17
Beam Profile of the 5 cm
2
Transducer Operating at 1 MHz and 3.3 MHz
Spatial distribution of the radiated field is essentially a collimated beam of the ultrasonic energy having
a cross-sectional area of 4.0 cm
2
for the 5 cm
2
sound head when measured at a point 5 mm from the
transducer face.
Energy distribution within the radiated field is 2.5 W/cm
2
maximum and it takes a generally conic
shape, having decreasing intensity at progressively increasing distance from the face of the
transducer. This field distribution applies for the radiation emitted into the equivalent of an infinite
medium of distilled, degassed water at about 30° C and with power line variations in the range
of +/- 10% of the rated voltage.
