Sec. 7.121 SEABORG AND PERLMAN TABLE OF ISOTOPES 



22' 



Isotope 

 Z A 



53 I" 3 



J134 



1 136 



J138 

 1137 



J138 

 1139 



I 



54 Xe>2« 

 Xe 1 * 6 

 Xei" 



Xe"' 



Xe'28 

 Xe 129 

 Xe 130 

 Xe 13 ' 

 Xe 132 

 Xe™ 



Class 



A 



B 



D 

 D 



D 

 D 

 F 



B 

 B 



Per cent 

 abundance 



0.094 

 0.088 



Type of 

 radiation 



. 7 



. y 



fi-.y 



£ . 7 

 0", « 



I.T.(?),e-, t 



* . 7 



Half-life 



22 hr; 

 20.5 hr 



54 min 



6.7 hr; 

 6.6 hr 



I.T., e~ 



1.8 min; 



86 sec 

 22.0 sec; 



22.5 sec; 



18 sec 



5.9 sec 

 2.6 sec 

 30 days 



75 sec 

 34 days 



Energy of radiation, Me\ 



Particles 



1.4 abs. Al; 

 1.1 cl.ch. 



7-rays 



1 1 days 



1.40(25 %), 

 1.00 

 (40 % ). 

 0.47 

 (35 % ) 

 spect.; 1.4 

 abs. Al; 

 1.6 abs. 



6.5 abs. Al 



0.56(mean) 

 (n) abs. 

 paraffin ; 

 0.7 (mean) 

 (n) p re- 

 coil in 

 cl.ch. 



0.55 abs. 

 Pb; 0.528 

 spect. 



> 1 abs. Pb 



1.6 abs. Pb; 

 1.3 abs.; 

 1.27, 2.00 

 spect. 



Produced 

 by 



2.9 abs. Pb 



0.175,0.125 



spect. 



conv. 

 0.9 abs. 



of e~ 



U-n, Te 133 

 0~-decay, 

 parent of 

 Xe 133 



U-a 



Pu-n 



Pb-a 



U-n, Te 134 

 /3-decay 



Th-w 



U-a 

 Pu-n 

 U-n, Te 136 



/S~-decay, 



parent of 



Xe 136 , or 



parent of 



Xe 136m 



(-10%), 



Xe' 3 » 



(~90%) 

 Th-w 

 Pu-n 

 U-a 

 U-n, parent 



of Xe"8 

 U-n, parent 



of Xe 137 

 Pu-n 



U-n, ances- 

 tor of Cs 138 



U-n, ances- 

 tor of Ba 139 



Xe-n-p 



l-p-n 



Xe-n-y 



l-p-n 



\-d-2n 



U-n m.s. 

 U-n m.s. 

 Xe-n-n 



