Results for (beta)=50 and (beta)=70 are highlighted by a red dashed box. The improved fit between the model-derived and simulation-derived xbu (the light-gray background highlights the best-fit graphs) signifies the range where the optimized (beta) falls, i.e., (beta)=60+-10 . From left to right: Columns 1 and 2: Experimental results (green circles) for the breakup period (lambda)|xbu and xbu , compared to the fitted model (solid blue line); Column 3: Temperature profile obtained by fitting AVG-IM to the experimental values and implemented in the ab-initio simulations. Columns 4 and 5: ab-initio simulation results (red circles) for (lambda)|xbu and xbu , and model predictions. Error bars – 1 (sigma).
