Page 76 - Synthesis of Functional Nanoparticles Using an Atmospheric Pressure Microplasma Process - LiangLiang Lin

Chapter 4
TiCl4 vapor into the H2-contained plasma resulted in the appearance of various emission lines relevant to Ti radicals, indicating that the dissociation of TiCl4 vapor also occurs in the presence of H2. Table 4.2 summarizes radiative transition information for the prominent emission lines observed in the spectra.
Figure 4.3 (a) OES spectra obtained from microplasma operated at different powers, without H2. (b) OES spectra obtained from microplasma operated at same output voltage, with different H2 concentrations.
Table 4.2 Summary of intensive emission lines collected from spectra 10,25,28
Species System Ti Atomic lines I
Ionized lines II
N Second positive
system
H Balmer series
Ar Ar I
Transition
C 3∏u→B 3∏g
n→2s,2p 4p→4s
Wavelength
430.6 nm, 453.3 nm, 498.2 nm, 521.0 nm, 551.5 nm, 626.0 nm 368.5 nm, 376.2 nm, 439.5 nm 315.9 nm, 337.1 nm, 357.7 nm,
380.5 nm, 405.9 nm
489.6 nm (Hβ), 657.2 nm (Hα) 696.5 nm, 706.7 nm, 738.4 nm, 750.4 nm, 763.5 nm, 772.4 nm, 794.8 nm, 826.5 nm, 842.5 nm
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