New cryogenic apparatus for FT-IR spectroscopic studies
Kang, N; Xu, YZ; Ferraro, JR; Li, WH; Weng, SF; Xu, DF; Wu, JG; Soloway, RD; Xu, GX
AbstractCryogenic Fourier transform infrared (PT-IR) spectroscopy, being an effective technique in improving the spectral resolution and signal-to-noise ratio, is utilized in our group. However, we have found the traditional cryogenic apparatus inconvenient in the following aspects: (1) The system does not work very well in preventing moisture/frost from condensing on the salt windows or samples. (2) The indirect way of cooling using a metal cold finger limits the efficiency of the system, We have designed a new cryogenic apparatus. The apparatus is composed of a cooling stage and a measuring stage, In the cooling stage, the sample is directly immersed in Liquid nitrogen, In the measuring stage, the sample is lifted just above the surface of liquid nitrogen, and the FT-IR spectrum is recorded. The dry cold nitrogen gas evaporated from liquid nitrogen forms a protective layer surrounding the sample and prevents moisture from condensing on the sample. Thus, neither vacuum nor salt windows are needed in cryogenic spectroscopic experiments using this method. The experimental results show that our method is effective in cryogenic FT-IR spectroscopic studies.
KeywordFt-ir Spectroscopy Cryogenic Apparatus
Indexed BySCI
WOS IDWOS:000169091900017
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Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWu, JG
Affiliation1.Peking Univ Univ Hong Kong Joint Lab Rare Earth M, Dept Chem, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China
2.Argonne Natl Lab, Div Chem, Argonne, IL 60439 USA
3.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
4.Univ Texas, Med Branch, Galveston, TX 77550 USA
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GB/T 7714
Kang, N,Xu, YZ,Ferraro, JR,et al. New cryogenic apparatus for FT-IR spectroscopic studies[J]. APPLIED SPECTROSCOPY,2001,55(5):643-646.
APA Kang, N.,Xu, YZ.,Ferraro, JR.,Li, WH.,Weng, SF.,...&Xu, GX.(2001).New cryogenic apparatus for FT-IR spectroscopic studies.APPLIED SPECTROSCOPY,55(5),643-646.
MLA Kang, N,et al."New cryogenic apparatus for FT-IR spectroscopic studies".APPLIED SPECTROSCOPY 55.5(2001):643-646.
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