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(Thermal) Neutron Capture Radiohalo Manufacturing Chain: Copyright (c) 1992 컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� by John Brawley 204 Pb (Stable nonradiogenic 'original' lead) n   205 Pb (3 x 10^7 Y)-EC-> 205 Tl [Stable]-n-> 206 Tl (4.19 min) -�-->커 n  旼(Non횮yclic: once only)컴컴컴컴컴컴컴컴컴컴컴켸 旼> 206 Pb (Stable) <컴켸 �n  �袴袴袴袴袴袴袴袴袴敲L� n =neutron  � 207 Pb (Stable) <컴커 � REQUIREMENTS: �E� � =Alpha Decay  �n  C � 1) Neutron Flux �G� �- =Beta Decay  C 208 Pb (Stable)y � 2) Lead particles �E� m =Isomer  yn  c � 3) Geologic time �N� mb =millibarns  c 209 Pb (3.3 Hr)l 훤袴袴袴袴袴袴袴袴袴�D� EC =Electron Capture l �-  i i 209 Bi (Stable)c컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴� cn  읕컴컴컴컴<-�-- 207 Tl (4.8 min )컴컴컴컴� � � 210m Bi(3 x 10^6 Y)-n-> 211 Bi (2.15 Min)-�-> (84%) 6.622 MEV � � � 210 Bi (5 Days)or (16%) 6.278 MEV � � � �-  � � 210 Po (138 Days) -n-> (30 mb) 211 Po (.52 sec)-�-> 7.445 MEV 컴� �� (.5 mb) 211m Po (25 sec) or 7.278 MEV 컴� 읕컴컴� 5.30 MEV (Inner Halo)

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