Sec. 7.12] 



SEABORG AND PERLMAN TABLE OF ISOTOPES 



180 



Isotope 

 7. A 



8 O" 

 On 



O 18 

 O l » 



9 F" 



pi8 



Pl9 

 P20 



10 Ne 19 

 Ne 2 ° 

 Ne 21 

 Ne 22 



Ne 23 



11 Na 21 



Na 22 



Na" 

 Na 2 * 



Class 



Per cent 

 abundance 



A 



B 



99.757 

 0.039 

 0.204 



100 



Type of 

 radiation 



P • 7 



+ 



90 51 

 0.28 

 9 21 



100 



/»-. 7 



/3 + 



0+(~lOO%) 



7, no K 



0~. 7 



Half-life 



29.4 sec; 

 29.5 sec; 

 27.0 sec 



70 sec 



112 min 



12 sec 



20.3 sec 



40 sec; 

 40.7 sec 



23 sec 



2.6 yr; 

 3.0 yr 



14.8 hr 



Energy of radiation, Mev 



Particles 



4.5(30 •-, ), 

 2.9(70%) 

 abs. Al; 



4.1 abs.; 



3.2 abs. Al 



2.1 cl.ch. 



0.7 cl.ch.; 

 0.7 abs. 

 Al; 0.95 

 (20%). 

 0.6(80%) 

 cl.ch. 



5.0 cl.ch. 



2.20 cl.ch. 



4.1 abs. 



0.58 cl.ch.; 

 0.575 



spect. ; 

 coincid. 



1.390 

 spect., 

 coincid.; 

 1.4 spect. 



7-rays 



1.6 abs. 



No 7; 1.4 

 cl.ch. 



recoil 



2.2 cl.ch. 

 recoil 



1.3 spect.; 

 1.30 spect. 



1.380,2.758 

 spect.; 1.4 

 2.8 spect.; 

 2.87, 2.74 

 Be-7-H 

 reaction, 

 D-7-n 

 reaction; 

 2.56, 2.68. 



Produced 

 by 



O-7-n 

 0-n-2n 



O-n-y 

 F-n-p 



N-a-w 



O-d-n 



O-P-y 



F-y-2n 



O-a-pn 



O-p-n 



O-d-n 



O-t-n 



F-n-2n 



F-d-t 



F-y-n 



Ne-d-« 



Na-7-a«(?) 



F-d-p 

 F-n-y 

 Na-n-a 



F-p-n 



Ne-d-p 



Na-n-i> 

 Mg-»-a 



Ke-p-n 



Ne-rf-n 



Mg 2i -p-a 



F-a-n 



Ne-d-n 



Na-«-2n 



big- d-a 



Na-d-p 



Na-«-7 



Mg-d-a 



Mg-n-p 



Mg-y-p 



Al-rt-a 



Al-d-pa 



A\-y-n2p 



Si-y-n3p(?) 



