Hi Helen, As an alternative, for a highly air-sensitive material, you might consider a small can that can be sealed under inert atmosphere. APS Sector 20 (now 25ID) had, and may still have, a small Be dome. You could use a small aluminium can,
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Hi Helen,

As an alternative, for a highly air-sensitive material, you might consider a small can that can be sealed under
inert atmosphere.

APS Sector 20 (now 25ID) had, and may still have, a small Be dome. You could use a small aluminium can,
with windows that are less permeable to air/O2/CO2/H20...e.g. Be sheet, diamond, maybe even graphite.
(not under vacuum), maybe even thin aluminium.

If you use a slotted holder for the sample, you can use that for alignment if you can't see the sample.

For shipping, a mason jar also sealed under inert atmosphere works well.

-R.

On 2025-03-22 12:16 p.m., Carlo Segre via Ifeffit wrote:
Hi Helen, We have had luck using a vacuum sealing system such as used for food. However the Polyethylene is subject to degradation under the beam so that wrapping with Kapton is helpful as well as double bagging it. Finally, if you keep it under
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Hi Helen,

We have had luck using a vacuum sealing system such as used for food.  However the Polyethylene is subject to degradation under the beam so that wrapping with Kapton is helpful as well as double bagging it.  Finally, if you keep it under Argon when transporting it to the beamline and then in a helium filled chamber, you should avoid the oxidation.

Carlo


--
Carlo Segre, Duchossois Professor of Physics
Illinois Institute of Technology
From: Helen Chen via Ifeffit <ifeffit@millenia.cars.aps.anl.gov>
Sent: Tuesday, March 18, 2025 8:05 PM
To: ifeffit@millenia.cars.aps.anl.gov <ifeffit@millenia.cars.aps.anl.gov>
Cc: Helen Chen <helen86@uw.edu>
Subject: [Ext][Ifeffit] Question about Air sensitive sample holder
 
Hello, Our group (Jerry Seidler) just started a project involving doing VTC and HERFD on Yb doped CrX3 material. They are thin small crystal sheets and are very air sensitive. We have tried encapsulated them between a layer of laptop tape and
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Hello,
Our group (Jerry Seidler) just started a project involving doing VTC and HERFD on Yb doped CrX3 material. They are thin small crystal sheets and are very air sensitive. We have tried encapsulated them between a layer of laptop tape and film, but after 12hr we see degradation due to air leaks. I am looking for some advice on air sensitive sample holder. What are some typical methods you use to deal with air sensitivity, especially for samples in thin sheets geometry?
Thank you


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