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A Survey of Radioactivity Produced by High Energy Neutron Bombardment

A Survey of Radioactivity Produced by High Energy Neutron Bombardment M. L. POOL,* J. M. CORK AND R. L. THORNTON Department of Physics, University of Michigan, Ann Arbor, Michigan (Received July 3, 1937) A LARGE number of the known stable ele- ments have been bombarded by neutrons of energies ranging up to 20 Mev. The transmuta- tion reaction of the type involving the ejection of two neutrons is apparently evident with varying degrees of intensity in nearly all the elements of * Elizabeth Clay Howald Scholar. the periodic table. In addition, reactions of the type where a proton or an alpha-particle is ejected are observed. For bombarding neu- trons of low energy these reactions are observed only for relatively light elements, but for very energetic neutrons such reactions are evidently quite common in elements of high atomic number. TABLF 1. Radioactivity produced by very high energy neutron bombardment. At. Element At. Element No. bombarded Period, intensity, sign, assignmiient Other work No. bombarded Period, intensity, sign, assignment Other work 20 m, vw, +, C" 10.5 m, ve, N'3 2.1 m, vw, 015 108 m, w, 4, F"s Chem. 15 h, vs, -, Na24 10 m, vs -, Mg2 15 h, vs -, Na24 Chei 6 m, vw, +, Si27 http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review American Physical Society (APS)

A Survey of Radioactivity Produced by High Energy Neutron Bombardment

Physical Review , Volume 52 (3) – Aug 1, 1937
2 pages

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Publisher
American Physical Society (APS)
Copyright
Copyright © 1937 The American Physical Society
ISSN
1536-6065
DOI
10.1103/PhysRev.52.239
Publisher site
See Article on Publisher Site

Abstract

M. L. POOL,* J. M. CORK AND R. L. THORNTON Department of Physics, University of Michigan, Ann Arbor, Michigan (Received July 3, 1937) A LARGE number of the known stable ele- ments have been bombarded by neutrons of energies ranging up to 20 Mev. The transmuta- tion reaction of the type involving the ejection of two neutrons is apparently evident with varying degrees of intensity in nearly all the elements of * Elizabeth Clay Howald Scholar. the periodic table. In addition, reactions of the type where a proton or an alpha-particle is ejected are observed. For bombarding neu- trons of low energy these reactions are observed only for relatively light elements, but for very energetic neutrons such reactions are evidently quite common in elements of high atomic number. TABLF 1. Radioactivity produced by very high energy neutron bombardment. At. Element At. Element No. bombarded Period, intensity, sign, assignmiient Other work No. bombarded Period, intensity, sign, assignment Other work 20 m, vw, +, C" 10.5 m, ve, N'3 2.1 m, vw, 015 108 m, w, 4, F"s Chem. 15 h, vs, -, Na24 10 m, vs -, Mg2 15 h, vs -, Na24 Chei 6 m, vw, +, Si27

Journal

Physical ReviewAmerican Physical Society (APS)

Published: Aug 1, 1937

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