APFEMDIX n A. Caleulati ¢ Fallout vaterial ¢ F eniun Comparison of beta energies fron mu293 ana mrt mixture to that from fission products. Rago, 223 Mev beta (TP = 424) ~0.03 Mew beta (? 31. m8 5.55 ver beta (Pie 30 03" Aseunes Ra293/ny2 patio of 0.75% To estimate mean average energy of betas from mixture: Tarte, Lagtore. 1.0 R293 0.3 1.33 Rb 3.55 1.33 Energy Rul06 0.03 . 3H} @ 164 Average energy ~ 0.5 or roughly equivalent to that assured for fission products, (Of course, the sverage energy of the betas ts not the sole consideration, shereas the average raxiom energy of beta from fission products is aszumed to be stout 1.5 Mew, the more energetic 3.55 Mev betas from Rh1O6 will give higher doses at greater depths.) *All of the data contained herein on rhethenium is contained int Hw=33008, A status report. Sept. 1S, 1954.