28.1.22 CCE

Function

y=y_0+A[e^{-\frac{(x-x_{c1})^2}{2w}}+B(1-0.5(1-\tanh (k_2(x-x_{c2}))))e^{-0.5k_3(|x-x_{c3}|+(x-x_{c3}))}]

Brief Description

Chesler-Cram Peak Function for use in chromatography.

Sample Curve

CFF Image068.jpg

Parameters

Number: 9

Names: y0, xc1, A, w, k2, xc2, B, k3, xc3

Meanings: y0 = offset, xc1 = center, A = amplitude, w = half width, k2 = unknown, xc2 = center, B = amplitude, k3=unkown, xc3=center.

Lower Bounds: w > 0.0

Upper Bounds: none

Script Access

nlf_cce(x,y0,xc1,A,w,k2,xc2,B,k3,xc3)

Function File

FITFUNC\CHESLECR.FDF

Category

Peak Functions, PFW, Chromatography