variation of the proportion of different gamma component to time after burst. The average percentages for the sow,actiae high energy gamma rays was 45, 22, and 35 per cent, respectively, Howe ever, the percentages varied considerably from one absorption curve to another, The lead absorption curves of 1-251.03 sample taken on + 22.4 oe 26.1 days show an exceptionally large proportion of high energy Be TABLE 5.11 - Average Hard Gamma ergy for Each Shot Shot Average Gamma Energy ‘Maximum Deviation 1 1.2 + 0.2 2 1.55 t 0.35 3 1.41 + 0.19 1.11 + 0.1 (Mev) 4 . (Mev) Table 5.12 shows the percentage of each gamma component and their averaged energy for each shot at times less than 14 days. TABLE 5.12 ~- Average Energy and Average Percentage of “Apparent" Gamma Components for each Shot at Times Less than 14 Days Shot Soft Gamma (%) Max. Dev. Med. Gamma Max. Dev. Hard Gamma Ke Dev, merge (£) ($) (%) (%) (%) (Nev) 1 39 +15 25 +8 36 +9 0.59 2 60 + 16 w7zo' £5 23 tu 0.52 3 50 + 20 20 + 16 30 tu 0.58 4 3% t+ 23 +10 41 + 20 0.60 5ele4o2 Absorption zed The only portion of the aluminum absorption curves analy high this of on was that for the highest beta energy. The upper porti absorber thickenergy curve must be extrapolated over 4 large range of original curve doubtful. nese which would make any further analysis of the all shota Analyses of aluminum absorption data for beta energies for time in with ases decre indicate that the energy of the hardest beta ray accordance with the theory. ug