1125 
at which the pressure-time curves might show increased decay rates 
related to the cessation of contributions from explosive elements 
on the two sides of x, may be expected to occur at t, and ty, 
representing the contributions of suerse elements at. x= Oandx = 4, 
respectively. For rg » &(v2-c¢ 2)3/2c = R, ty; = ty. The expressions 
for ty, x4, ty, to, and t % are as follows: 
t -8+2 [22+ ¢- ne]? (8) 
x, > $- er | - 2] * forro<R (9) 
x, = 0 for rg>R (10) 
ty = 2 Ze *¢ (v2 = 2 | forrg< R (1) 
t,=t, <4 [0 + 4? | 2 torr, ZR (22) 
ty =t 2.4.2 [12+ (4?|? (13) 
forex i& Re pha) 
te - ty = bys for - ZR (15) 
In this case, tes the time of arrival of the finak signal at the 
gauge, is always equal to t,. The times of breaks on the pressure- 
time record as measured from the shock front, assumed to coincide with ty» 
-15- 
