Hi Matt,
I didn't know what kind of detector is on 5-BM-D beamline and what the
size of the beam is, so my answer was more general, and bases on my
experience from Hasylab. I have checked now: Canberra 13-element SSD and
15x5mm2 unfocused. So, I would follow your suggestion and start with
13-
Thank you so much!
This is the first time I tried to use ifeffit mailing list. I would have
never expected so many responses from so many scientists. I wish one day I
could be able to contribute back to this great scientific community as well!
Thanks again!
Mengling
On Thu, Sep 29, 2011 at 8:00
Hi Mengling,
2011/9/29 Mengling Yi Stuckman :
> Thanks for all the response! They are all very helpful!
> Just want to make sure that I get the information right and a few follow-up
> questions:
> 1. I'd better contact the beamline engineer to ask for the sensitivity for
> Tl.
Yes!
> 2. Fe fluor
Hi Dariusz,
Thanks, those are good suggestions. I was assuming that they'd use a
solid state (say 10+ element Ge) detector for concentrations at and
below 10 ppm.A large diode detector might work OK -- they can
often take higher total count rate at the expense of energy
discrimination. I'd
Thanks for all the response! They are all very helpful!
Just want to make sure that I get the information right and a few follow-up
questions:
1. I'd better contact the beamline engineer to ask for the sensitivity for
Tl.
2. Fe fluorescence interference could be decreased by adding a few layer o
Dear Matt,
this is very good introduction for fluorescence measurements on diluted
samples... Like a tutorial...
I just want to add small comments: as I understood the sample is an ash,
so maybe will be possible to condense it, e.g. press it into the pellet.
If there will be no possible to meas
Dear Mengling,
The basic issues are: will there be enough Tl fluorescence counts in
the detector, and will you be able to see a decent edge.From you
spreadsheet of concentrations, the elements that stand out are: Fe
and to a lesser extent Zn, and Pb.
The Fe and Zn will dominate the fluoresc
Dear Mengling,
I suppose you should contact beamline responsible and ask about beamline
limitations (intensity of the beam at Tl edge, detector sensitivity,
etc). Normally it is done before sending the project... Sample
preparation for fluorescence, in your case should be, in general, to
conde
Dear Ifeffit Community,
I am currently working on project "Evaluating Speciation of Thallium
in Coal Fly Ash". The project was accepted by APS and we will conduct
our measurement on beamline 5-BM-D.
My fly ash sample has Tl concentration ranging from 0.5ppm to 13ppm.
How can I know whether the sa
