The registered particles, according to the international organization, are the result of a nuclear fission caused by humans.
The Swedish and Finnish nuclear authorities have also measured unusual radiation. However, according to the Finnish authority STUK, the concentrations were so low that they may have been released under normal use of a nuclear reactor. The Swedish nuclear authority also mentions the concentration of the particles as very low, much lower, for example, than the particles measured in Sweden after the Fukushimaramp in Japan in 2011.
“No alarming radiation”
Commenting on the measurements in Northern Europe, a Kremlin spokesman said that Russia has an “advanced measurement system and that there is no alarming radiation.”
The International Atomic Energy Agency (IAEA) has asked countries whether they have also measured striking radiation particles and whether they can explain where the particles come from.
RIVM has the measurement data from Scandinavia analyzed and also concludes that on the basis of this data it is not possible to determine the source. No unusual radiation particles have been measured in the Netherlands itself, the institute says.