I can help if I can look at the pattern. A copy of the raw data would be
helpful.
Regards,
Ed
On Thu, Jun 8, 2023 at 4:09 AM wrote:
>
>
> Hi,
> I am performing some XRD data collection on some samples of steel and I am
> found some wired result. As I am not an expert on this kind of samples, is
Just curious, is the sample as prepared in the holder wider than the beam
width at 10 degrees where you start the scan? This is a common issue that
not many realize that for quantitative analysis the diffracting volume is
constant provided the sample is larger than the beam in the tube and
detector
It depends on how the peak position is determined, if the position is for
the Ka1, use that value, if the position used is for the whole peak
comprised of both Ka1 and Ka2 use the weighted average.
Cheers,
Ed
On Mon, Jan 7, 2019 at 3:05 PM Nelsonsd wrote:
> Dear colleagues
>
> I have a small qu
CJ,
When doing any quantitative analysis based on intensity one must ensure
that the sample is larger than the diffracting volume; i.e. the area of
projection is larger at lower angles while the depth of penetration
decreases. Make sure the sample is long enough and thick enough. When doing
this t
How was the Pellet made? Could be residual stresses on the surface.
Cheers,
Ed
On Fri, Dec 8, 2017 at 9:35 AM, François Goutenoire <
francois.gouteno...@univ-lemans.fr> wrote:
> Dear Rietveld users,
>
> We observe an unusual asymmetric peak shape on pellet and not when the
> sample has been cru
There should be no damage but you may see a slit change in color where the
beam hits the sample, a temporary change in the color center. I suggest
running your generator at 45 kV and 35 mA you will get more intensity.
Cheers,
Ed
On Sun, May 21, 2017 at 12:21 PM, Shay Tirosh wrote:
> Dear Rietve
Try Pearson's Crystal database on CD he also has one published Pearson's
handbook of crystallographic data.
Regards,
Ed
On Mon, Jun 13, 2016 at 9:29 PM, Rachid Abkar
wrote:
> I need please atomic position for both structure Ba2TeO4 space group
> pbcn(60) and Ba2TeO5 Space Group: P41212 (92)
Nelson,
The easiest way to understand this is to insert values for the crystallite
size and look at the FWHM it produces. The limit is the resolution of the
FWHM measurement on your instrument, often based on step size. You can also
determine the minimum FWHM you can differentiate and solve for th
you have obviously figured out.
Hope that helps,
Ed
- Original Message -
From: [EMAIL PROTECTED]
To: "Edward Laitila" <[EMAIL PROTECTED]>
Sent: Thursday, November 13, 2008 12:26:20 AM GMT -05:00 US/Canada Eastern
Subject: Re: Suggestion about software(s) for size pr
Stephen,
The peak profile gives information about the crystallite or coherent
diffracting domain size along with microstrain. You cannot not get a grain size
unless the crystallite size can be related to the grain size from knowledge of
the microstructure. The crystallite size can be estimated
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