Properties of the initial participant matter interaction zone in near-Fermi-energy heavy-ion collisions

J. Wang, T. Keutgen, R. Wada, K. Hagel, S. Kowalski, T. Materna, L. Qin, Z. Chen, J. B. Natowitz, Y. G. Ma, M. Murray, A. Keksis, E. Martin, A. Ruangma, D. V. Shetty, G. Souliotis, M. Veselsky, E. M. Winchester, S. J. Yennello, D. FabrisM. Lunardon, S. Moretto, G. Nebbia, S. Pesente, V. Rizzi, G. Viesti, M. Cinausero, G. Prete, J. Cibor, Z. Majka, P. Staszel, W. Zipper, Y. El Masri, R. Alfaro, A. Martinez-Davalos, A. Menchaca-Rocha, A. Ono

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The sizes, temperatures, and free neutron-to-proton ratios of the initial interaction zones produced in the collisions of 40 MeV/nucleon Ar40+Sn112 and 55 MeV/nucleon Al27+Sn124 are derived using total detected neutron plus charged particle multiplicity as a measure of the impact parameter range and number of participant nucleons. The size of the initial interaction zone, determined from a coalescence model analysis, increases significantly with decreasing impact parameter. The temperatures and free neutron-to-proton ratios in the interaction zones are relatively similar for different impact parameter ranges and evolve in a similar fashion.

Original languageEnglish
Article number014604
JournalPhysical Review C - Nuclear Physics
Volume75
Issue number1
DOIs
Publication statusPublished - 2007

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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