Environmental radioactivity
Überwachung der Umweltradioaktivität (IMIS)
Comprehensive Nuclear Test-Ban
Defence against nuclear hazards
Medical Use of Radiation
Consumer Goods, Industry, Technology
Radiation Effects
Occupational Radiation Protection
BfS Papers on the Topic
Frequently Asked Questions (FAQs) Ionising Radiation

Ionising Radiation

historical X-ray picture year 1896 www.roentgen-museum.de / nuclear explosion on October 31, 1952Ionising Radiation

Ionising radiation includes both electromagnetic radiation – such as X-rays and gamma radiation – and particle radiation – such as alpha, beta and neutron radiation. Its main feature is that it has enough energy to ionise atoms and molecules, i. e. to generate positively and negatively charged particles from electrically neutral atoms and molecules. When going through matter – e. g. through a cell or an organism – ionising radiation gives off energy. If this energy is high enough serious radiation damages can occur.

Ionising radiation is both part of nature and the result of human activities.Natural radioactive substances exist in man and in the soils and rocks of the earth´s crust. In the medical field, in research, technology and through using nuclear energy radioactive substances are used purposefully and generated artificially.


Latest News

What is ionising radiation?
Explanations of some terms used in radiation protection more...

BfS experts at international Workshop on Nuclear Accident Management

In the scope of the international RANET Response and Assistance Network a Workshop on nuclear accident management takes place from 17 to 21 November 2014 in Fukushima. The Workshop, which also includes two measurement campaigns in the Futuba region (located ca. five kilometres from Fukushima Daiichi) is co-ordinated by the International Atomic Energy Agency (IAEA). For the first time, also staff of the Federal Office for Radiation Protection take part. more...
Radiation Protection Register: Results

In Germany in 2012, about 400 000 people have been classified as occupationally exposed to radiation. more...
Measures for the protection from elevated radon concentrations in buildings

Radon protection by suitable building measuresIt is reasonable to refurbish buildings with a radon exposure above an annual mean value of 100 becquerel per cubic metre compartment air. Such values are mainly measured in areas/regions with high natural radon concentration in the soil. Persons staying in rooms with enhanced radon contents in the air over years, have a higher risk of contracting lung cancer. more...