The correlation functions and emission time scales for light particles and light fragments in 40Ar+197Au reactions at 25 MeV/nucleon |
| |
| Institution: | 1. Physics Department, University of Notre Dame, Notre Dame, IN 46556, USA;2. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824, USA;3. Department of Physics and Astronomy, Michigan State University, East Lansing, MI 48824, USA;4. Physics Department, University of Michigan, Ann Arbor, MI 48109, USA;5. Physics Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA;1. Department of Physics, Duke University, Durham, NC 27708-0308, USA;2. Triangle Universities Nuclear Laboratory, Durham, NC 27708-0308, USA;3. Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA;4. School of Science, Huzhou University, Huzhou 313000, China;5. Los Alamos National Laboratory, Los Alamos, NM 87545, USA;6. Kubrick Group, London, SE1 0BE, United Kingdom;7. Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA;1. Aksaray University, Physics Dept., Aksaray, Turkey;2. Osmaniye Korkut Ata University, Physics Dept., Osmaniye, Turkey;3. Afyon Kocatepe University, Physics Dept., Afyonkarahisar, Turkey;1. Faculty of Science and Arts, Department of Physics, E-90 Highway 7, Km Main Campus, Aksaray University, 68100 Aksaray, Turkey;2. Faculty of Engineering, Department of Energy Systems Engineering, Prof. Ahmet Taner Kışlalı Cd. Campus, Giresun University, 28200 Giresun, Turkey |
| |
| Abstract: | Two-particle correlation functions were measured for the emission of protons, deuterons, tritons, α, and lithium fragment at small relative momenta in 40Ar-induced reactions on 197Au at 25 MeV/nucleon. Based on three-body trajectory calculations the emission time scales for the particles were extracted from p-d, d-d, t-t, and lithium-lithium correlation functions. The mean emission time was found to decrease with increasing sum of the kinetic energies of the particle in a correlated pairs, indicating the emission of more energetic particles at earlier stages of the reaction than at later stages. The time scale for the emission of lithium fragments emission suggests that sequential binary disassembly occurs in 40Ar+197Au reaction at MeV/nucleon. Mean emission temperature of 3.5−0.8+1.3 and 3.6±0.4 MeV were also extracted from the relative populations of the excited and ground states of the respective emitted nuclides 8Be and 4He. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
