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tech / sci.electronics.design / New monochromator optics for tender X-rays

New monochromator optics for tender X-rays

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From: pNaonStp...@yahoo.com (Jan Panteltje)
Newsgroups: sci.electronics.design
Subject: New monochromator optics for tender X-rays
Date: Thu, 01 Dec 2022 05:59:56 GMT
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by: Jan Panteltje - Thu, 1 Dec 2022 05:59 UTC

Re: New monochromator optics for tender X-rays

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From: pcdhSpam...@electrooptical.net (Phil Hobbs)
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Subject: Re: New monochromator optics for tender X-rays
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by: Phil Hobbs - Thu, 1 Dec 2022 12:36 UTC

Jan Panteltje wrote:
> New monochromator optics for tender X-rays
> https://www.sciencedaily.com/releases/2022/11/221130114602.htm
>

"Tender X-rays"? Like the baby bear's bed, I gather. ;)

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
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http://hobbs-eo.com

Re: New monochromator optics for tender X-rays

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Subject: Re: New monochromator optics for tender X-rays
From: whit...@gmail.com (whit3rd)
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by: whit3rd - Thu, 1 Dec 2022 17:49 UTC

On Wednesday, November 30, 2022 at 10:00:19 PM UTC-8, Jan Panteltje wrote:
> New monochromator optics for tender X-rays
> https://www.sciencedaily.com/releases/2022/11/221130114602.htm

Looks like an expensive solution; mostly, silicon crystals are good for that
soft X-ray energy range, and have excellent precision because... the
stuff is mass-produced in single crystal form. I've done some work at
the high end of that X-ray range, and it did take us a few minutes to measure details
of the X-ray absorption spectrum. I wasn't also trying to image (scan a large area).

On the face of it, these are actually blazed gratings, which is a kind of (presumably etching)
tour-de-force starting with accurate photolithography.

Re: New monochromator optics for tender X-rays

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From: martin_r...@verison.net (Martin Rid)
Newsgroups: sci.electronics.design
Subject: Re: New monochromator optics for tender X-rays
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by: Martin Rid - Thu, 1 Dec 2022 20:27 UTC

whit3rd <whit3rd@gmail.com> Wrote in message:r
> On Wednesday, November 30, 2022 at 10:00:19 PM UTC-8, Jan Panteltje wrote:> New monochromator optics for tender X-rays > https://www.sciencedaily.com/releases/2022/11/221130114602.htmLooks like an expensive solution; mostly, silicon crystals are good for thatsoft X-ray energy range, and have excellent precision because... thestuff is mass-produced in single crystal form. I've done some work atthe high end of that X-ray range, and it did take us a few minutes to measure detailsof the X-ray absorption spectrum. I wasn't also trying to image (scan a large area).On the face of it, these are actually blazed gratings, which is a kind of (presumably etching)tour-de-force starting with accurate photolithography.

20kv and lower is very difficult to find a detector that's useful.
I'm sure artifacts in the air would show up at 5kv.

Cheers
--

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Re: New monochromator optics for tender X-rays

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Subject: Re: New monochromator optics for tender X-rays
From: whit...@gmail.com (whit3rd)
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by: whit3rd - Thu, 1 Dec 2022 21:22 UTC

On Thursday, December 1, 2022 at 12:27:34 PM UTC-8, Martin Rid wrote:
> whit3rd <whi...@gmail.com> Wrote in message:r
> > On Wednesday, November 30, 2022 at 10:00:19 PM UTC-8, Jan Panteltje wrote:
> > > New monochromator optics for tender X-rays
> > > https://www.sciencedaily.com/releases/2022/11/221130114602.htm

> > Looks like an expensive solution; mostly, silicon crystals are good for thatsoft X-ray energy range...
> > On the face of it, these are actually blazed gratings, which is a kind of (presumably etching)tour-de-force starting with
> > accurate photolithography.
>
> 20kv and lower is very difficult to find a detector that's useful.
> I'm sure artifacts in the air would show up at 5kv.

We used ion chambers; gas ionization isn't terribly compact or efficient,
but it IS nicely linear, with a bit of gas-mix control. Keithley got a lot
of our business with their low-current measure equipment.

Subject	Author
New monochromator optics for tender X-rays	Jan Panteltje
Re: New monochromator optics for tender X-rays	Phil Hobbs
Re: New monochromator optics for tender X-rays	whit3rd
Re: New monochromator optics for tender X-rays	Martin Rid
Re: New monochromator optics for tender X-rays	whit3rd