Rapidity distributions of Z = 1 isotopes and the nuclear symmetry energy from Sn+Sn collisions with radioactive beams at 270 MeV/nucleon (CROSBI ID 316120)
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Podaci o odgovornosti
Kaneko, M. ; Murakami, T. ; Isobe, T. ; Kurata-Nishimura, M. ; Ono, A. ; Ikeno, N. ; Barney, J. ; Cerizza, G. ; Estee, J. ; Jhang, G. ; Lee, J.W. ; Lynch, W.G. ; Santamaria, C. ; Tsang, C.Y. ; Tsang, M.B. ; Wang, R. ; Ahn, D.S. ; Atar, L. ; Aumann, T. ; Baba, H. ; Boretzky, K. ; Brzychczyk, J. ; Chiga, N. ; Fukuda, N. ; Gašparić, Igor ; Hong, B. ; Horvat, A. ; Ichihara, T. ; Ieki, K. ; Inabe, N. ; Kim, Y.J. ; Kobayashi, T. ; Kondo, Y. ; Lasko, P. ; Lee, H.S. ; Leifels, Y. ; Łukasik, J. ; Manfredi, J. ; McIntosh, A.B. ; Morfouace, P. ; Nakamura, T. ; Nakatsuka, N. ; Nishimura, S. ; Olsen, R. ; Otsu, H. ; Pawłowski, P. ; Pelczar, K. ; Rossi, D. ; Sakurai, H. ; Sato, H. ; Scheit, H. ; Shane, R. ; Shimizu, Y. ; Simon, H. ; Sumikama, T. ; Suzuki, D. ; Suzuki, H. ; Takeda, H. ; Tangwancharoen, S. ; Togano, Y. ; Törnqvist, H. ; Xiao, Z. ; Yennello, S.J. ; Yurkon, J. ; Zhang, Y.
SπRIT Collaboration
engleski
Rapidity distributions of Z = 1 isotopes and the nuclear symmetry energy from Sn+Sn collisions with radioactive beams at 270 MeV/nucleon
The rapidity distributions of hydrogen isotopes emitted from central collisions of neutron-rich Sn-132+Sn-124 and neutron-deficient Sn- 108+Sn-112 systems at 270 MeV/nucleon were investigated at RIKEN- RIBF. The data are compared with antisymmetrized molecular dynamics (AMD) calculations and the rapidity distributions can be reproduced after adjusting the in-medium nucleon-nucleon cross sections. The double ratios between the two reaction systems taken for the relative yields of deuteron to proton (d/p) and triton to proton (t/p) are further examined in the midrapidity domain, where the adjustments in the AMD calculations do not affect much on them. The d/p and t/p double ratios at midrapidity agree well with the ratio of the system neutron numbers and its squared value, respectively, and the rapidity dependence of these double ratios is consistent with a picture of partial mixing of colliding nuclei. By comparing with the AMD model which shows a strong symmetry energy dependence of the t/p double ratio, the experimental result in the midrapidity domain favors the calculation with a symmetry-energy slope parameter around L = 46 MeV rather than L = 108 MeV.
Heavy radioactive isotope collisions ; Cluster productions ; Nuclear symmetry energy ; Antisymmetrized molecular dynamics
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