Cebr3 problem

Scintillation crystals, PMTs, voltage dividers etc...
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luuk
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Cebr3 problem

Post by luuk » 12 Aug 2022, 22:36

Hi all,
I have a small document about some problem I saw with CeBr3 crystal.
If interested pleae read the pdf.
Luuk
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CeBr3 problem.pdf
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Sesselmann
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Re: Cebr3 problem

Post by Sesselmann » 16 Aug 2022, 12:05

Luuk,

It was painful just reading your report, I can't imagine how the client must feel when his 2x2x2" CeBr3 turns into a pile of dust....

Steven

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NuclearPhoenix
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Re: Cebr3 problem

Post by NuclearPhoenix » 17 Aug 2022, 07:12

Hi Luuk,

that was a very interesting and also shocking read. Do you know why this happens specifically with CeBr3?

Matthias

luuk
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Re: Cebr3 problem

Post by luuk » 18 Aug 2022, 04:57

Hi Steven,
Yes and it was not one but 3 detectors, but these things happen.

Hi Matthias,
I don't know why it why it happens with these crystals and is not just CeBr3 but also LaBr3 and probably also with other high resolution crystal.
Luuk

James Luck
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Re: Cebr3 problem

Post by James Luck » 19 Oct 2022, 13:04

Oh F*ck just ya,
a strange thing i never thought about.

-Luck
James luck
Chicago Ill, USA.
Hobbyist, primary meter: refurbished GR-135 & Ludlum 9.
Mostly detection than identification.

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Madmax
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Re: Cebr3 problem

Post by Madmax » 14 Feb 2023, 15:15

Hi Luuk,
>The oxidation from NaI(Tl) can be removed simply by first letting the crystal dry

What do you mean in "let crystal dry"?
Thanks!

Maxim
Regards!
Maxim, ATOM project, Moscow(RU)-Queretaro(MX).

luuk
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Re: Cebr3 problem

Post by luuk » 16 Feb 2023, 07:01

Hello Maxim,
To dry a NaI(Tl) crystal you will need a dry-box or dry-room with a humidity <3%.
If you look in previous post I wrote I think there is more info on refurbishing a crystal/detector.
About your questions about specific materials used to glue, couple or seal crystals all that information is unfortunately part of; Company Confidentiality.
Luuk

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