Atoms have many excited energy states. Transitions between these energy levels, permitted by transition rules, are observed as line spectra in emission spectra such as discharges or absorption spectra . Among these line spectra, those that arise from transitions involving the ground state are called resonance lines. Typical examples include 184.9 nm (1P1-1S0 ) and 253.7 nm ( 3P1-1S0 ) for Hg . Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition |
原子には多数の励起エネルギー状態がある.遷移則によって許されたこれらのエネルギー準位間の遷移は,放電などの発光スペクトル中または吸収スペクトル中に線スペクトルとして観測される.これらの線スペクトルのうち,基底状態の関与する遷移によって起こるものを共鳴線という.Hgの184.9 nm(1P1 - 1S0),253.7 nm(3P1 - 1S0)などはその代表的なものである. 出典 森北出版「化学辞典(第2版)」化学辞典 第2版について 情報 |
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