Radioisotope

Mass

Maximum ß-energy (MeV)

Half-Life

Specific Activity at 100% isotopic enrichment

Tritium
Carbon
Phosphorus
Phosphorus
Sulphur

3
14
32
33
35

0,018
0,159
1,71
0,249
0,167

12,33 years
5730 years
14,3 days
25,4 days
87,4 days

28,8 Ci/milliatom
62,4 mCi/milliatom
9130 Ci/milliatom
5140 Ci/milliatom
1494 Ci/milliatom