励れい起き状じょう態たい

noun

excited state

Physics term for a state of a system (atom, molecule, nucleus, etc.) with energy higher than the ground state.

• 原げん子しが光こう子しを吸きゅう収しゅうすると、励れい起き状じょう態たいに遷せん移いする。

  When an atom absorbs a photon, it transitions to an excited state.

• 励れい起き状じょう態たいの寿じゅ命みょうは非ひ常じょうに短みじかいことが多おおい。

  The lifetime of an excited state is often very short.