Wiktionary
neutron radiation
n. A form of non-ionizing radiation consisting of free neutron.
WordNet
neutron radiation
n. radiation of neutrons (as by a neutron bomb)
Wikipedia
Neutron radiation
Neutron radiation is a kind of ionizing radiation which consists of free neutrons. A result of nuclear fission or nuclear fusion, it consists of the release of free neutrons from atoms, and these free neutrons react with nuclei of other atoms to form new isotopes, which, in turn, may produce radiation.
Usage examples of "neutron radiation".
There had been an intense release of gamma and neutron radiation in the past several hours.
The partisans had survived the neutron radiation when Chicago was bombed, having taken refuge in an underground shelter.
President-and they're pushing the timing on the neutron radiation a little at that.