Sorry my last post was not intended. My present question for the group is if anyone knows the relative quantum efficiencies of photomultipliers such as those...
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...
Feb 1, 2005 10:10 pm
2926
Buwah-ha-ha-ha! Tremble all you low-level radioactive miscreants! At great personal danger and immense financial cost, I have finally obtained the _First!_ in...
Don't you mean drop the Feistaware and step away from the Geiger counter? Ok Mister, DROP the gieger counter, and step away from the Fiestaware! ... Don't...
No, If you dropped the fiestaware we would get pieces of radioactive dishes in our eyes, skin etc.. ... __________________________________ Do you Yahoo!? ...
Hi--I'm looking for a Canberra 8075 ADC to try with Craig Brown's interface (in the files). Does anyone know where I can find one and/or what the current...
We've talked a lot about lead shielding on these pages over the last few ears. My first experiments surprised the heck out of me as to how much lead was needed...
If you are going to do your own casting, wheel balance weights make a good source of cheap lead alloy. You might be able to get them for free by asking at a...
Wheel weights are good, the steel clips float on top when the lead melts, easy to skim off. Linotype metal used to be common, probably not any more.Make sure...
Interesting, I can confirm this. I flew into SFO from London this afternoon. Immigration "marked my card" so I got pulled over by Customs. No worry realy, I'd...
It seems to me that concrete would be much easier, cheaper, and safer than casting homemade lead shielding, though a 5 times larger thickness is required....
... Tack some wood together with a hot glue gun to make a mold. Place a bag of lead shot on it and push it in to all the corners. Suck the air out of the bag...
Yes we have such a tank, and keep the water at a soothing 101 degrees F! It takes a lot of water, 18" if I remember. Poured concrete is used as you suggest,...
Shot is good too, but not as good as solid. I keep it in the original bag, and use it to cover tube base and cable entry into the SLUGGO shield. Geo ... safer ...
I have an E-120 GC calibrated in CPM and mR/Hr on the meter face. Under what conditions is the mR/Hr valid? Is it for the backside of the probe (an HP-260),...
Hi Kevin! The meter scales on your E-120 are for the "Hot dog" type probe with a rotating beta shield for which the sensitivity to Gammas only of Co-60 is...
And of course the mR/h factor will vary depending upon the energy level of the Gamma radiation being looked at. Calibration charts called "energy dependance...
Hi all, I reviewed my lab notebook and the lowest noise jfet that I've tried in the PIN diode preamp ckt. is the 2N5458. You can buy these at Jameco (...
Lead shot is made up of spheres and all spheres have a packing fraction of 0.707. There is some flattening so the packing fraction is not exact. It does not ...
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...
Feb 5, 2005 4:56 am
2958
Do I understand correctly that to use lead shot then the thickness should be increased 43% over solid lead to equal? This seems like an easy solution to make...
I've recently acqquired an almost pristine condition PRI model 112. I understand it was used by the medical profession for scannning brains for radioactive...
Hello every one I have a coulple of quick questions regarding scint. use on my Victoreen cdv-700 model 6b. First question: on the leni conversion if you add...
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