MODEL

Lorentz

AUTHOR/MODIFICATION

John Barker 10 FEB 1999

Alan Munter 08 JULY 1999, converted to Java

APPROVED FOR DISTRIBUTION

DESCRIPTION

Model describes a Lorentzian (Ornstein-Zernicke) including a flat background.

Resolution smeared version is also provided.

VARIABLES

Input Variables (default values):

Parameter Variable Value
0Scale100.0
1Screening Length (Å)50.0
2Incoherent Background (cm-1)0.0

USAGE NOTES

The function calculated is:

Lorentz Equation 1

where I0 is the scale factor and corresponds to the scattered intensity at q=0.0.

REFERENCE

TEST DATASET

This example dataset is produced by calculating the Lorentz using 300 data points, qmin = 0.001 Å-1, qmax = 0.7 (Å-1) and the above default parameter values.

Lorentz