Open AccessInfrared absorption of liquid-hydrogen planar cryotargets
Author(s) -
Bi Peng,
Yuanqiong Liu,
Tang Yongjian,
Xinling Yang,
Lei Hai-Le
Publication year - 2010
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.59.7531
Subject(s) - infrared spectroscopy , infrared , materials science , hydrogen , absorption (acoustics) , vibration , spectroscopy , absorption spectroscopy , planar , harmonic , molecule , spectral line , analytical chemistry (journal) , atomic physics , optics , physics , chemistry , acoustics , quantum mechanics , computer graphics (images) , chromatography , computer science , composite material
Using a home-made cryotarget system and infrared spectroscopy system, we measure the infrared absorption spectra of liquid hydrogen at low temperaturs. It is found that the fundamental vibration frequency of hydrogen molecule is 4237.3 cm-1. As liquid hydrogen cools from 19.75 K down to 16.75 K, the infrared absorption is enhanced. The vibration frequency of hydrogen molecules is calculated on the basis of non-harmonic approximation in order to explain the experimental ones.