Im trying to get on of these NE St-6's working I have posted pictures of the unit and the connectors. I dont know much about these units. I am trying to use a...
Two detectors are generally used, along with a coincidence detector. This setup looks for one event that affects both detectors at the same time, and ignores...
... was ... ( ... * Every engineer will eventually face ill-documented apparatus written in a poorly translated asian language. Sometimes consumers get this...
Not sure who to ask, so this sounded like a group question. I know that the old ionization chambers used electrometer tubes. There are really high impedance...
... Ultra low input bias current opamps are generally used. The AD549 is one such opamp that is often used. -- ... Chris Smolinski Black Cat Systems ...
Chris is correct about the AD549. I'm doing this from memory, but I believe that is the really high impedance, high priced IC. They have a few others (search...
Ok, who knows about the relationship between X-ray machine KeV ratings, tube currents and the resultant X-ray photons? I'm interested in quantifying the output...
I think a good ion-chamber using a vibrating/switched capacitance type probe pickup would be ideal. Second would be a cutie-pie. Search Victoreen 440-RF/C ...
Also check out the National Semiconductor "low input bias current" opamps. I don't have part numbers handy, but some are rated in the femtoamp range (xE-15)....
I looked up the PN of the Nat. Semi. part: LMC6001 http://www.national.com/pf/LM/LMC6001.html#Datasheet Cheapest version is $1.50 in quantity. I have some...
The TSA HHD440 is a complex instrument that has a computer inside, and a nice large block of plastic scintillator with integral PMT. Recently I was able to get...
Hello, This email message is a notification to let you know that a file has been uploaded to the Files area of the GeigerCounterEnthusiasts group. File...
GeigerCounterEnthusia...
Jan 5, 2005 4:03 am
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... Jim Ziegler, formerly at IBM, has written a lot of information on cosmic ray cascades. His best overview is available online at: ...
... detectors is ... plastic ... simple ... or MCA ... AFAICS, you wouldn't need NaI, nor a SCA or MCA. Plastic may be less useful than NaI for energy...
What does everyone think about the Gamma-Scout geiger counter?? Keep running across it on the net and looks interesting as a general- purpose detector. Not...
Excellent unit. Mainly a dosimeter I think. I have one. Not as versitile as the Blackcatsystems units by far for science use, but it is a good pocket...
Does anyone have a handle for a CDV715 or any of the similar models laying around that they would part with. I want to put it on a CDV700 because I will not...
Hello! I'm curious; do you have (or can you recommend) probes that would go with this device (LENi) so that I can specifically measure the amount of Alpha,...
Geo, The recent posts on Radiobarite strike up an interesting question, reducing the amount of X-Ray fluorescence emmited by Al sheets. Can we as hobbyists be...
... One common trick is to use several layers, of decreasing atomic number. For example: Lead Tin Copper Aluminum Plastic With the lead nearest the source of...
hi ,group barium comes from barite ore I think??I dont think it comes from the radioactive barite type ore ??? like I tested with a blackcat GM-10 last tues...
As for the Barium Milkshake it is a contrast medium for old fashioned abdominal X-Rays to add contrast to the digestive track. Doesn't taste to good either,...
Chris is quite correct, that "graded" shields are often used to reduce the x-Ray generated by the shielding material when they are irradiated. This irradiation...
I have looked all over but not found what is being done to make the reset push button work on the some of the LENi counters I see in the file section. I...
So if a sheet of Al is thick enough, it will sheild its own X-Rays, while a thin sheet or two will exhibit X-Ray fluorescence. Guess Reynold's Wrap is only...
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