Thin film deposition by the electrospray method for californium-252 plasma desorption studies of involatile molecules

An electrospray system and procedure has been developed for the routine preparation of thin films of involatile molecules for analytical measurements. An anode-cathode design has been developed and conditions for reproducible performance have been established. Solvent systems for polar and nonpolar molecules have been investigated and electron microscopy measurements have been made on the microstructure of the deposits and fraction of surface coverage. The method does not appear to degrade thermally-labile molecules. 4 figures.