d-α correlation functions and collective motion in Xe+Au collisions at E/A=50 MeV
نویسندگان
چکیده
The interplay of the effects of geometry and collective motion on d-α correlation functions is investigated for central Xe+Au collisions at E/A=50 MeV. The data cannot be explained without collective motion, which could be partly along the beam axis. A semi-quantitative description of the data can be obtained using a Monte-Carlo model, where thermal emission is superimposed on collective motion. Both the emission volume and the competition between the thermal and collective motion influence significantly the shape of the correlation function, motivating new strategies for extending intensity interferometry studies to massive particles. PACS numbers: 25.70.-z ; 25.70.Pq
منابع مشابه
Space-Time Characterization and Collective Motion at Intermediate Energies
Shape analyses of two-particle correlation functions are discussed. Two-proton imaging provides information about the volume, the relative contributions between fast and slow emitting sources and the profile of the twoparticle source that can be directly compared to microscopic model simulations. In the case of correlations between complex particles, the role played by collective motion and spa...
متن کاملNew approach of fragment charge correlations in Xe + Sn central collisions
A recent analysis of the charge (Z) correlations in the ∆Z− < Z > plane for Xe+Sn central collisions at 32 MeV/u has shown an enhancement in the production of equally sized fragments (low ∆Z) which was interpreted as evidence for spinodal decomposition. However the signal was weak. After a critical analysis of its robustness, we propose in this paper a new technique to build the uncorrelated yi...
متن کاملDetermining Source Size in Heavy-Ion Collisions
We apply the imaging technique in order to extract the size of emitting sources produced in intermediate-energy, heavy-ion nuclear reactions. In this work, central collisions of Ar+Sc at E/A=100, 150 MeV, Kr+Nb at E/A=70,100,120 MeV, and Sn+Sn at E/A=50 MeV are examined. In addition, inclusive data of He+Ag and N+Au are analyzed. We determine the source size in two different ways: the number of...
متن کاملNon - identical particle correlation analysis as a probe of transverse flow
Non-identical two particle correlation functions probe asymmetries between the average space-time emission points of different particle species. The system collective expansion would produce such asymmetry because massive particles, such as protons, are on average more pushed towards the edge of the system, than lighter ones, i.e. pions. Measuring pion-kaon, pion-proton and kaon-proton correlat...
متن کامل3 New approach of fragment charge correlations in 129 Xe + nat Sn central collisions
A previous analysis of the charge (Z) correlations in the ∆Z− < Z > plane for Xe+Sn central collisions at 32 MeV/n has shown an enhancement in the production of equally sized fragments (low ∆Z) which was interpreted as an evidence for spinodal decomposition. However the signal is weak and rises the question of the estimation of the uncorrelated yield. After a critical analysis of its robustness...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2007