Radioisotopes

"Radionuclides" with the same atomic number (i.e. same element and same number of protons in the nucleus) are also referred to as isotopes. Example: The two uranium isotopes U-235 and U-236 contain 92 protons each. The number of neutrons however is 143 or 144, respectively.

On April 25th, 2017 the operating duties and responsibilities for the Asse II mine were transferred to the BGE, the Federal Company for Radioactive Waste Disposal. Therefore this archival page of the Federal Office for Radiation Protection has not been updated since April 24th, 2017. You find current information about the Asse II mine at www.bge.de/en/asse