Prompt Neutron Multiplicity Distribution in the Spontaneous Fission of Curium-242

J. Halperin; C. E. Bemis, Jr.; J. W. T. Dabbs; B. H. Ketelle; R. W. Stoughton; R. W. Hoff; R. J. Dougan

doi:dx.doi.org/10.13182/NSE80-A20317

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Prompt Neutron Multiplicity Distribution in the Spontaneous Fission of Curium-242

J. Halperin, C. E. Bemis, Jr., J. W. T. Dabbs, B. H. Ketelle, R. W. Stoughton, R. W. Hoff, R. J. Dougan

Nuclear Science and Engineering / Volume 75 / Number 1 / July 1980 / Pages 56-59

Technical Paper / dx.doi.org/10.13182/NSE80-A20317

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The prompt neutron multiplicity distribution for the spontaneous fission of ²⁴²Cm has been measured. The measurement has been carried out with a neutron multiplicity counter using hydrogen moderation and neutron detection with ³He proportional gas counters. The fission chamber is of a novel design enabling the measurement of fission fragments in the presence of high alpha intensities. We report a value of (²⁴²Cm) = 2.532 ± 0.013, which is in turn based on an assumed value for (²⁵²Cf) = 3.760.