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A high‐performance low‐cost computer interface for AES/XPS
Author(s) -
Tomich D. H.,
Grazulis L.,
Grant J. T.
Publication year - 1987
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740100205
Subject(s) - fortran , x ray photoelectron spectroscopy , software , microcomputer , spectrometer , interface (matter) , computer science , spectrum analyzer , computational science , computer hardware , optics , physics , operating system , telecommunications , nuclear magnetic resonance , chip , bubble , maximum bubble pressure method
An Auger/XPS system has been automated using a mircocomputer. Some considerations in the design of the interface which could be used for a variety of spectroscopies will be presented and should be of general interest. The spectrometer used in this work was a Perkin–Elmer Physical Electronics Model 550 SAM/XPS. The computer used was a Zenith Z‐100 but the interface was designed for use with any microcomputer having two parallel I/O ports. Hardware details will be discussed with emphasis on the versatility, efficiency, and cost. The sweep control for the electron energy analyzer utilizes two 12 bit DAC's, one for the starting energy and another for the energy sweep range, thereby allowing 12 bits of resolution in both the sweep and offset. The software has been written in Microsoft FORTRAN, a subset of FORTRAN 77. The versatility of this system is illustrated with XPS data from Ag and a high kinetic energy backscattered primary.