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XVIII.—Energy Levels of B10: Evidence from the B10 γ-ray Spectrum.*

Published online by Cambridge University Press:  14 February 2012

R. B. Galloway  and
R. M. Sillitto
R. B. Galloway
Affiliation:
Department of Natural Philosophy, University of Edinburgh
R. M. Sillitto
Affiliation:
Department of Natural Philosophy, University of Edinburgh
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Synopsis

A study of the γ-rays produced during the bombardment of a thick Be9 target by 600 keV deuterons was made to investigate the possible existence of a level at 2·86 MeV in B10, about which contradictory reports have appeared in the literature.

A spectrum of the γ-rays in coincidence with the 0·72 MeV B10 γ-ray (text-fig. 5) was obtained, and is interpreted as providing evidence for a level in B10 at 2·86 MeV. The relative intensities of the γ-rays in an ungated spectrum, and in spectra gated by the 0·72 and 1·02 MeV B10 γ-rays, were found, and a decay scheme consistent with the observations is deduced (text-fig. 6b). The relative intensities of the transitions in this decay scheme are consistent with the intensities of the neutron groups in a spectrum of the neutrons from this reaction. A spin value of 2 or 3 is suggested for the 2.86 MeV level.

Type
Research Article
Information
Proceedings of the Royal Society of Edinburgh Section A: Mathematics , Volume 65 , Issue 3 , 1960 , pp. 247 - 262
Copyright
Copyright © Royal Society of Edinburgh 1960

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