Abstract
Laser pulses directed at surfaces can produce rapid and intense surface heating. Heating from laser pulses out of the absorbance range of compounds on the surface will cause compound desorption; pyrolytic products increase at higher pulse energies. Depending on the timing of the photoionization or ion extraction, species in different portions of the gas pulse can be mass analyzed. Using “thermometer” ions to characterize the results, we show that it is possible to study either lower or higher temperature regime pyrolysis products. It is possible to query initial pyrolytic products that have undergone either more or less subsequent associative chemistry.
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