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Absorption Spectra arising from the Photolysis of Lead Tetramethyl


THE flash photolysis technique1 has been used to examine the photochemical decomposition of lead tetramethyl. At an energy of 2,500 joules (50 µF.; 10 kV.) the decomposition of lead tetramethyl at pressures up to 12 mm. mercury was shown to be largely complete in 1.2 m.sec. after the initial light flash; this was the time for the reaction vessel to become opaque to light due to the deposition of a lead film. The contents of the quartz reaction vessel (volume 500 cm.3, surface/volume = 1.6) were examined in this interval by passing a second light flash through the length (1 metre) of the vessel into a large Littrow (Hilger E1) spectrograph using a slit width of 0.02 mm.

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COOK, C., CLOUSTON, J. Absorption Spectra arising from the Photolysis of Lead Tetramethyl. Nature 177, 1178–1179 (1956).

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