-made cryogenic target system by a home-made low-temperature infrared spectroscope. The experimental results show that the strongest IR absorption peak of liquid deuterium is related to the Q1(0)+S0(0) mode, which is in good agreement with the theoretical calculation.