Where there is a cesium

Where there is a cesium? For many people, the rare metal caesium may be unfamiliar, and here's the introduction to it:

The metal caesium is a gold, low-melting, reactive metal that is easily oxidized in the air and can react with water to produce hydrogen and explode. Cesium has no single form in nature, and cesium elements are rarely found in land and oceans in the form of salt. Cesium is also an important material for making vacuum parts and photoelectric tubes. Radionuclides cs-137 is one of the radioactive contamination leaked from Japan's fukushima daiichi nuclear power plant.

The long-lived cesium-137 is the fission product of uranium-235. In the half-life of 30.17 years, radioactive beta and gamma rays are used as a source of beta and gamma radiation for agriculture and health care. As the radioactive waste of nuclear fuel was stored, its radiation increased in proportion to gamma radiation; Is the main object stored.