Table 1.

Raman spectroscopic data for diesel soot.

Peak Designation	Peak position	Full width at half maximum(FWHM)	Intensity	$\frac{\mathbf{G}}{\mathbf{D}\mathbf{1}}$	$\frac{\mathbf{G}}{\mathbf{D}\mathbf{3}}$	$\frac{\mathbf{G}}{\mathbf{D4}}$	$\frac{\mathbf{G}}{\mathbf{D}\mathbf{1}\mathbf{+}\mathbf{D}\mathbf{3}\mathbf{+}\mathbf{D}\mathbf{4}}\mathbf{=}\frac{\mathbf{G}}{\mathbf{D}}$
D4	1146.21	198.30	129.63			7.19	0.60
D1	1336.67	173.45	1095.93	0.85
D3	1512.77	129.42	317.86		2.93
G	1583.12	74.88	932.22