Title                  :PTEELS
Keywords               :EELS,AEM,CTEM,STEM,BACKGROUND,STATISTICS
Computer               :DEC LSI-11/73
Operating System       :RSX-11M-PLUS
Programming Language   :DEC-FORTRAN IV
Hardware Requirements  :None
Author(s)              :Dr. Pierre TREBBIA
Correspondence Address :Laboratoire de Physique des Solides
                       :Bat. 510, F91405 ORSAY CEDEX FRANCE
Abstract: We present an unbiased method for the estimation of the background in
EELS spectra. It looks for the maximum likelihood of a power law model whose
two dependent parameters A and R are estimated together with their variances
and covariance. Applying the usual rules of error propagation, core-loss
characteristic signals and their variances are estimated. Results can be used
as input data for the programs QUANTI and LIMIT which are also provided by the
EMMPDL facility. A complete description of the algorithm is given in "Unbiased
Method for Signal Estimation in Electron Energy Loss Spectroscopy...",
P. TREBBIA, Ultramicroscopy (1988).
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