Radionuclide Carbon-14
Physical Half Life 5,730Years
Maximum Beta Energy 156keV
Range of Maximum Energy Beta Particle 22cm
Dose Rate at 1cm fro a 1mCi Beta Point Source 300rad/h
Most Prominent Gamma Photons n/a
Gamma Ray Exposure Rate at 1cm from a 1mCi Point Source n/a
Annual Limit on Intake - ALI (oral)* 2mCi
Type and Thickness of Shielding Recommended for mCi Amounts None

*ALI-intake of a given radionuclide which would result in a committed effective dose equivalent of 5 rems or a committed dose equivalent of 50 rems to an organ or tissue.

For further information concerning Carbon-14 contact William Fendt at or call 831-1434.