fluorescent X-rays

Japanese: fluorescent X-rays(英語表記)fluorescentXrays
fluorescent X-rays

...The energy of X-ray particles is given by h ν, where ν is the frequency and h is the Planck constant. If this is sufficiently greater than the energy binding the electron to the atom, the electron is knocked out of the atom, causing ionization and the emission of electrons (photoelectrons) from the material. If the energy is small, the electron is pushed to an outer orbit. When an atom that has had its electron knocked out and become ionized returns to its original state, the absorbed energy is released again as electromagnetic waves, resulting in fluorescent X-rays. The spectrum of fluorescent X-rays is specific to each atom, so it can be used to analyze the elements contained in a material (fluorescent X-ray analysis). ...

*Some of the terminology that refers to "fluorescent X-rays" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…X線の粒子としてのエネルギーは,振動数をν,プランク定数をhとしてhνで与えられ,これが電子を原子に束縛させているエネルギーより十分大きい場合,電子は原子外にたたき出され,電離や物質からの電子(光電子)の放出が起こり,エネルギーが小さい場合は電子を外側の軌道に押し上げることになる。電子をたたき出されてイオン化された原子が元に戻るとき,吸収したエネルギー分を再び電磁波として放出したものが蛍光X線fluorescent X‐raysである。蛍光X線のスペクトルはその原子特有のものであるので,これから物質に含まれる元素の分析などが行える(蛍光X線分析)。…

※「fluorescent X-rays」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

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