DOSIMETER / GEIGER COUNTER
DOSIMETER / GEIGER COUNTER
Geiger counter is an instrument used for detecting and measuring ionizing radiation. Also known as a Geiger–Müller counter, it is widely used in applications such as radiation dosimetry, radiological protection, experimental physics, and the nuclear industry. It detects ionizing radiation such as alpha particles, beta particles, and gamma rays using the ionization effect produced in a Geiger–Müller tube, which gives its name to the instrument.[1] In wide and prominent use as a hand-held radiation survey instrument, it is perhaps one of the world's best-known radiation detection instruments.There are two types of detected radiation readout: counts or radiation dose. The counts display is the simplest and is the number of ionizing events detected displayed either as a count rate, such as "counts per minute" or "counts per second", or as a total number of counts over a set time period (an integrated total). The counts readout is normally used when alpha or beta particles are being detected. More complex to achieve is a display of radiation dose rate, displayed in a unit such as the sievert which is normally used for measuring gamma or X-ray dose rates.
Few examples of vintage dosimeters
In shtf situation dosimeter is a must have tool. Recently many new EU member countries naively quit funding domestic early warning civil defence radiation measuring services and went under unified European radiation alarm system. You can check European radio-logical maps here> https://remap.jrc.ec.europa.eu/Simple.aspx
However in a crisis situation you can always expect slow and inadequate response of centralized agencies. Best option is to have your own measuring apparatus or two so you can check and compare results. Cheap solution is to buy used army-surplus vintage device from trusted source but than you must to have way to check measuring results with calibration source or with a new calibrated device.When and if you buy old vintage dosimeter you have to be shore that it has good Geiger–Müller tube.This part is easily available from army surplus sellers. Also most of old analogue devices have up to 30% +/- results when measuring low level radiation ,so new and digital device is better option.
The GAMMA-SCOUT Geiger counter is the best-known radiation measuring instrument in the world and is already the gold standard among experts and hobby researchers.The Geiger counter GAMMA-SCOUT is the only hand-held measuring instrument on the German market that can measure alpha radiation in addition to beta and gamma radiation. Radon belongs to the alpha emitters, which is why all GAMMA-SCOUT models can reliably determine radon gas concentrations.This new top device has price around 500$.
You can read entire blog covering Fukushma/Japan Nuclear Plant radiation drama here>https://dgr4quake.wordpress.com/ibaraki-radioactivity/
Notable mention are Thorium nets for camping gas lamps (for testing purposes) which EU forbid few years ago
Comments
Post a Comment