Re: 6 KeV x-ray monitoring

["baumbaug@nosc.mil" <baumbaug@nosc.mil>]

        Dale,

        The other suggestions have been pretty "right on" as far as
measuring exposure or dose, but first you have to find out where your
"leakage" is coming from. I have had many instances where I have tried to
find an exact place where a piece of machinery (XRD/SEM/XRF etc.) has
developed a low energy x-ray leak. I have found that I can use a Ludlum
survey meter with a 44-3 low energy scintillation probe (sorry to mention a
specific manufacture here) to find my leak (be it primary or scatter) and
then I can either measure the leak (for exposure or dose rate) with a ion
chamber (unless it's too columnated) or TLDs like Ron suggested...

        Hope this helps,



        Joel

At 04:43 PM 8/6/97 -0500, you wrote:
>Dale --
>
>You can block off the primary beam with Pb, and measure the leakage with
>TLD.  Call me if you ish to discuss further.
>
>Ron
>
>At 04:08 PM 8/6/97 -0500, Dale E. Boyce wrote:
>>Folks,
>>
>>I need a recommendation for an instrument to measure leakage from a
>>6 KeV x-ray machine.  The researcher who is using the machine would like to 
>>be able to monitor for leakage.  So I don't think he wants an instrument
>>to do anything but measure exposure or dose.  Anyone with experience
>>at this low energy, I appreciate your suggestions.
>>
>>Thanks, Dale
>>
>>
>
>
>
Joel T. Baumbaugh (baumbaug@nosc.mil)
Naval Research and Development (NRaD)
San Diego, CA., U.S.A.

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