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Disintegration by slow Neutrons

Published online by Cambridge University Press:  24 October 2008

J. Chadwick  and
M. Goldhaber
J. Chadwick
Affiliation:
Gonville and Caius College
M. Goldhaber
Affiliation:
Magdalene College
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Extract

All the light elements up to aluminium and some heavier ones have been examined for disintegration by slow neutrons. Large effects have been found in lithium and boron and a small effect in nitrogen, the reactions being

and probably

The charged particles emitted in the disintegration of lithium and boron afford a convenient and sensitive indicator for slow neutrons.

One of us (M. G.) desires to acknowledge the financial assistance received from the International Student Service, London, and from Magdalene College, Cambridge.

Type
Research Article
Information
Mathematical Proceedings of the Cambridge Philosophical Society , Volume 31 , Issue 4 , October 1935 , pp. 612 - 616
Copyright
Copyright © Cambridge Philosophical Society 1935

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References

* Fermi, , Amaldi, , Pontecorvo, , Rasetti, and Segrè, , Ricerca Scientifica, 5 (1934), 2, 282.Google Scholar

† A possible exception is the reaction He3 + n 1 → H3 + H1, which according to the present values of the masses of these nuclei should be exothermic.

‡ Chadwick, and Goldhaber, , Nature, 135 (1935), 65.CrossRefGoogle Scholar

§ Amaldi, , d' Agostino, , Fermi, , Pontecorvo, , Rasetti, and Segrè, , Proc. Roy. Soc. A, 149 (1935), 542.CrossRefGoogle Scholar

* Oliphant, , Kempton, and Rutherford, , Proc. Roy. Soc. A, 150 (1935), 241CrossRefGoogle Scholar. Bethe, , Phys. Rev. 47 (1935), 634.Google Scholar

† Taylor, and Goldhaber, , Nature, 135 (1935), 341.CrossRefGoogle Scholar

* It seems that no reaction of a neutron with B11 can be exothermic.

† Amaldi and others, loc. cit.

‡ Taylor and Goldhaber, loc. cit.

§ Kurtchatow, B., Kurtchatow, I. and Latyshew, , C.R. 200 (1935), 1199.Google Scholar

∥ Taylor, , Proc. Phys. Soc. London, 47 (1935), 873CrossRefGoogle Scholar

Cf. Chadwick, and Goldhaber, , Proc. Roy. Soc. A, vol. 151 (1935), 479CrossRefGoogle Scholar

* The doubtful effect previously reported by us for this element was so small that we cannot be certain that it is not due to an impurity of lithium or boron.

† Szilard, and Chalmers, , Nature, 135 (1935), 493.CrossRefGoogle Scholar

‡ Measured with lithium as neutron indicator by Dunning, , Pegram, , Fink, and Mitchell, , Phys. Rev. 48 (1935), 265.CrossRefGoogle Scholar

§ Measured with boron as neutron indicator by Bjerge, and Westcott, , Proc. Roy. Soc. A, 150 (1935), 709.CrossRefGoogle Scholar