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Angular correlations between fragment spin and prompt neutron evaporation in spontaneous fission of 252Cf: CORA-demon experiment

par Prokhorova, E.V.;Gönnenwein, Friedrich;Kopatch, Yu;Mutterer, Manfred;Hanappe, Francis ;Kinnard, V.;Stuttge, Louise;Dorvaux, O.;Wollersheim, Hans Jürgen
Référence AIP Conference Proceedings, 912, page (179-184)
Publication Publié, 2007

Article révisé par les pairs

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Résumé :

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 252Cf 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. © 2007 American Institute of Physics.