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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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as lemmas
- to know about
- to know all is to forgive all
- to know all the angles
- to know all the answers
- to know asunder
- to know backwards
- to know best
- to know better
- to know better formerly also better things
- to know both sides of a penny
- to know by headmark
- to know by heart
- to know by rote
- to know different
- to know enough to come in out of the rain
- to know enough to come in when it rains
- to know enough to go in when it rains
- to know experimently
- to know fashions
- to know fine well
- to know for
- to know for a fact
- to know from
- to know from nothing
- to know how many beans make five