Fission Product Yield - Ordered By Halflife

Ordered By Halflife

Yield Isotope Halflife Comment
2.8336% 131I 8.02d Important in nuclear explosions and accidents but not in cooled spent nuclear fuel
0.3912% 106Ru 373.6d
6.7896% 133Cs → 134Cs 2.065y neutron capture converts a few percent of nonradioactive 133Cs to 134Cs, which has low direct yield because beta decay stops at 134Xe
2.2713% 147Pm 2.62y
0.0297% 125Sb 2.76y
<0.0330% 155Eu → 155Gd 4.76y both neutron poisons, most will be destroyed by neutron capture while still in reactor
0.2717% 85Kr 10.78y Current nuclear reprocessing releases it to atmosphere
<0.0003% 113mCd 14.1y most will be destroyed by neutron capture while still in reactor
5.7518% 90Sr 28.9y One of two principal medium-term radiation and heat sources
6.0899% 137Cs 30.17y One of two principal medium-term radiation and heat sources
<0.4203% 151Sm 90y Most will be destroyed by neutron capture while still in reactor
6.0507% 99Tc 211ky Dominant radiation source among FP in period about ×104 to ×106 years; mobile in environment; candidate for disposal by nuclear transmutation
0.0236% 126Sn 230ky
0.0508% 79Se 327ky
6.2956% 93Zr 1.53My
<6.3333% 135Cs 2.3My
0.1629% 107Pd 6.5My
0.6576% 129I 15.7My Mobile in environment; candidate for disposal by nuclear transmutation
<1.0888% 149Sm nonradioactive neutron poison
<0.0065% 157Gd nonradioactive neutron poison

Read more about this topic:  Fission Product Yield

Famous quotes containing the word ordered:

    But one sound always rose above the clamor of busy life and, no matter how much of a tintinnabulation, was never confused and, for a moment lifted everything into an ordered sphere: that of the bells.
    Johan Huizinga (1872–1945)