10° = 10* FISSION? FT? 10° be 19" — P wom ZUN1 CLOUD 107 = —— ZUNI LAGOON — —— ——= TEWA CLOUD —~—- TEWA LAGOON ma —-—— NAVAJO | 190" = FLATHEAD — . — ot: j' 3 IONIZATION RATE ( Ww ) 10° k= | FLUE oF PEE 10 PETE 107 PPE 10 3 AGE (HR) Figure 3.39 Computed ionization-decay rates, Shots Flathead, Navajo, Zuni, and Tewa. 112 4 10