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Recoil effects in peripheral nucleus-nucleus collisions at E/A=84 MeV
Institution:1. Max-Planck Institut für Kernphysik, D-6900 Heidelberg, Fed. Rep. Germany;2. Institut für Kernphysik, D-6000 Frankfurt, Fed. Rep. Germany;1. Institut für Kernphysik, Institute for Advanced Simulation and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany;2. Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn, D-53115 Bonn, Germany;3. Faculty of Natural Sciences and Engineering, Gaziantep Islam Science and Technology University, Gaziantep 27010, Turkey;4. Center for Advanced Simulation and Analytics (CASA), Forschungszentrum Jülich, D-52425 Jülich, Germany;5. Facility for Rare Isotope Beams and Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA;6. Tbilisi State University, 0186 Tbilisi, Georgia;1. Department of Physics, Panjab University, Chandigarh -160014, India;2. Department of Physics, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad- 500078, India;3. Saha Institute of Nuclear Physics, 1/AF Bidhan Nagar, Kolkata-700064, India;1. Department of Physics and Astronomy, Texas A&M University-Commerce, Commerce, TX 75429-3011, USA;2. Department of Physics, Shanghai University, Shanghai 200444, China;3. School of Physics and Astronomy and Shanghai Key Laboratory for Particle Physics and Cosmology, Shanghai Jiao Tong University, Shanghai 200240, China;4. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
Abstract:Azimuthal angular correlations between projectile fragments and light particles have been measured in 18O induced reactions on 58.64Ni and 197Au targets at E/A=84 MeV. Neither sequential projectile decay nor evaporation from an equilibrated target-like recoil can explain the observed correlations. The data are well described in terms of a sideways-moving source suggesting emission of midrapidity light particles from a subset of nucleons which carries a major part of the transverse recoil momentum imparted by the projectile fragment.
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