Activation products are materials made radioactive by neutron activation. Fission products and actinides produced by neutron absorption of nuclear fuel itself are normally referred to by those specific names, and activation product reserved for products of neutron capture by other materials, such as structural components of the nuclear reactor or nuclear bomb, the reactor coolant, control rods or other neutron poisons, or materials in the environment. All of these, however, need to be handled as radioactive waste. Some nuclides originate in more than one way, as activation products or fission products.
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| - Activation product (en)
- Produit d'activation (fr)
- 激活产物 (zh)
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| - 激活产物（Activation products）又稱為活化產物，是經中子活化后變得具有放射性的物質，比如核反應堆和原子彈中的結構材料，反應堆的冷卻劑，控制棒以及其他中子毒物。這些活化產物必須作為核廢料處理。反應堆中活化產物的產生是核電站通常使用一系列並聯冷卻劑環路的主要原因。 聚變反應器中產生的聚變產物，比如氦-4，不具有放射性。但聚變反應會產生很高的中子通量，因此而生成的活化產物是一個主要問題。 活化產物中主要核素包括： (zh)
- Activation products are materials made radioactive by neutron activation. Fission products and actinides produced by neutron absorption of nuclear fuel itself are normally referred to by those specific names, and activation product reserved for products of neutron capture by other materials, such as structural components of the nuclear reactor or nuclear bomb, the reactor coolant, control rods or other neutron poisons, or materials in the environment. All of these, however, need to be handled as radioactive waste. Some nuclides originate in more than one way, as activation products or fission products. (en)
- Les produits d'activation sont les éléments radioactifs créés par le processus d'activation. En particulier, les matériaux constitutifs des installations nucléaires subissent des irradiations neutroniques prolongées, qui génèrent des produits d'activation par capture neutronique. (fr)
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| - Activation products are materials made radioactive by neutron activation. Fission products and actinides produced by neutron absorption of nuclear fuel itself are normally referred to by those specific names, and activation product reserved for products of neutron capture by other materials, such as structural components of the nuclear reactor or nuclear bomb, the reactor coolant, control rods or other neutron poisons, or materials in the environment. All of these, however, need to be handled as radioactive waste. Some nuclides originate in more than one way, as activation products or fission products. Activation products in a reactor's primary coolant loop are a main reason reactors use a chain of two or even three coolant loops linked by heat exchangers. Fusion reactors will not produce radioactive waste from the fusion product nuclei themselves, which are normally just helium-4, but generate high neutron fluxes, so activation products are a particular concern. Activation product radionuclides include: [1] Branching fractions from LNHB database. [2] Branching fractions renormalised to sum to 1.0.. (en)
- Les produits d'activation sont les éléments radioactifs créés par le processus d'activation. En particulier, les matériaux constitutifs des installations nucléaires subissent des irradiations neutroniques prolongées, qui génèrent des produits d'activation par capture neutronique. Un matériau est activé non seulement à travers son élément principal, mais également par les noyaux qu'il contient à l'état de traces. C'est ainsi que la principale source de rayonnement dans les produits de démolition d'une centrale nucléaire est le cobalt 60 (60Co), formé à partir du 59Co présent à l'état de traces dans le fer à béton. C'est pour cette raison que les constructions nucléaires exigent des matériaux spéciaux et extrêmement purs, dits « de qualité nucléaire ». (fr)
- 激活产物（Activation products）又稱為活化產物，是經中子活化后變得具有放射性的物質，比如核反應堆和原子彈中的結構材料，反應堆的冷卻劑，控制棒以及其他中子毒物。這些活化產物必須作為核廢料處理。反應堆中活化產物的產生是核電站通常使用一系列並聯冷卻劑環路的主要原因。 聚變反應器中產生的聚變產物，比如氦-4，不具有放射性。但聚變反應會產生很高的中子通量，因此而生成的活化產物是一個主要問題。 活化產物中主要核素包括： (zh)
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