Fukushima's radiation falls onto Toronto at cancer radiotherapy levels

Direct evidence of radiation falling on Canada in the rain, as far east as Toronto. 20,000 CPM is equivalent to a highly targeted dose of radiation used for cancer radiotherapy.

The radiation one typically encounters is one of four types: alpha radiation, beta radiation, gamma radiation, and x radiation. Neutron radiation is also encountered in nuclear power plants and high-altitude flight and is emitted from some industrial radioactive sources.


Alpha Radiation


Alpha radiation is a heavy, very short-range particle and is actually an ejected helium nucleus. Some characteristics of alpha radiation are:

  1. Most alpha radiation is not able to penetrate human skin.
  2. Alpha-emitting materials can be harmful to humans if the materials are inhaled, swallowed, or absorbed through open wounds.
  3. A variety of instruments has been designed to measure alpha radiation. Special training in the use of these instruments is essential for making accurate measurements.
  4. A thin-window Geiger-Mueller (GM) probe can detect the presence of alpha radiation.
  5. Instruments cannot detect alpha radiation through even a thin layer of water, dust, paper, or other material, because alpha radiation is not penetrating.
  6. Alpha radiation travels only a short distance (a few inches) in air, but is not an external hazard.
  7. Alpha radiation is not able to penetrate clothing.

Examples of some alpha emitters: radium, radon, uranium, thorium.

internet site reference: http://theagoranational.ca/index.php/content/health/item/322-extremely-high-radiation-20000-cpm-in-ontario-after-rainfall


Comments

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You are one of the first media outlets to mention alpha emitting dusts as a hazard, well done!There have been recent technological advances that make them easier to measure.Nitrogen molecules in the air emit a flash in the UV spectrum, when hit by alphas.This can be measured:

NPL STANDOFF ALPHA DETECTOR

http://www.npl.co.uk/upload/pdf/20101117_irmf_gilligan.pdf



Alpha particles are commonly called “harmless”,as they will not pass through the skin, or even paper or plastic.....BUT.....our mouths, lungs and stomach are not lined with skin, but with mucous membrane, whose nuclei are very near the surface, and easily damaged by alphas, leading to cancer risk.

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