Potential errors caused by limitations of resolution

These problems can be overcome by ensuring that the signal at long times is recorded with the same efficiency as that at short times. How that is achieved is indicated in Fig. 16 which was recorded for the OH excited state as above. The first trace again shows a single shot. However, in this case, the total light level has been reduced and the photomultiplier gain increased so that the individual photon pulses can be seen. Thus, no matter when it occurs, the photon pulse will be recorded with the same efficiency. The distribution of the pulses follows the probability for 

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