Title: Message
Alan,
(i) but a sum of two Lorentzians is not sharper
than the sum of two pVs (Voigts)?
(ii) We fitted the exact size profile caused
by the lognormal distribution by a pV (for low lognormal dispersion) or by a sum
of maximum 3 Lorenzians (for large lognormal dispersion).
Bob,
A nice math. description amenable to RR exists, take a look at JAC(2002)
35, 338-346.
Nice because the size profile is described by a pV (at regular lognormal
dispersions) or by a sum of maximum three Lorentzians (at large lognormal
dispersions - those 3% that Alan spiked about). The
Dear Nicolae,
I will comment only upon your last statement because the limitations of
your modeling are clear.
Well, I don't know where from you taken these formulae
but I observe that for spheres of equal radius, then zero dispersion,
you have:
sigma(D)=5D/4, different from zero!
First
