Disappearance of flow and its relevance to nuclear matter physics
Jul, 1990
Published in:
- Phys.Rev.C 42 (1990) R10-R14
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Abstract: (APS)
Light charged fragments from the reaction Ar40+51V at 35–85 MeV/nucleon in 10 MeV/nucleon steps have been measured with a 4π detector. The observed transverse collective momentum in central collisions decreases monotonically from 45 to 85 MeV/nucleon. The data are interpreted assuming that the attractive mean-field deflects the fragments to negative scattering angles. As the beam energy is raised, the attractive scattering is opposed by the buildup of compressed nuclear matter. A lower limit of 76 MeV/nucleon is placed on the beam energy where the attractive deflection is balanced by the repulsive side-splash mechanism. The results are compared to theoretical predictions and it is demonstrated the predictions are sensitive to two aspects of nuclear matter physics: the in-medium nucleon-nucleon cross section and the nuclear compressibility.- 25.70.Np
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