Steady C2H4/air flame: 4.58 cm/s (4.43 cc/s) C2H4; 10.6 cm/s (852 cc/s) air Laser-induced incandescence measurements of soot volume fraction Radius H = 10 mm H = 15 mm H = 20 mm H = 25 mm H = 30 mm H = 35 mm H = 40 mm H = 45 mm H = 50mm H = 55 mm H = 60 mm H = 65 mm H = 70 mm H = 75 mm H = 80 mm H = 85 mm -7.00 -5.945E-0010 -1.482E-0009 -2.850E-0010 -9.798E-0010 3.164E-0009 -4.569E-0010 1.472E-0009 -1.618E-0009 2.961E-0010 -2.416E-0009 -8.136E-0010 2.196E-0009 2.262E-0010 -5.472E-0010 3.593E-0009 -1.550E-0009 -4.297E-0010 -4.966E-0010 7.166E-0010 -6.75 -7.711E-0010 1.499E-0009 -6.704E-0010 2.013E-0009 1.102E-0009 -3.517E-0010 -5.873E-0011 1.006E-0009 3.163E-0009 -1.494E-0009 1.368E-0010 1.905E-0009 -9.065E-0010 2.302E-0009 1.776E-0009 -1.120E-0009 3.301E-0009 -2.390E-0009 2.949E-0009 -6.50 -5.305E-0011 6.082E-0010 -5.261E-0010 2.859E-0009 -9.314E-0010 1.725E-0009 9.617E-0010 4.129E-0009 1.501E-0009 1.224E-0009 -9.306E-0010 -1.226E-0009 4.691E-0009 -2.043E-0009 5.248E-0010 -7.102E-0010 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