Jim, look on ePay for Eberline MP-1, MP-2 and Ludlum 500 series. Geo ... From: "Jim" <jameskhill@...> To: <GeigerCounterEnthusiasts@yahoogroups.com> ...
... Bill Beamon's circuit, for example, gives two points per decade, say 150 and 300CPM. More than two cal points per range aren't really necessary as most...
Jim, I've got one most of the way figured out but I've got a little problem with how to encode the switch so that the integers from 1 to 10 will work. What I...
I'm wondering if there are interesting experiments that could be done with a PMT coupled to the eyepiece of a telescope, and pointed skyward (at night). My...
Doug, you are looking for a Multichannel Scaler (MCS). Like a Stanford Research Systems SR 430 http://www.thinksrs.com/products/SR430.htm for big bucks, or...
I just bought one of these on e*ay. It is a PMT and HV supply in a stainless steel tube. Input power is +-12V (only 18 mA!), and there is a voltage-control...
... Do you have any idea where I could find the crystal? Maybe I should just build that one and be done with it. I tend to spend too much time thinking about...
Dear Dud, Thanks for your info which I appreciate. I am looking for Gravitational waves and although they have a tiny amplitude there is a small chance they...
... I got mine from Digi-Key, but I'm sure lots of places sell that one. Also, if you're using a full scale of 10 (as opposed to 300 like the CDVs), just pick...
Douglas, Great experiment! Don't you have to be concerned that what you attempting to measure might also effect the device you're trying to measure it with? ...
Pete, those are really nifty. The RANGER PLUS isotope analyzer uses on like that coupled to a PMT. Works great. No idea what the suffix means, they make a ton...
I have assemble together the whole kit of parts in a kit for $15.00. Unfortunately I don't have the kits together at the moment. Geo ... From: "Jim"...
Doug, also check out http://physics.berea.edu/~lahamer/Mossbauer.html to see the Mossbauer Effect. As Dudley mentioned, some MCA's will do MCS and also...
... It would be very cool to capure a pulsar with your PMT telescope Just a few thoughts: -You could me making a distance measuring instrument by using a laser...
Hello. I am looking for some economical recommendations for a device that would tell me whether my living environment has harmful levels of radiation. I...
... In software, divide the sky image up into small square segments. Record as many sky images as you can like a movie. For each segment, compute the...
armytransplant, Your question skates along a topic that is not permitted on this board; radiation dose to humans and effects. That said, I would say the...
Most modern telescopes focus the light they collect onto a charge-coupled device just like the one in your digital camera. It consists of an array of...
Two projects that I would like to try some day -- 1) Connect a PMT to an all sky telescope (basically looking down onto a convex spherical mirror that gives...
Sorry -- didn't know that skated near unpermitted territory. I'm new here. Just trying to figure out if any of those devices are really good for people who...
Dear Bill, I don't think so as my theory is that nuclei that under normal conditions do not disintegrate are unlikely to do so by small distortions of space....
Very interesting. Thank you. Douglas Dr. Douglas K Benn NOTE: This communication may contain information that is legally protected from unauthorized...
Hi, one option is to count the output of the existing meter with a frequency counter, ormore accurately a universal counter timer. These can be had with hpib...
Douglas, Very interesting project ! I was just reading a report on variation of decay rates. Two two laboratories are reporting that the decay rates of a...
unfortunately, the disintegration rate is already a random number. No two of the counts will be the same , normally. Now, how do we determine hat causes one...
GWs have a cyclical nature so one is looking for periodic increases/decreases which are greater than the random variation. Douglas NOTE: This communication...
I agree with bill's comments on equipment - for your level of concern, a current CDV-700 w/pancake (contamination probe) or G-M tube would givr you the...
As far as a handheld utility type meter, I recommend on that has an interchangeable probe, plus a pancake or other thin mica window probe as the main detector...
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