Re: Low energy NaI detection

[William V Lipton <liptonw@dteenergy.com>]

Maybe I'm missing something, but NaI detectors, being hygroscopic, have to
be "canned," and  this cladding will attenuate low energy photons, even with
low noise electronics.  SiLi detectors are generally the instrument of
choice for low energy photons.

The opinions expressed are strictly mine.
It's not about dose, it's about trust.

Bill Lipton
liptonw@dteenergy.com

Neon John wrote:

> I was asked one of those simple little questions today that just
> kinda stopped me cold and made me draw a blank.  The question was,
> can a NaI/PM detector be used for 0.5 keV X-ray detection?  My
> impulse answer was no.  My experience tells me that conventional
> detectors as used in effluent monitors typically have a 50-60 keV
> equiv noise floor.  But before I answered the question with a
> possibly wrong answer, I thought I'd ask this esteemed list :-) to
> see if there is some technique I'm not aware of.  There's no
> particular context to this (vacuum, exposed crystal in a dry box,
> etc.), just kind of a blue-sky question.
>
> Thanks,
> John
> --
> John De Armond
> johngdSPAMNOT@bellsouth.net
> RDS Inc.
> Cleveland, TN
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