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photoneutron
photoneutron n.
Brit. 
/ˌfəʊtə(ʊ)ˈnjuːtrɒn/
, /ˌfəʊtə(ʊ)ˈnjuːtrɒn/U.S. /ˌfoʊdoʊˈn(j)uˌtrɑn/
Nuclear Physics a neutron released from a nucleus by the action of a gamma-ray photon./ˌfoʊdoʊˈn(j)uˌtrɑn/ΘΚΠ
the world > matter > physics > atomic physics > particle physics > particle participating in strong interaction > baryon > [noun] > neutron > released by photon
photoneutron1935
1935 Proc. Royal Soc. A. 151 488 The angular distribution of the photo-neutrons from beryllium was investigated.
1992 Health Physics 62 359/1 This neutron field is produced by photoneutrons generated in the metal portion of the shield when the primary X-ray beam is aimed at the barrier.
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