[GSAS-II] crystallinity on a fiber sample

[Beatriz Diaz]

Hi, Matthew,
I would suggest using an area detector, you would see the texture right
away. We have several at the CLS.
Cheers, Beatriz.


On Sat, Feb 17, 2024, 12:00 p.m. <gsas-ii-request at aps.anl.gov> wrote:

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>    1. Running %crystallinity on a fiber sample (Brown, Matthew)
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> Message: 1
> Date: Fri, 16 Feb 2024 18:03:46 +0000
> From: "Brown, Matthew" <matthew.brown at ubc.ca>
> To: "gsas-ii at aps.anl.gov" <gsas-ii at aps.anl.gov>
> Subject: [GSAS-II] Running %crystallinity on a fiber sample
> Message-ID: <e90ad8f039d845aea1cd1e43ab4cb648 at ubc.ca>
> Content-Type: text/plain; charset="utf-8"
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> All
>
> I?ve got an engineering user that wants to do Segal crystallinity index on
> their cellulose samples. However, their cellulose is fibers, not a powder,
> and I?m worried about texture biasing their results and turning them into
> gibberish. I?ve got access to two XRDs, one with an XYZ stage that can?t
> spin, but instead can randomly move the sample stage in the XY plane to
> expose more of the sample, and one with a traditional spinner. I was
> thinking of running the sample several times on each, and making sure the
> results are consistent each time. Does anyone have a better plan, or
> experience working with fibre samples I could use?
>
> Thank you so much
>
> Dr. Matthew L. Brown  (he/him, they/them)
> Lab Technician V (Chemistry, Crystallography)
> Office: 250-807-8365
>
> UBC School of Engineering
> 1540 Innovation Dr.
> Kelowna, BC
> V1V 1V7
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