Ads
related to: radon detector - how it works - youtube freediscoverpanel.com has been visited by 10K+ users in the past month
assistantking.com has been visited by 10K+ users in the past month
assistantsun.com has been visited by 10K+ users in the past month
Search results
Results from the WOW.Com Content Network
A typical radon test kit Fluctuation of ambient air radon concentration over one week, measured in a laboratory. The first step in mitigation is testing. No level of radiation is considered completely safe, but as it cannot be eliminated, governments around the world have set various action levels to provide guidance on when radon concentrations should be reduced.
Radon mixed with hydrogen entered the evacuated system through siphon A; mercury is shown in black. Radon was discovered in 1899 by Ernest Rutherford and Robert B. Owens at McGill University in Montreal. [48] It was the fifth radioactive element to be discovered, after uranium, thorium, radium, and polonium.
The particulate radioactive material might be natural, e.g., radon decay products ("progeny", e.g., 212 Pb), or manmade, usually fission or activation products (e.g., 137 Cs), or a combination of both. There are also "gas monitors" which pass the air through a sample chamber volume which is viewed continuously by a radiation detector.
They find wide application in the field of radioactive contamination monitoring of personnel and the environment. Detectors are designed to have one or two scintillation materials, depending on the application. "Single phosphor" detectors are used for either alpha or beta, and "Dual phosphor" detectors are used to detect both. [8]
The radon levels in some of the mines can reach 400 to 700 kBq m −3. [17] A common unit of exposure of lung tissue to alpha emitters is the working level month (WLM), this is where the human lungs have been exposed for 170 hours (a typical month worth of work for a miner) to air which has 3.7 kBq of 222 Rn (in
The concentration of radon gases is miniaturized by realtime detectors. In June 2001, typical radon concentrations in water coming into the purification system from the Super-Kamiokande tank were less than 2 mBq m −3, and in water output by the system, 0.4±0.2 mBq m −3. [11]
Ads
related to: radon detector - how it works - youtube freediscoverpanel.com has been visited by 10K+ users in the past month
assistantking.com has been visited by 10K+ users in the past month
assistantsun.com has been visited by 10K+ users in the past month