Sec. 7.12] SEABORG AND PERLMAN TABLE OF ISOTOPES 



Isotope 

 Z A 



78 Pt'M 



p t 194 

 p t 196 

 p t 196 

 Pt 196 " 



p t 197 



p t 197 



p t 198 

 p t 199 



79 Au<'«° 

 Au'si 



Au"= 



Au 19 ' 



Au 1!M 



Aui" 



Au"6 



243 



Cla 



B 



Per cent 

 abundance 



D 

 B 



B 



32.8 

 33 7 

 25.4 



F 

 D 



B 



B 



7.23 



B 



Type of 

 radiation 



K, y, e~ 



I.T., «-, 7 



0~. y 

 0- 



a 



K cr/3^ 



K, t. e- 

 K, e~ 



K, 



7, «" 



K. 



7. <'" 



/3-;Kor [.T. 



Half-life 



4.33 days 



80 min 

 18 hr 



3.3 days 

 31 min 



5 min 

 1 day 



4.7 hr 

 15.8 hr 



39.5 hr; 

 39 hr 



185 days; 

 180 days 



14.0 hr; 

 13 hr 



Energy of radiation, Mev 



Particles 



0.11 (e-) 

 abs. Al; 

 0.115(e-) 



abs. Al 



0.65 abs.; 

 0.72 abs. 



1.8 abs. 



5.2 ion. ch. 



0.4(e~) abs. 

 Al 

 < 0.2(<?~) 



abs. Al 



0.31, 1.8(<r 



abs. Al 



0.1 (e~) abs. 

 Al 



7 -rays 



0.18, 1.5 

 abs. of e' 

 abs. Pb 



0.337 spect. 



conv. 



2.3 abs. Pb 



0.329, 1.48, 



0.286, 



0.46, 2.0 



spect. 



conv., 



spect.; 



0.4, 1.8 



abs. of e~, 



abs. Pb 

 0.19, 1.6 



abs. of e~, 



abs. Pb; 



0.096 



(90%), 



0.129 



(10%) 



spect. 



conv., 



coincid. 



Produced 

 by 



Ir-a-pn 

 lr-d-2n 



Pt-«-7 



Vt-d-p 

 Pt-n-2n 



Au'« 

 K-decay 



Vt-d-p 



Hg-w-a 



Pt-n-7 



Vt-d-p 



Pt-n-2« 



Hg-n-a 



Pt-n-7 



Pt-d-p 



Pt-K-7 



Pt-d-p 

 Hg-n-a 



Au-d- ? 

 Ir-a-4n 

 Pt-d-3n, 

 parent of 



p t 191 



Ir-a-3« 

 Pt-d-2n 

 Ir-a-2n 

 Pt-d-3n 

 Parent of 



Ptl93 



Ir-a-3n 

 Pt-d-2n 

 Pt-p-n 



lr-a-2n 

 Pt-d-2n 

 Pt-p-n 



Au-n-2n 



