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Source shape determination with directional fragment-fragment velocity correlations

Abstract : Correlation functions, constructed from directional projections of the relative velocities of fragments, are used to determine the shape of the breakup volume in coordinate space. For central collisions of 129Xe + natSn at 50 MeV per nucleon incident energy, measured with the 4pi multi-detector INDRA at GSI, a prolate shape aligned along the beam direction with an axis ratio of 1:0.7 is deduced. The sensitivity of the method is discussed in comparison with conventional fragment-fragment velocity correlations.
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Submitted on : Monday, November 12, 2007 - 5:27:08 PM
Last modification on : Friday, August 5, 2022 - 2:54:00 PM

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A. Le Fevre, C. Schwarz, G. Auger, M. L. Begemann-Blaich, N. Bellaize, et al.. Source shape determination with directional fragment-fragment velocity correlations. Physics Letters B, Elsevier, 2008, 659, pp.807-812. ⟨10.1016/j.physletb.2007.11.081⟩. ⟨in2p3-00186887⟩



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