[The method of wavelength calibration in high resolution absorption spectroscopy].
A new method for the calibration of wavelength in a measurement of high resolution molecular absorption spectra by referring the standard spectrum of iodine molecule is presented in this paper. Segment offset is employed in the calibration of wavelength, while the data smoothing, baseline determining and peak fitting are applied to preprocess the spectral data. A visual software is provided for automatically calibrating wavelength with a friendly style of mutual dialogue between human and computer. The software has been used to calibrate the absorption spectra of N2+ molecular ion in the visible region 16,422-17,896 cm-1, the absolute accuracy is about 0.006 cm-1.
Wu
Sheng-hai
SH
Key Laboratory for Optical and Magnetic Resonance Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China.
Zhuang
Hua
H
Yang
Xiao-hua
XH
Liu
Yu-yan
YY
Chen
Yang-qin
YQ
D002138:Calibration; D007455:Iodine / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted; D012984:Software
D007455:Iodine