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Experimental study on the production of light nuclei in spallation–fission reactions and projectile fragmentation of 238U

✍ Scribed by M.V. Ricciardi; P. Armbruster; J. Benlliure; M. Bernas; A. Boudard; S. Czajkowski; T. Enqvist; S. Leray; R. Legrain; B. Mustapha; M. Pravikoff; K.-H. Schmidt; C. Stephan; F. Rejmund; L. Tassan-Got; C. Volant


Publisher
Elsevier Science
Year
2002
Tongue
English
Weight
96 KB
Volume
701
Category
Article
ISSN
0375-9474

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✦ Synopsis


With the inverse kinematics method, the reaction mechanism which leads to the formation of light nuclides was investigated with a 1 A GeV 238 U beam impinging on a liquid H 2 target. Isotopes of all elements with Z 6 were unambiguously identified, and the velocity of every produced nuclide was measured with great precision. Results show that very asymmetric fission of uranium nuclei produces neutron-rich isotopes of elements down to around charge 10. When uranium interacts with heavier nuclei the features of the reaction change drastically: while fission is the main mechanism for the production of light masses in 1 A GeV 238 U on H 2 , projectile fragmentation plays a dominant role in 1 A GeV 238 U on Ti leading to the formation of stable or neutron-deficient isotopes of all elements.


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