ENTRY 14696 20210310 14821469600000001 SUBENT 14696001 20210310 14821469600100001 BIB 10 24 1469600100002 TITLE The Emission and Scattering of Neutrons 1469600100003 AUTHOR (J.R.Dunning) 1469600100004 REFERENCE (J,PR,45,586,1934) 1469600100005 #doi:10.1103/PhysRev.45.586 1469600100006 INSTITUTE (1USACOL) 1469600100007 INC-SOURCE (RN-BE) 1469600100008 DETECTOR (IOCH) 1469600100009 METHOD The interaction of high energy neutrons with matter 1469600100010 seems to be largely one of approximately elastic 1469600100011 collisions with atomic nuclei, resulting in 1469600100012 scattering of the neutrons. The scattering of 1469600100013 neutrons has been studied using interposed 1469600100014 cylindrical specimens to scatter neutrons away from 1469600100015 the ionization chamber, and using toroidal specimens 1469600100016 to scatter neutrons into the ionization chamber. 1469600100017 ANALYSIS Th collision areas computed from the scattering 1469600100018 measurements increase with atomic weight in a manner 1469600100019 that indicates that the effective volume of the 1469600100020 nucleus is proportional to its atomic weight, but the 1469600100021 classical elastic sphere collision theory is 1469600100022 inadequate,and a wave theory of scattering must be 1469600100023 used to obtain consistent quantitative results. 1469600100024 STATUS (TABLE) Table II, page 597. 1469600100025 HISTORY (20210310C) BP 1469600100026 ENDBIB 24 0 1469600100027 COMMON 2 3 1469600100028 EN-MIN EN-MAX 1469600100029 MEV MEV 1469600100030 0.1 14.0 1469600100031 ENDCOMMON 3 0 1469600100032 ENDSUBENT 31 0 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