Publication: Velocity fluctuations of fission fragments
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2016-02
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World Scientific Publ. Co.
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Abstract
We propose event by event velocity fluctuations of nuclear fission fragments as an additional interesting observable that gives access to the nuclear temperature in an independent way from spectral measurements and relates the diffusion and friction coefficients for the relative fragment coordinate in Kramer-like models (in which some aspects of fission can be understood as the diffusion of a collective variable through a potential barrier). We point out that neutron emission by the heavy fragments can be treated in effective theory if corrections to the velocity distribution are needed.
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The work of FJLE relied on the Spanish Excellence Network on Hadronic Physics FIS2014-57026-REDT, and grants UCM:910309, MINECO:FPA2014-53375-C2-1-P. He also thanks the Department of Energy’s Institute for Nuclear Theory at the University of Washington for its partial support and hospitality, particularly George Bertsch for advising on the manuscript.