Table 1. Diffraction Correction Parameters for Our Transducer (f = 8 MHz with b = 5 mm) at Several Representative Values for Liquid Speeds of Sound.

Speed of Sound:	w = 200 m·s–1	w = 800 m·s–1	w = 2000 m·s–1
	L = 2 × Ls = 24 mm
S	0.024	0.096	0.240
ϕ	0.0355	0.0756	0.125
Δt/μs	120	30	12
δtd/μs	0.000706	0.00150	0.00249
	L = 2 × Ll = 60 mm
S	0.060	0.240	0.600
ϕ	0.0585	0.125	0.205
Δt/μs	300	75	30
δtd/μs	0.00116	0.00248	0.00408