Just to clarify Cesium 137 is a Beta and Gamma emitter right? And Cs137 is highly radioactive only when in high amounts right? So thats why you are allowed to...
Not sure about the exact readings, i dont have any cesium, but im sure others here do. As for the radiation increasing, you betcha. And radioactive in high...
hello my name is Dave Im new here. Im from Burlington Ontario. I picked up my cdv700 about 2-3months ago. My girlfriend got it for me for my birthday. But I am...
A question of semantics! The "radioactivity" of a substance is determined by physical laws, regardless of quantity. (specific activity) The -amount- of...
That's a good point John, and I think it is often overlooked or misunderstood. Any isotope will have a certain energy of radiation, that never changes if there...
Hello everyone. I'm looking for a radioactive but not highly radiactive (something that reads less than 500 c/m that could be stored at home) source. Anyone...
Chris, Your package is better, I uploaded it and checked it out this morning. I really liked the visable spectrum part of your software. For some reason I...
It used to be just for Macs, the Windows and Linux versions are still new! ... -- ... Chris Smolinski Black Cat Systems http://www.blackcatsystems.com...
I found an interesting website that deals with radioactive materials disposal. heres the site address: www.rsoinc.com Some good info there, plus they sell...
I know you guys have all most likely seen the website where the girl drives around in the radioactive zone around the nuclear plant catastrophe it the...
Just thought you guys would find this interesting. I have one of the NukAlert Dirty Bomb detectors/early warning device and I wanted to test it. Luckily my...
Since thorium radioactivity of any specimen changes with time, it is best to keep them in a tightly sealed glass jar. Small sample specimen jars are ideal. ...
Vaseline glass (AKA Uranium Glass or Canary Glass) can be a good Low Level Check source too. Pieces will range from 2-3X background on up to several hundred...
Hello everyone. I'm looking to get a CDV 705. Does anyone have one they'd be willing to sell/get rid of? It doesnt have to work, as I can fix it. A model 1 or...
Well first of all, if you have a radium check disk you are lucky. I havent found any for sale. Second radium 226 has a halflife of 1602 years, so I doubt it...
Well.......yes and no. "Radium" has a chemical element meaning, AND a vernacular (sloppy) meaning. Unfortunately, it was common (years ago) to include other...
It's Possible that it was a shorter lived isotope, it says Radium D + E, a designation for products of Radium Decay, Pb 210 has a 22 year half life, and some...
Hi Dave, Sorry to hear you're having problems with the ENI. There probably are several things happening. I suspect that your unit isn't regulating probably,...
... materials ... As Ortec says: "The thickness chosen for the principal shielding material depends on the required attenuation of gamma rays of a specific...
Dave, One further thought: These units use a circuit that inverts DC to AC at high frequency. That's probably why you're hearing the whine. It's actually a...
While we're on check sources again.... The 'hottest' check source I ever came across is the type that was included with Sears "Tower" Geiger counters, but not...
Another shameless plug for my web site: http://www.gothotrocks.com/website/pages/Aut-P1.htm About half way down the page are some Lucite disks. Activity...
... I missed the discussion first time around, I'll read the archives. My CDV-700 ENI 6b (uncalibrated) indicates about 1500CPM on the test source with the...
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