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Low cost reliable dosimeter for nuclear fallout survival?
.RC.:
There is a seller in Ukraine that sells radiatio0n detection tubes and what not on ebay. https://www.ebay.com/sch/i.html?_ssn=dosimeters_radiometers_counters&store_name=dosimetersradiometersdetectors
I bought a SBM-20 geiger tube based kit from them years ago. Plus I have an alpha, beta, gamma detecting tube only here I bought from them, but not yet done anything with.
jonpaul:
Just see this topic. Perhaps misconceptions...
1/ Dosimeter is integrated flux of particles over time, eg a film badge or Lauretsen electrometer.
2/ Geiger counters are for Gamma radiation and need a very delicate and special tube for Alpha.
3/ Nuclear device fallout and prompt radiation is Alpha particles, Beta Rays and Gamma rays.
Detection of each differs.
4/ Pancake probes and scintillators use a doped plastic or zinc sulfide sensor with PM tube to detect alpha particles on a surface. Typically used in the Services to detect leakage of nuclear devices or power plants eg in submarines.
Save time and money .....first read a bit on nuclear radiation, dosimetry, and detectors before proceeding.
You cannot get ..cheap..accurate..capable of detecting dangerous radiation...DIY.
5/ 1950s Cold War had the USA Civil Defense purchase 100 of thousands of Lauritzen dosimeters and chargers.
Easily found on epay, $30..100 some may still work. Needs a 100V variable DC charger.
Look for Bendix or Victoreen CD V-750 Charger l Dosimeters 742 etc.
Stay safe!
From an optimist in the nuclear age
Jon
PS: Dr Strangelove 50 yeas ago
5U4GB:
--- Quote from: .RC. on February 10, 2024, 08:49:59 am ---I bought a SBM-20 geiger tube based kit from them years ago. Plus I have an alpha, beta, gamma detecting tube only here I bought from them, but not yet done anything with.
--- End quote ---
You used to be able to get SBM-20s cheap as chips before Fukushima and then suddenly the prices skyrocketed overnight. Are SBM-20's still being manufactured now or is it all old Soviet-era stock? That's why I mentioned the M4011, and more recently J30x's, they seem to be the modern equivalent of the jellybean SBM-20's.
If you want to get fancy without breaking the bank, there's a pocket gamma-ray spectrometer made by a group called RadiaCode that uses a solid-state CsI:Tl detector so you don't have to mess around with photomultipliers and multichannel-analysers, you give up a bit of sensitivity in exchange but it's nicely portable and they're constantly updating the app that provides the readout and analysis.
Kleinstein:
The cheap meters are by far not sensitive enough to check food to a sensible level. If really afraid, better get a reserve stock of some food, bottled water.
For the external contaminations, this is usually the lesser problem and the obvious points where particles accumulate are know even without a meter. So even a working meter is of rather limited value.
Avaalon:
--- Quote from: .RC. on February 10, 2024, 08:49:59 am ---There is a seller in Ukraine that sells radiatio0n detection tubes and what not on ebay. https://www.ebay.com/sch/i.html?_ssn=dosimeters_radiometers_counters&store_name=dosimetersradiometersdetectors
I bought a SBM-20 geiger tube based kit from them years ago. Plus I have an alpha, beta, gamma detecting tube only here I bought from them, but not yet done anything with.
--- End quote ---
I fact did contact ukrainian Ebay seller and he told that chinese Geiger counters are not sensitive enough. But not sure if he wasn't just trying to push his product. He had some old looking, soviet Geiger counters. SBM-20 is just a tube, what is ready Geiger counter I could purchase?
Here is a list of dosimeter he recommended:
Now to the essence of your question.
If you want the simplest possible dosimeter, then I recommend you the IRA-01 dosimeter:
https://<a>www.ebay.com/itm/195745152485<;/a>
Or keychain-dosimeter Biri:
https://<a>www.ebay.com/itm/195729586117<;/a>
If you want a more advanced dosimeter with an LCD screen, then I recommend you:
Master-1 (with one counter):
https://<a>www.ebay.com/itm/196052505949<;/a>
Bella (with one counter):
https://<a>www.ebay.com/itm/204286573017<;/a>
Jupiter (with two counters):
https://<a>www.ebay.com/itm/195838368013<;/a>
Anri Sosna (with four (!!!) counters):
https://<a>www.ebay.com/itm/204552612344<;/a>
If you want a dosimeter that will definitely help you survive a nuclear war, then I recommend you a military metal dosimeter ((with four (!!!) counters):
https://<a>www.ebay.com/itm/204282870751<;/a>
If you want a dosimeter that can measure both gamma and beta radiation and is quite cheap, then I recommend Pripyat:
https://<a>www.ebay.com/itm/204277500290<;/a>
And if you want a dosimeter that measures both gamma and beta radiation, calculates the accumulated dose and sounds an alarm when there is a dangerous level of radiation, then I recommend you Terra-P plus:
https://<a>www.ebay.com/itm/204259641715<;/a>
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