radiolysis

chemical reaction

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July 13, 2026

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Radiolysis is the chemical decomposition of a substance caused by radiation. This process is initiated or sustained by the absorption of electromagnetic radiation. When a molecule absorbs radiation, its electrons can be excited to higher energy states. If this excitation leads to the breaking of chemical bonds, the molecule can dissociate into fragments, a process known as photodissociation or photolysis. This can result in the formation of reactive species called radicals. While the term "radiolysis" specifically refers to decomposition by radiation, it is a type of chemical reaction.123

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radiation
Radiation chemical reactions
…as well as (parent) positive-ion fragmentation and ion-molecule reactions. Some such consequences are summarized for a few cases.
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…as well as (parent) positive-ion fragmentation and ion-molecule reactions. Some such consequences are summarized for a few cases.
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food preservation
Biological effects of irradiation
…an extra electron) during the radiolysis (radiation-induced splitting) of water molecules. The radiolysis of water molecules produces hydroxyl radicals, highly reactive species that interact with the organic molecules present in foods. The products of these interactions cause many of the characteristics associated with the spoilage of food, such as off-flavours…
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…an extra electron) during the radiolysis (radiation-induced splitting) of water molecules. The radiolysis of water molecules produces hydroxyl radicals, highly reactive species that interact with the organic molecules present in foods. The products of these interactions cause many of the characteristics associated with the spoilage of food, such as off-flavours…
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