Continuous wave irradiation transfer

A theoretical study of the photolytic reaction of Ni(CO)4 using LCCTO-Xg has appeared, and the observed luminescence is assigned to emission from the charge-transfer excited fragment Ni(CO)3. Multiple luminescence has been observed from continuous wave laser irradiation of gas-phase Ni(CO)4 at room temperature. Two of the emissions are coupled in an... 

Perhaps the most likely immediate commercial application of carbonyl fluoride, however, arises from its spectroscopic properties. Irradiation of mixtures of COF, and H, (or D,), over a wide pressure range and at ambient temperature, with the multiline output of a continuous wave CO, laser, results in the generation of excited state HF (DF) which lases [1387]. Energy transfer from the R, line (970 cm" ) of CO, (which is close in energy to the c, band of COF,) causes the dissociation of the COF, to CO and two excited state fluorine atoms which subsequentiy react with the dihydrogen (or dideuterium). However, COF, itself has been found to effect rapid vibrational de-excitation of HF [239], an observation that suggests that the COF,/H, route to the HF laser may be of limited practicality. 

The variations of the maximum temperature (T ax) with peak power were reported where each curve was related to a pulse period. All curves were issued from the same point, corresponding to the reference continuous wave, that is, power 30 W with Tmax 70 °C. Starting from this point, T ax always increases with pulse power (Figure 42). Thus, it was concluded that the energy transfer by pulse microwaves is more efficient than by continuous irradiation, and microwave-cured polyurethane films were very much harder than oven-cured materials. 

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