Theoretical bubble profiles for the parameter combination: (a) α = 0.124 and γ = 2.31 at times t = 0.0 (A), 1.76 (B), 1.96 (C) and 1.97 (D) with comparisons to experimental results at time t = 1.59 (open circles) and 1.75 (filled circles), and (b) α = 0.167 and γ = 0.87 at times t = 0.0 (A), 1.05 (B), 1.98 (C), 2.08 (D) and 2.09 (E) with comparisons to experimental results at time t = 1.05 (open circles) and 1.86 (filled circles).