Figure 3: (A) Lifetime and probability of PNBs generated around clusters of 60 nm gold NSPs in water and measured as functions of the NP cluster size (single 0.5-ns laser pulse [email protected]/cm2), solid star rainbow PNB generated around multi-NP clusters of NSPs (plasmon peak close to 532 nm) and NRs (plasmon peak close to 787 nm) with two simultaneous 0.5-ns laser pulses (532 [email protected] mJ/cm2 and 787 [email protected] mJ/cm2 , the rainbow mechanism); (B) lifetime of PNBs2 as a function of the laser pulse (532 nm) fluence for mono-NP clusters of NSPs (star symbol shows the rainbow PNB generated around a multi-NP cluster of NSPs and NRs with two simultaneous 0.5 ns laser pulses (532 [email protected] mJ/cm2 and 787 [email protected] mJ/cm2 , the rainbow mechanism); (C): PNB lifetime-probability diagram for multi-NP clusters of mixed NSPs and NSs under identical excitation with one 0.5 ns laser pulse 532 [email protected] mJ/cm2 , one pulse 787 [email protected] mJ/cm2, and two simultaneous laser pulses - 532 nm and 787 nm (the rainbow mechanism).