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. Author manuscript; available in PMC: 2008 Sep 13.
Published in final edited form as: J Acoust Soc Am. 2008 Jun;123(6):4071–4081. doi: 10.1121/1.2903865

FIG. 4.

FIG. 4

(a) The pressure waveforms measured at a stand-off distance of 3 mm from F1 produced at different laser energy levels of E=9.3% (1), 21% (2), 33% (3), and 65% (4) with PRF=5 Hz, φ=0°, and Θ=90°; (b) idealized pressure waveforms at F1 used for theoretical calculation based on the Hamilton model for E=9.3% (1) and 21% (2); (c) calibration curve for the peak pressure at different pulse repetition rates and energy levels measured at 3 mm above the laser spark (φ=90°, Θ=90°); (d) relationship between the peak pressure p and measurement distance r above the laser spark at two different energy levels (E=9.3% and 21%, PRF=5 Hz). Each pressure waveform was obtained by signal averaging over 20 shots. In (c) and (d), error bars show standard deviation from three independent experiments.