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Title: Angular Correlations Between Fragment Spin and Prompt Neutron Evaporation in Spontaneous Fission of 252Cf: 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 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.

Authors:
 [1];  [2];  [3];  [4]; ;  [5]; ;  [6];  [7]
  1. Flerov Laboratory of Nuclear Reactions, JINR, 141980 Dubna (Russian Federation)
  2. Physikalisches Institut der Universitaet, D-72076 Tuebingen (Germany)
  3. Frank Laboratory of Neutron Physics, JINR, 141980 Dubna (Russian Federation)
  4. Institut fuer Kernphysik, Technische Universitaet, D-64289 Darmstadt (Germany)
  5. Universite Libre de Bruxelles, 1050 Bruxelles (Belgium)
  6. Institut de Recherches Subatomiques, F-67037 Strasbourg Cedex (France)
  7. Gesellschaft fuer Schwerionenforschung (GSI), D-64220 Darmstadt (Germany)
Publication Date:
OSTI Identifier:
21061799
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 912; Journal Issue: 1; Conference: International symposium on exotic nuclei, Khanty-Mansiysk (Russian Federation), 17-22 Jul 2006; Other Information: DOI: 10.1063/1.2746594; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ANGULAR CORRELATION; ANISOTROPY; CALIFORNIUM 252; EVAPORATION MODEL; FISSION FRAGMENTS; IONIZATION CHAMBERS; NUCLEAR FRAGMENTATION; PROMPT NEUTRONS; SPIN; SPONTANEOUS FISSION

Citation Formats

Prokhorova, E., Goennenwein, F., Kopatch, Yu., Mutterer, M., Hanappe, F., Kinnard, V., Stuttge, L., Dorvaux, O., and Wollersheim, H.-J. Angular Correlations Between Fragment Spin and Prompt Neutron Evaporation in Spontaneous Fission of 252Cf: CORA-Demon Experiment. United States: N. p., 2007. Web. doi:10.1063/1.2746594.
Prokhorova, E., Goennenwein, F., Kopatch, Yu., Mutterer, M., Hanappe, F., Kinnard, V., Stuttge, L., Dorvaux, O., & Wollersheim, H.-J. Angular Correlations Between Fragment Spin and Prompt Neutron Evaporation in Spontaneous Fission of 252Cf: CORA-Demon Experiment. United States. doi:10.1063/1.2746594.
Prokhorova, E., Goennenwein, F., Kopatch, Yu., Mutterer, M., Hanappe, F., Kinnard, V., Stuttge, L., Dorvaux, O., and Wollersheim, H.-J. Tue . "Angular Correlations Between Fragment Spin and Prompt Neutron Evaporation in Spontaneous Fission of 252Cf: CORA-Demon Experiment". United States. doi:10.1063/1.2746594.
@article{osti_21061799,
title = {Angular Correlations Between Fragment Spin and Prompt Neutron Evaporation in Spontaneous Fission of 252Cf: CORA-Demon Experiment},
author = {Prokhorova, E. and Goennenwein, F. and Kopatch, Yu. and Mutterer, M. and Hanappe, F. and Kinnard, V. and Stuttge, L. and Dorvaux, O. and Wollersheim, H.-J.},
abstractNote = {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.},
doi = {10.1063/1.2746594},
journal = {AIP Conference Proceedings},
number = 1,
volume = 912,
place = {United States},
year = {Tue May 22 00:00:00 EDT 2007},
month = {Tue May 22 00:00:00 EDT 2007}
}