photonuclear reaction

...However, at relatively high pressures, the free radicals produced by photolysis further react with other molecules, and the process often becomes complicated when subsequent photochemical reactions are included. (2) A reaction in which a γ-ray, which has more energy than the binding energy of a proton, neutron, or α particle, is absorbed by an atomic nucleus and these particles are released, is called a nuclear photodisintegration (photonuclear reaction). As with the photodisintegration of molecules, the disintegration of atomic nuclei by the absorption of γ-rays is important in understanding the properties of atomic nuclei, since the interactions between nucleons and between γ-rays and nucleons are well understood. ...

*Some of the terminology that refers to "photonuclear reaction" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…ところが，比較的高い圧力では，光分解によって生成した遊離基がさらに他の分子と反応するので，光化学の後続反応も含めると複雑になることが多い。(2)陽子，中性子，α粒子などの結合エネルギーよりも大きいエネルギーをもつγ線が原子核に吸収されて，これらの粒子が放出される反応を光核反応nuclear photodisintegration(photonuclear reaction)という。分子の光分解の場合と同様に，γ線の吸収による原子核の分解は，核子間およびγ線と核子との間の相互作用がよくわかっているので，原子核の性質を知るうえで重要である。…

※「photonuclear reaction」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報