O€ rT TTT I Pr oT Prien TT TT TTTtt To] PoP TP TTT 20 40 60 Fig. 11—Relative disintegration rates as a function of time for indi- vidualfission products inthe case of *°8U fission produced by a thermonuclear neutron spectrum. SNVAV ONY ‘UANHD0UD ‘ONITICUA ho So oS — TOTAL ACTIVITY, % pp o Oo 2 100