ðə slˈoʊ dˈiːkɹiːs ʌvðə flʊɹɹˈɛsəns ɪntˈɛnsᵻɾi æt lˈeɪɾɚ tˈaɪmz ɪz kˈɔːzd, ɪn ɐdˈɪʃən tʊ ˈʌðɚ pɹˈɑːsɛsᵻz, baɪ nˈɑːnfˌoʊɾoʊkˈɛmɪkəl kwˈɛntʃɪŋ.
The slow decrease of the fluorescence intensity at later times is caused, in addition to other processes, by non-photochemical quenching.