noun
excited state
Physics term for a state of a system (atom, molecule, nucleus, etc.) with energy higher than the ground state.
原子が光子を吸収すると、励起状態に遷移する。
When an atom absorbs a photon, it transitions to an excited state.
励起状態の寿命は非常に短いことが多い。
The lifetime of an excited state is often very short.