HREELS description

After a brief description of the fundanietitals of High Resolution Electron Energy Loss Spectroscopy (HREELS), its potentialities in elucidating chemical reactions at a metal-polymer interface are illustrated by the well-known case of alunuRium evaporated onto polyimide (PMDA-OOA). Then the diHkuldes (but also the new promises) in roudnely applying this new spectroscopy to any metal-polymer sysKm will be shown for the copper-polyphenylquinoxaline interface. 

The high-pressure cell is identical to that in the one-tier-HPLP system but in this case both sides of the cell can be moved up and down. The top section of the cell has X and y displacement facilities, and, therefore, the sample can be precisely positioned in the x, y, and z directions and rotated through 360°. Nevertheless, when the cell is dosed, this upper part of the cell must be locked in one position to withstand the sealing force. Due to the size of the top section, the LEED/Auger optics are mounted on bellows to facilitate easy withdrawal when the sample is lowered to the HREELS position. This system contains all the other features mentioned in the description of the one-tier-HPLP system. 

The above description indicates that the applications of HREELS have been entirely basic and concerned with the interactions of molecules with clean or well-characterized surfaces. A very typi-... 

---