Adaptive deadtime

The low MW power levels conuuonly employed in TREPR spectroscopy do not require any precautions to avoid detector overload and, therefore, the fiill time development of the transient magnetization is obtained undiminished by any MW detection deadtime. (3) Standard CW EPR equipment can be used for TREPR requiring only moderate efforts to adapt the MW detection part of the spectrometer for the observation of the transient response to a pulsed light excitation with high time resolution. (4) TREPR spectroscopy proved to be a suitable teclmique for observing a variety of spin coherence phenomena, such as transient nutations [16], quantum beats [17] and nuclear modulations [18], that have been usefi.il to interpret EPR data on light-mduced spm-correlated radical pairs. 

Figure 2.13. Graphic method for evaluating the maximum profit at a given selling price and starting point, A. (Fixed cost = Cg + Q for deadtime to) (Adapted from Geyson and Gray, 1972. With permission of John Wiley Sons, Inc.).

Theoretically it is possible to automatically adapt the tuning of the deadtime algorithm based on measured gas flows but this is complex and prone to error if there are multiple fuel gas consumers and producers. It is likely to be more practical to locate the analyser close enough to the heater so that dynamic compensation is not required. 

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