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Angular Correlations Between Fragment Spin and Prompt Neutron Evaporation in Spontaneous Fission of $^{252}$Cf: CORA-Demon Experiment

Abstract : A novel method to search for the anisotropic emission of prompt neutrons in the center-of-mass system of fission fragments is presented. The anisotropy is conjectured to be due to the large spins of fission fragments are known to carry. Triple neutron- neutron-fragment correlations in spontaneous fission of $^{252}$Cf were investigated in an exploratory experiment dubbed CORA-DEMON experiment. Fission fragments were intercepted in a double ionization chamber while neutrons were spotted in 2 two-dimensional cylindrical walls of Demon detectors with the target on the vertical cylinder axis. A new method of analysis of triple angular correlations between 2 neutrons and a fission fragment was applied. Preliminary results are reported.
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http://hal.in2p3.fr/in2p3-00156670
Contributor : Béatrice Forrler <>
Submitted on : Friday, June 22, 2007 - 10:30:32 AM
Last modification on : Friday, May 8, 2020 - 1:10:15 AM

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E. Prokhorova, F. Gönnenwein, Yu. Kopatch, M. Mutterer, F. Hanappe, et al.. Angular Correlations Between Fragment Spin and Prompt Neutron Evaporation in Spontaneous Fission of $^{252}$Cf: CORA-Demon Experiment. International Symposium on Exotic Nuclei (EXON 2006), Jul 2006, Khanty-Mansiysk, Russia. pp.179-184, ⟨10.1063/1.2746594⟩. ⟨in2p3-00156670⟩

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