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A comparison of some absolute methods of measuring fast neutron flux

Published online by Cambridge University Press:  24 October 2008

K. W. Allen
Affiliation:
Cavendish LaboratoryCambridge
D. L. Livesey
Affiliation:
Cavendish LaboratoryCambridge
D. H. Wilkinson
Affiliation:
Cavendish LaboratoryCambridge

Extract

The absolute measurement of fast neutron flux presents several difficult problems. Few methods have yet been described in the literature, although the experimental techniques developed by several authors for the detection of fast neutrons (Baldinger, Huber and Staub(7), Barshall and Kanner(9), Amaldi, Bocciarelli, Ferretti and Trabacchi (3), Gray (19), Barshall and Battat(8)) may easily be adapted to this type of measurement. It is, however, most important to have available methods of measuring fast neutron flux to permit the determination of cross-sections for nuclear processes induced by fast neutrons, and several such methods have been developed in the Cavendish Laboratory in recent years. They are the subjects of separate papers (Bretscher and French (13), Kinsey, Cohen and Dainty (21), Allen (l), Allen and Wilkinson (2)). The main purpose of the present paper is to describe the results of experiments carried out to compare these methods in order to test the validity of the assumptions implicit in the individual methods.

Type
Research Article
Copyright
Copyright © Cambridge Philosophical Society 1950

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References

REFERENCES

(1)Allen, K. W.British declassified report on atomic energy, Br 193 (1945).Google Scholar
(2)Allen, K. W. and Wilkinson, D. H.Proc. Cambridge Phil. Soc. 44 (1948), 581.CrossRefGoogle Scholar
(3)Amaldi, E., Bocciabelli, D., Ferretti, B. and Trabacchi, G. C.Naturwissenschaften, 30 (1942), 582.CrossRefGoogle Scholar
(4)Amaldi, E., Hafstad, L. R. and Tuve, M. A.Phys. Rev. 51 (1937), 896.CrossRefGoogle Scholar
(5)Argo, H. V.Phys. Rev. 74 (1948), 1293.CrossRefGoogle Scholar
(6)Bailey, C. L., Bennett, W. E., Bergstrahl, T., Nuckolls, R. G., Richards, H. T. and Williams, J. H.Phys. Rev. 70 (1946), 583.CrossRefGoogle Scholar
(7)Baldinger, E., Huber, P. and Staub, H.Helv. Phys. Acta, 11 (1937), 266.Google Scholar
(8)Barshall, H. H. and Battat, M. E.Phys. Rev. 70 (1946), 245.CrossRefGoogle Scholar
(9)Barshall, H. H. and Kanner, M. H.Phys. Rev. 58 (1940), 590.CrossRefGoogle Scholar
(10)Bennett, W. E., Mandeville, C. E. and Richards, H. T.Phys. Rev. 69 (1946), 418.CrossRefGoogle Scholar
(11)Bohm, D. and Richman, C.Phys. Rev. 71 (1947), 567.CrossRefGoogle Scholar
(12)Bonner, T. W.Phys. Rev. 59 (1941), 237.CrossRefGoogle Scholar
(13)Bretscher, E. and French, A. P.British declassified report on atomic energy, Br 386 (1944).Google Scholar
(14)Bretscher, E. and Murrell, E. B. M.British declassified report on atomic energy, Br 137 (1943).Google Scholar
(15)Champion, F. C. and Powell, C. F.Proc. Roy. Soc. A, 183 (1944), 64.Google Scholar
(16)Coon, J. H. and Nobles, R. A.Rev. Sci. Instrum. 18 (1947), 44.CrossRefGoogle Scholar
(17)Dee, P. I. and Gilbert, C. W.Proc. Roy. Soc. A, 163 (1937), 265.Google Scholar
(18)Gibson, W. M. and Livesey, D. L.Proc. Phys. Soc. 60 (1948), 523.CrossRefGoogle Scholar
(19)Gray, L. H.Proc. Cambridge Phil. Soc. 40 (1944), 72.CrossRefGoogle Scholar
(20)Huntoon, R. D., Ellett, A., Bayley, D. S. and van Allen, J. A.Phys. Rev. 58 (1940), 97.CrossRefGoogle Scholar
(21)Kinsey, B. B., Cohen, S. G. and Dainty, J.Proc. Cambridge Phil. Soc. 44 (1948), 96.CrossRefGoogle Scholar
(22)Livesey, D. L. and Wilkinson, D. H.Proc. Roy. Soc. A, 195 (1948), 123.Google Scholar
(23)Livingston, M. S. and Bethe, H. A.Rev. Mod. Phys. 9 (1937), 261.CrossRefGoogle Scholar
(24)Powell, C. F. and Occhialini, G. P. S.Report on the Physical Society Conference on Fundamental Particles (1948), p. 150.Google Scholar
(25)Stafford, G. H.Nature, London, 162 (1948), 771.CrossRefGoogle Scholar
(26)Tatel, H.Phys. Rev. 61 (1942), 450.CrossRefGoogle Scholar
(27)Tollestbup, A. V., Jenkins, F. A., Fowler, W. A. and Lauritsen, C. C.Phys. Rev. 75 (1949), 1947.CrossRefGoogle Scholar
(28)Wilkinson, D. H.Proc. Cambridge Phil. Soc. 44 (1948), 114.CrossRefGoogle Scholar