1. This loss is associated with a prolonged half life of the protein. 2. But given the ~ 18 year maximum half life , it disappears quickly. 3. Look at half life 2 external links it is already so huge. 4. What factors control the length of the radioactive half life of atoms? 5. Iodine-131 is a short-lived ( 8 day half life ) fission product. 6. She has no idea what the half life of her place is. 7. Bromoxynil decomposes readily in soil, with a half life of approximately two weeks. 8. :: Neutron half life is unaffected by magnetic field strength in ordinary contexts. 9. The test particles were lost exponentially with a half life of 553 Myr. 10. Current RTGs use Plutonium, which has a half life of about 80 years.