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The disintegration of boron by slow neutrons

Published online by Cambridge University Press:  24 October 2008

J. C. Bower ,
E. Bretscher  and
C. W. Gilbert
J. C. Bower
Affiliation:
Emmanuel College
E. Bretscher
Affiliation:
Fitzwilliam House
C. W. Gilbert
Affiliation:
Jesus College
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Extract

Photometrical measurements of the photographic images of cloud tracks of the disintegration of boron by slow neutrons,

have enabled the ranges of both the He and the Li particle to be determined. We find that the He particle has a range of 7·0 ± 0·3 mm. and the Li particle a range of 4·3 ± 0·2 mm. in standard air.

We deduce that the 7Li nucleus is usually formed in an excited state, with energy of excitation of either 0·5 or 0·8 M.e.V. The wide latitude in excitation energy is due to the uncertain state of our knowledge of the energy-range relation for α-particles.

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 34 , Issue 2 , April 1938 , pp. 290 - 295
Copyright
Copyright © Cambridge Philosophical Society 1938

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References

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