%0 Journal Article
%T Terahertz and Raman spectra of L-threonine<br>苏氨酸的太赫兹及拉曼光谱研究
%A Wang Wei-Ning
%A <br>王卫宁
%J 物理学报
%D 2009
%I 
%X The THz absorption within the range of 0.2-2.8 THz(6.7-93.2 cm~(-1))and Raman scattering spectra within the range of 10-4000 cm~(-1) of polycrystalline L-threonine have been examined with terahertz time-domain spectroscopy (THz-TDS) and Raman spectroscopy. Infrared spectrum between 400 and 4000 cm-1 were also recorded. We assigned the polar and the non-polar vibrational modes of the polycrystalline molecule in the range of both 6.7-93.2 cm~(-1) and 400-4000 cm~(-1) based on the theory of space group and the comparison of Raman and absorption spectra. Normal frequency vibrational modes were calculated for the single crystal form using the B3LYP method of density functional theory (DFT) and 6-311 + G** basis set. All the experimental THz absorption peaks and low frequency Raman scattering peaks of polycrystalline I.,-threordne were assigned.
%K THz spectrum
%K Raman scattering
%K amino acid<br>太赫兹光谱，
%K 拉曼散射，
%K 氨基酸
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=85193324D86B8315CB8897092649C321&yid=DE12191FBD62783C&vid=9FFCC7AF50CAEBF7&iid=708DD6B15D2464E8&sid=616A6492A6362536&eid=998A9ED044D3BACE&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=0