Isotopes of Helium (Z=2)

Click on an isotope to get more information about its decay
Isotope Half-life Spin Parity Decay Mode(s) or Abundance
3He stable1/2+ %Abundance=0.000137 3
4He stable0+ %Abundance=99.999863 3
5He 0.60 MeV3/2- %N=100
6He 806.7 ms0+ %B-=100
7He 160 keV(3/2)- %N=100
8He 119.0 ms0+ %B-=100, %B-N=16 1
9He 0.30 MeV (1/2-) %N=100
10He 0.3 MeV 0+ %N=100
Isotope Explorer Nuclear Structure and Decay Data
8th Edition of the Table of Isotopes
Isotopes Project Home Page
Lawrence Berkeley National Laboratory
Return to Exploring the Isotopes