Date: Fri, 7 Apr 1995 14:38:14 +0000
Subject: Re: B and Mo problem
From: jdonovan@seismo.berkeley.edu (John J. Donovan)
Status: OR
>I have a user looking at B-Mo-Si; there is a severe problem that we
>cannot figure out re B and Mo. There is a nice peak at the B Ka peak
>position on pure Mo; Cameca's software suggests a second order Mo "Mc"
>line (what is that!) not too far away but I find no reference to it
>in the standard tables and texts. Anyone every handled this??? We tried
>differential mode with a tight window (1.0 v) and it still was there.
>Help!
>
My software shows a 1st order Mo M2-M4 line (1% relative intensity to Mo
La) at 68.9 angstroms. Since it is 1st order, PHA will NOT help. You need
my quantitative interference correction that I've offered repeatly to
Cameca (and published, see "An improved Interference correction..." in
Microbeam Analysis, 2, 23-28, 1993).
The improvement is a ZAF correction on the interfering intensity used for
the interference correction calibration. If you are analyzing B ka (large
absorption correction), you will need it!
Sorry to toot my own horn.
john
====================================================================
John J. Donovan jdonovan@seismo.berkeley.edu
MicroProbe Laboratory jdonovan@garnet.berkeley.edu
Room 455, McCone Hall
University of California Voice : (510) 642-5459
Berkeley, CA, 94720 FAX : (510) 643-9980