…When an electronic state is excited, vibrational and rotational states are also excited, so the spectrum usually has a broad structure. This is called a band spectrum. The above is an example of an absorption spectrum, but when a molecule moves from the ground state to a higher energy state by gas discharge or light irradiation, and then transitions back to the original ground state, an emission spectrum is observed. … *Some terminology explanations that mention "band spectrum" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…電子状態の励起の際,振動や回転状態も励起されるので,スペクトルは通常幅広い構造をもつ。これを帯スペクトルband spectrumと呼ぶ。以上は吸収スペクトルの例であるが,気体の放電や光照射によって分子が基底状態からいったんエネルギーの高い状態に移り,再びもとの基底状態に遷移するとき,発光スペクトルemission spectrumが観測される。… ※「band spectrum」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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