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FIZIKA A 5 (1996) 2, 49-54
 
XPS ANALYSIS OF BIOMATERIALS USING A NEW METHOD OF INTEGRATED CHARGE
COMPENSATION
KEVIN S. ROBINSON and HANS SCHMIEDELa
Kratos Analytical Ltd., Urmston, Manchester M41 7LD, England
aVSI Vacuum Science Instruments GmbH, 65307 Bad Schwalbach, Germany
Received 7 April 1995
Revised manuscript received 3 June 1996
The major problem in X-ray photoelectron spectroscopy of polymeric and other insulating
materials is that of ``charge neutralisation'' or `` charge compensation''. Due to
variable potentials on the surface of the investigated specimen broadening of peaks, or
even multiple peaks, are observed. Various methods are applied to achieve the charge
compensation. The AXIS series of instruments provide a secure and reliable charge
compensation method, which uses the characteristic properties of the magnetic lens. The
system enables confident determination and use of small binding energy shifts in both
spectroscopy and imaging.
UDC 538.95
PACS 61.10.-i
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