Probe Software Users Forum

Hardware => Cameca => Topic started by: Ben Buse on February 21, 2017, 06:49:29 am

Title: Spreadsheet of sin theta values, background interferences
Post by: Ben Buse on February 21, 2017, 06:49:29 am
Hi,

I've finally adapted the JEOL l value spreadsheet for Cameca sin theta.

It includes correction for reflective index.

Using the excel filter - you can examine the range of interest and it gives relative position of interfering lines.

In the example below - looking at Fe KA1. Elements of atomic number <30, x-rays lines with intensity > 1% and LIF range 47000 to 49000 are shown. Mn Kb1 is seen to occur at -638

(http://probesoftware.com/smf/gallery/453_21_02_17_6_47_38.png)

Ben
Title: Re: Spreadsheet of sin theta values, background interferences
Post by: Ben Buse on March 02, 2017, 01:12:38 pm
I've just found that I was calculating sin theta wrong for the high order interferences - for I was using n*lamda - but in the xray table (as given in calczaf) the angstrom for high order interferences is the apparent wavelength (i.e. angstrom = n*lamda in table)

So I've corrected the calculation in the spreadsheet