Acta Optica Sinica, Volume. 6, Issue 6, 515(1986)
Application of an off-axis Fabry-Perot scanning interferometer for compensating Doppler broadening in fast-beam spectroscopy
Due to the motion of light source, one well known difficulty in fast-beam spectroscopy is the large line width caused by the Doppler shift of light across the collecting optics when a spectrometer is coupled to the beam in a conventional manner. In order to study the high-resolution beam foil spectroscopy of an 800-keV He+-ion beam passing through a transverse magnetic field, an off-axis Fabry-Perot interferometer was used and a line width of about 0.2 A was observed. The principle of coupling a fast beam to the off-axis Fabry-Perot to obtain Doppler compasation is described along with experimental results.
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YE HUI, ZHOU YAMING, WENG TAIMENG, YANG JIANGJUN, LU FUQUAN, SUN CHANGNIAN. Application of an off-axis Fabry-Perot scanning interferometer for compensating Doppler broadening in fast-beam spectroscopy[J]. Acta Optica Sinica, 1986, 6(6): 515