Question

List all the dominant fission and activation products.

Answer 1

Fission products are the atomic fragments remaining after a large atomic nucleus undergoes nuclear fission. For example, when unranium undergoes fission, the large nucleus splits into two smaller nuclei along with a few neutrons, release of energy and gamma rays. The two smaller nuclei are the fission products.

The dominant fission products are

• Arsenic-75
• Germanium-72,73,74,76
• Selenium- 77, 78, 79, 80, 82
• Bromine-81
• Krypton-83, 84, 85, 86
• Rubidium- 85, 87
• Strontium- 88, 89, 90
• Yttrium-89
• Zirconium- 90 to 96
• Molyndenum- 95, 97, 98, 100
• Rhodium- 103
• Palladium- 105 to 110
• Silver- 109
• Cadmium- 111 to 116
• Indium-115
• Niobium-95
• Tin- 117 to 126
• Antimony- 121, 123, 124, 125
• Tellurium- 125 to 132
• Iodine- 127, 129, 131
• Xenon- 131 to 126
• Caesium- 133, 134, 135, 137
• Barium- 138, 139, 140
• Technetium-99
• Ruthenium -101 to 106

Activation products are materials which are made radioactive by neutron activation. Activation product radionuclides include:

• Hydrogen-3
• Beryllium-10
• Carbon-14, 15
• Nitrogen-16
• Oxygen-19
• Sodium- 22, 24
• Magnesium- 27
• Aluminium- 26
• Sulphur-35
• Chlorine-36
• Argon -39, 41
• Potassium- 40, 42
• Calcium- 41, 45
• Scandium- 47, 48
• Chromium- 51
• Manganese- 54, 56
• Iron- 55, 59
• Cobalt- 57, 58, 60
• Nickel- 59, 63, 65
• Copper- 64, 66
• Zinc- 65
• Niobium-93m
• Molybdenum- 93
• Technelium- 99m
• Silver- 110m
• Indium- 115m
• Iodine- 126
• Hafnium-175, 181
• Tantalum- 182
• Tungsten- 181, 185, 187
• Gold- 198
• Mercury- 197, 203