Lee 



0.8 



^. 0-6 



la. 



'A 

 lo. 



IQ." 



laT 0.4 



0.2 



1.0 1.2 1.4 1.6 1.8 2.0 A. 



Fig. 2 First- and second-order pressures vs . X. = \2/^| 

 at e = - 90° for \i = 10b 

 1.0 



0.8 



.-- 0.6 



lo. 



0.4 



0.2 



1.0 1.2 1.4 1.6 1.8 2.0 \ 



Fig. 3 First- and second-order pressures vs. \ = X2/^i 

 at e = - 45° for \, = 10b 



932 



