MODEL

TeubnerStrey

AUTHOR/MODIFICATION

Steve Kline 06 NOV 1998

Alan Munter 08 July 1999, converted to Java

APPROVED FOR DISTRIBUTION

DESCRIPTION

This function calculates the scattered intensity of a two-component system using the Teubner-Strey model.

VARIABLES

Input Variables (default values):

Parameter | Variable | Value |
---|---|---|

0 | Scale (a2) | 0.1 |

1 | c1 | -30.0 |

2 | c2 | 5000.0 |

3 | Incoherent Background (cm^{-1}) | 0.0 |

USAGE NOTES

The returned value is on an arbitrary scale.

the function calculated is:

where the correlation length (the dispersion of *d*) is:

and the quasi-periodic repeat distance is:

Parameter[0] (a2) acts as a scale factor, taking note that it is in the denominator and will affect the magnitude of c1 and c2.

REFERENCE

Teubner, M; Strey, R. *J. Chem. Phys.*, **1987**,
*87*, 3195.

Schubert, K-V.; Strey, R.; Kline, S. R.; and E. W. Kaler *J.
Chem. Phys.*, **1994**, *101*, 5343.

TEST DATASET

This example dataset is produced by calculating the TeubnerStrey model
using data points, *q*_{min} = 0.001 Å^{-1},
*q*_{max} = 0.7 (Å^{-1}) and the above default
parameter values.