抄録
The optical spectroscopic study of the Ar afterglow reaction of SiI4 has led to the observation of two visible emission systems of SiI. A new red-degraded emission in the 430-480 nm region was assigned to the A2Σ+-X2II1/2 system by comparison with absorption spectrum. The a (4Σ-1/2)-X2II3/2 system was detected in the 490-560 nm region. The intensity was so strong that several new bands could be identified in longer wavelengths. The excitation source of SiI emission was concluded to be metastable Ara+ions.
