I think you need to start with the shortest paths first and then work your
way to the longer pt-Pt paths. It is likely that there is some Pt-Pt
there but it is swamped by Pt-O and others as well. The first thing you
need to figure out is if the peak at 1.1A is real or not. You might want
t
Hi Carlo,
You seem to be right. I try to do the fit in my notebook, which has the same
Windows and Services Packs, and worked. I want to know why? Is it possible
to resolve this?
You right too assuming that there is an H2 adsorbed. In reality, this is a
sample catalyst of 1%Pt supported in Al2O3 t
Hi Kleper:
There is a single Pt-Pt path in your fit. This is effectively a fcc Pt
distance of 2.77. I see several problems:
This spectrum has distances which are much shorter than 2.77 and so I
would expect that this single path would not be a very good fit. I am not
sure if the peak aroun
Thanks.
I looked at it, and everything works--there's no corrupted data; it's
just having a hard time getting a decent fit. If you guess multiple
parameters you'll see it does manage to find some kind of fit, but
it's poor.
Your data and background subtraction look acceptable, so that leave
OK, but the problem doesn't seem to be with the data; I'd guess it's
with the path somehow. So you should save the Artemis project you used
to generate the log file you sent us, and send that. (In other words,
just follow the same steps you did before, but use Artemis to save the
project.)
But Scott, this data was that I treat in Athena to begin the treatment in
Arthemis. I don´t have the Artemis project.
2009/1/13 Scott Calvin
> That's an Athena project, Kleper. I think we need the Artemis project
> (.apj file). Nothing wrong with the data itself, though, as far as I can
> see.
That's an Athena project, Kleper. I think we need the Artemis project
(.apj file). Nothing wrong with the data itself, though, as far as I
can see.
--Scott Calvin
Sarah Lawrence College
On Jan 13, 2009, at 5:31 PM, Kleper Oliveira Rocha wrote:
Hi Bruce,
I send to you the project.
2009/1/
Hi Bruce,
I send to you the project.
2009/1/13 Bruce Ravel
>
> Hi Kleper,
>
> But your reduced chi-square is only 10^35. That seems like a pretty good
> fit... ;-)
>
> There is obviously a numerical problem, corrupted data, corrupted project
> file -- something like that.
>
> Can you send me t
Hi Kleper,
But your reduced chi-square is only 10^35. That seems like a pretty good
fit... ;-)
There is obviously a numerical problem, corrupted data, corrupted project
file -- something like that.
Can you send me the project file?
B
> Please, help me. When I try to do any fit in Arthemis,
Hi Kleper,
It looks a little to me like you don't actually have any paths
included in the fit, or perhaps the path is defective (all zeroed out,
or something like that). If you attach the project file, it will
probably be easy to tell.
--Scott
On Jan 13, 2009, at 5:13 PM, Kleper Oliveira R
Hi all,
Please, help me. When I try to do any fit in Arthemis, setting all
parameters unless one, been this one any of the parameters, the fit gives
for the answer -1. +/- 0.00 like example down. What is happening?
Independent p
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