100 70 50 40 30 nw Ww RO N TIME IN DAYS Nm wha va Oo 20 280 \\ 285 290 295 300 HEIGHT IN KILOFEET Fig. 3 -- Time versus height for particles injected at 305 kilofeet. computed using equation (11). 3305 These curves were The number above each curve is the mass of the impurity particles in atomic units and the density of the impurity particles was assumed to be 6.4 gm/em?, Other input conditions were m = 28,97 atomic units, a= 1.70x 1078 em, p = 1.72 x 1075 gm/cm® at 100 kilofeet, and T = 245°K. 22