Decay Nuclide Half-Life Nuclide Name Mode 198Au 2.69 d gold-198 β– 14C 5730 y carbon-14 β– 37Ca 175 ms calcium-37 β+ 60Co 5.26 y cobalt-60 β– 137Cs 30.23 y cesium-137 β– 53Fe 8.51 min iron-53 β+ 220Fr 27.5 s francium-220 α 3H 12.26 y hydrogen-3 β– 131I 8.07 d iodine-131 β– 37K 1.23 s potassium-37 β+ 42K 12.4 h potassium-42 β– 85Kr 10.76 y krypton-85 β– 16N 7.2 s nitrogen-16 β– 19Ne 17.2 s neon-19 β+ 32P 14.3 d β– 239Pu 2.44 × 104 y α 226Ra 1600 y radium-226 α 3.82 d α 90Sr 28.1 y strontium-90 β– 99Tc 2.13 × 105 y β– 232Th 1.4 × 1010 y thorium-232 α 233U 1.62 × 105 y uranium-233 α 235U 7.1 × 108 y uranium-235 α ms = milliseconds; s = seconds; min = minutes; 238U 4.51 × 109 y uranium-238 α h = hours; d = days; = years
Nuclide Half-Life Decay Mode Nuclide Name 198Au 2.69 d β– gold-198 14C 5730 y β– carbon-14 37Ca 175 ms β+ calcium-37 60Co 5.26 y β– cobalt-60 137Cs 30.23 y β– cesium-137 53Fe 8.51 min β+ iron-53 220Fr 27.5 s α francium-220 3H 12.26 y β– hydrogen-3 131I 8.07 d β– iodine-131 37K 1.23 s β+ potassium-37 42K 12.4 h β– potassium-42 85Kr 10.76 y β– krypton-85 16N 7.2 s β– nitrogen-16 19Ne 17.2 s β+ neon-19 32P 14.3 d β– 239Pu 2.44 × 104 y α 226Ra 1600 y α radium-226 3.82 d α 90Sr 28.1 y β– strontium-90 99Tc 2.13 × 105 y β– 232Th 1.4 × 1010 y α thorium-232 233U 1.62 × 105 y α uranium-233 235U 7.1 × 108 y α uranium-235 238U 4.51 × 109 y α uranium-238 ms = milliseconds; s = seconds; min = minutes; h = hours; d = days; = years
sess_CH-2b1h.docx