é : root. we a nly oo - : # yf a Mev g'cm 100 000 Peak. of iron'?**? jonization Peak of calcium”0+) ionization Uranium fission recoils . 10000 / Mev alpha particles “U-460 Beviron nuclet- ” % 300 Mev carbon fonsa 400 Bevcalcium ions ui LL °o Z ral ns Recoil protons fromfission neutro . ] = “yy a = 22 Mev protons ~~ +i rT | | Lo : © 1000r . i, Peak of carbon '°*} onteation 100 Fr a -§l—36 Bev carbon'®*! ions X- ray 10-1 100 _Mev protons | ——T Mev electrons 3 Bev protons 7 | - iL : ° : | : - _— : US DOE ARCHIVES 326 U.S. ATOMIC ENERGY COMMISSION RG n 2Bm) “Poe Ass hevi( Collection Box 132 _ 33586 Folder. Ro 4