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Excitation Functions for ( α , n ), ( α , 2 n ), and ( α , 3 n ) Reactions on Indium

Excitation Functions for ( α , n ), ( α , 2 n ), and ( α , 3 n ) Reactions on Indium Excitation Functions for (a, n), (a, 2n), and (a, 3n) Reactions on Indium* GEORGES M. TEMMER** Department of Physics, University of California, Berkeley, California W HEN In"', whose isotopic abundance is 95.5 percent, is bombarded with a-particles, the capture process followed by the emission of one, two, or three neutrons leads to antimony isotopes of mass numbers 118, 117, and 116, respectively. Activities in the first two mentioned Sb isotopes have been reported by Coleman and Pool,1 who obtained them by an (a, n) reaction on indium and deuteron bombardmefit of tin. Because of the ten stable tin isotopes, the isotopic as- signment could only be made tentatively. The a-particles of the Berkeley 60-inch cyclotron (37 Mev) produce sufficient excitation in the compound nucleus to permit the evaporation of one, two, and three neutrons. Hence, activities in the (a, n), (a, 2n), and (a, 3n) products were found and identified chemically as antimony, and by Calutron analysis as being mass numbers 116, 117, and 118. The periods found for ELECTRON SPEi Hr12?8 1QOOO _ Els 156 KEV 2: v CAML ots~~~~~~~~~I 260KEV Sbl18 and Sbl7 (5.1 hours and 2.8 hours) agree with those reported by Coleman and Pool. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review American Physical Society (APS)

Excitation Functions for ( α , n ), ( α , 2 n ), and ( α , 3 n ) Reactions on Indium

Temmer, Georges M
Physical Review , Volume 76 (3) – Aug 1, 1949
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Publisher
American Physical Society (APS)
Copyright
Copyright © 1949 The American Physical Society
ISSN
1536-6065
DOI
10.1103/PhysRev.76.424
Publisher site
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Abstract

Excitation Functions for (a, n), (a, 2n), and (a, 3n) Reactions on Indium* GEORGES M. TEMMER** Department of Physics, University of California, Berkeley, California W HEN In"', whose isotopic abundance is 95.5 percent, is bombarded with a-particles, the capture process followed by the emission of one, two, or three neutrons leads to antimony isotopes of mass numbers 118, 117, and 116, respectively. Activities in the first two mentioned Sb isotopes have been reported by Coleman and Pool,1 who obtained them by an (a, n) reaction on indium and deuteron bombardmefit of tin. Because of the ten stable tin isotopes, the isotopic as- signment could only be made tentatively. The a-particles of the Berkeley 60-inch cyclotron (37 Mev) produce sufficient excitation in the compound nucleus to permit the evaporation of one, two, and three neutrons. Hence, activities in the (a, n), (a, 2n), and (a, 3n) products were found and identified chemically as antimony, and by Calutron analysis as being mass numbers 116, 117, and 118. The periods found for ELECTRON SPEi Hr12?8 1QOOO _ Els 156 KEV 2: v CAML ots~~~~~~~~~I 260KEV Sbl18 and Sbl7 (5.1 hours and 2.8 hours) agree with those reported by Coleman and Pool.

Journal

Physical Review – American Physical Society (APS)

Published: Aug 1, 1949

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