On Sun, 30 Nov 2008 17:27:54 -0700 (MST), "M. Warner Losh" <[EMAIL PROTECTED]> wrote:
>The thing that got me was the word 'really' in Bruce's statement. It >read like someone who had tried it, had limited success, but in the >end wound up believing that while possible, it wasn't really >practical. After thinking that, I couldn't imagine that somebody on >the list hadn't tried it for some reason or another over the years. Well, before my fire I had a gamma spectrometer based on an LN2 cooled HpGe crystal in my basement lab. Right beside it was a similarly cooled SiLi detector for alpha and X-ray spectroscopy. What can I say? I'm a nuke. that's what we do. I managed to save the Canberra MCA, though it's grossly obsolete now, there being little USB dongles that do the job these days. I have been coveting one of the later model HpGe detectors with the Sterling refrigeration pump. No more LN2 deliveries. Kinda pricey on a retiree's budget. One of those things that I've always wanted to do was to lash together a liquid air plant from, say, refrigeration parts. Never had the time and the funds at the same time. John -- John De Armond See my website for my current email address http://www.neon-john.com http://www.johndearmond.com <-- best little blog on the net! Tellico Plains, Occupied TN You can't turn [MS] shovelware into reliable software by patching it a whole lot. -Marcus Ranum _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
