[ RadSafe ] Fwd: Looking for vendor for "hard xray" spectormeter calibration source.

[Amoling, Ronald]

I have worked with Atlantic Nuclear in Rockland, MA in the past to obtain radioactive sources of all kinds (even sources that aren't listed on their website).  Talk with John Anderson (Jr. and/or Sr.) at -
www.atnuke.com
781-828-9118


Ronald Amoling, RSO / EHS Manager 
American Science and Engineering, Inc. | www.as-e.com  
829 Middlesex Turnpike | Billerica, MA 01821 USA
Office +1-978-495-9012 | Cell +1-508-728-1348 | RAmoling at as-e.com


-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Ted de Castro
Sent: Monday, June 29, 2015 9:40 PM
To: The International Radiation Protection (Health Physics) Mailing List
Subject: Re: [ RadSafe ] Fwd: Looking for vendor for "hard xray" spectormeter calibration source.

Thanks Chris,

Actually they/I have an Indium spectrum.  Their interests is to energy calibrate the spectrometer and mentioned energies around 40 keV.  And in their discussions - they think of these as high energy.  I guess it what's you are used to - having worked 40 years with high energy accelerators and diagnostic and orthovoltage x-ray and Co-60, Cs-137 or
Ra-226 and alpha-n neutron sources ---- I have a different "high energy" 
experience.

Anyhow - what they want right now is a reference to a vendor who sells these sources - and they do want an Am.

I have yet to discern how large a source and can't get to work on their license until I have some idea what they will be getting.

Anyhow - right now - its the vendor I am looking for - SURELY - there are a few who see this list.

When I get more info on the spectrometer - then I can call that company and see what they recommend.  Right now I have the most info on the x-ray generator - just finished designing the interlock/safety/control system/enclosure and getting their state license.

ted de castro

On 6/29/2015 4:59 PM, Chris Alston wrote:
> Xray Ted
>
> Maybe when he says "hard", he means as nearly mono-energetic as possible.
> Like, with a *copper* anode, you get the k-alpha and -beta x-rays, at 
> ~ 8 and 9 keV.  Contrast that with the messy bunch of x-rays and a 
> gamma, we see from I-125 between ~ 25 - 35 keV.  If you give me a few 
> days, I can look up the similar, but uniquely different emissions from 
> indium.  Am-241 does have a very useful mono-energetic gamma photon at 
> 60 keV (~35% intensity), but it seems as though that would be too high 
> an E for what we can divine of his uses.  Why not call a company like 
> Rigaku (they're big in x-ray diffraction), and ask them how they calibrate their detectors?
>
> Cheers
> cja
> ---------- Forwarded message ----------
> From: Ted de Castro <tdc at xrayted.com>
> Date: Mon, Jun 29, 2015 at 1:58 PM
> Subject: [ RadSafe ] Looking for vendor for "hard xray" spectormeter 
> calibration source.
> To: "The International Radiation Protection (Health Physics) Mailing 
> List" < radsafe at health.phys.iit.edu> I looked in the journal and on 
> the website for vendor data and was shocked to see how few ads there 
> were.  This seems like something to be concerned about!!
> Anyhow - I need to refer a client to what he refers to as a "hard" 
> x-ray calibration source for an x-ray spectrometer.  They specifically 
> mentioned an Am source and are looking for energies in the couple of 
> 10's of keV (I don't usually think of that low an energy as "hard").
> I am trying to get more info on the spectrometer and its detector but 
> thought I'd start this query going now.  The x-ray source for the 
> analyzer is a high intensity Indium anode source - this may give you 
> some idea of what they want and is pretty much all I can say about it.  
> I think a vendor or user in the area would recognize the need.
> Thank-you
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