Re: Survey Meter Response Time

[Chris Alston <alstonc@odrge.odr.georgetown.edu>]

Joel

I'd pose the question to Ludlum; if anyone has a definitive answer,
specific to one of their meters, it is they, I suppose. An instrument that
can integrate exposure might be a better choice. Also, I'm very curious to
know what sort of xray machine it is.

Break a leg
cja
alstonc@odrge.odr.georgetown.edu

At 11:55 AM 2/24/00 -0600, you wrote:
>
>I'm using an ion chamber (Ludlum9) to measure x-ray scatter.  The beam =
>is only on for 2 secs, and the meter response time (to 90% final =
>reading) is about 3 secs.  So, I'm reading low, but how low?  Does =
>anyone have a plot of response vs. time?  Are we looking at a hysteresis =
>curve here?  I figure I can calculate a correction factor for my survey, =
>from such a plot.
>
>Joel I. Cehn
>cehn@aol.com
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