2 . The number of tag-dissociating states is then a subsection of this line with D < E 2 ≤ hν. If the photon energy is smaller than the dissociation energy (hν ≤ D), the removal of the tag cannot happen, and thus the number of dissociated molecules is N diss = 0. Otherwise, when hν > D, the number of the dissociated molecules is calculated as N diss = (hν -D) • cos(45