| NUCLEAR PHYSICS |
|
|
|
|
Impact Parameter Dependence of the Double Neutron/Proton Ratio of Nucleon Emissions in Isotopic Reaction Systems |
| ZHANG Xun-Chao1,2, LI Bao-An3, CHEN Lie-Wen4,5, YONG Gao-Chan1 |
| 1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 7300002Graduate School of Chinese Academy of Sciences, Beijing 1000493Department of Physics, Texas A&M University-Commerce, Commerce, Texas 75429-3011, USA4Institute of Theoretical Physics, Shanghai Jiao Tong University, Shanghai 2002405Center of Theoretical Nuclear Physics, National Laboratory of Heavy Ion Accelerator, Lanzhou 730000 |
|
| Cite this article: |
|
ZHANG Xun-Chao, LI Bao-An, CHEN Lie-Wen et al 2009 Chin. Phys. Lett. 26 052502 |
|
|
|
|
Abstract Within the transport model IBUU04, we investigate the double neutron/proton ratio of free nucleons taken from two reaction systems using two Sn isotopes at a beam energy of 50MeV/nucleon and with impact parameters 2fm, 4fm and 8fm, respectively. It is found that the double neutron/proton ratio from peripheral collisions is more sensitive to the density dependence of the symmetry energy than those from mid-central and central collisions.
|
| Keywords:
25.70.-z
24.10.Lx
|
|
|
Received: 16 December 2008
Published: 23 April 2009
|
|
| PACS: |
25.70.-z
|
(Low and intermediate energy heavy-ion reactions)
|
| |
24.10.Lx
|
(Monte Carlo simulations (including hadron and parton cascades and string breaking models))
|
|
|
|
|
|
[1] Li B A, Chen L W and Ko C M 2008 Phys. Rep. 464 113
[2] Chen L W, Ko C M and Li B A 2005 Phys. Rev. Lett. 94 032701
[3] Zuo W, Lejeune A, Lombardo U et al 2002 Eur. Phys.J. A 14 469
[4] Brown B A 2000 Phys. Rev. Lett. 85 5296
[5] Stone J R, Miller J C, Koncewicz R et al 2004 Phys.Rev. C 68 034324
[6] Lattimer J M and Prakash M 2000 Phys. Rep. 333121
[7] Tanihata I 2001 Nucl. Phys. A 693
[8] Li B A, Ko C M, and Ren Z Z 1997 Phys. Rev. Lett. 78 1644
[9] Liu J Y, Zhao Q, Wang S Q et al 2001 Nucl. Phys. A 687 475
[10] M\"{uller H and Serot B D 1995 Phys. Rev. C 52 072
[11] Li B A and Ko C M 1997 Nucl. Phys. A 618 498
[12] Baran V, Colonna M, Toro M D et al 1998 Nucl.Phys. A 632 287
[13] Xu H S, Tsang M B, Liu T X et al 2000 Phys. Rev.Lett. 85 716
[14] Tan W P, Li B A, Donangelo R et al 2001 Phys.Rev. C 64 051901
[15] Baran V, Colonna M, Toro M D et al 2002 Nucl.Phys. A 703 603
[16] Fang D Q, Ma Y G, Zhong C et al 2007 J. Phys. G 34 2173
[17] Chen L W, Greco V, Ko C M et al 2003 Phys. Rev.Lett. 90 162701
[18] Chen L W, Ko C M and Li B A 2003 Phys. Rev. C 68 017601
[19] Zhang Y and Li Z 2005 Phys. Rev. C 71 024604
[20] Chen L W, Ko C M and Li B A 2004 Phys. Rev. C 69 054606
[21] Shi L and Danielewicz P 2003 Phys. Rev. C 68064604
[22] Li B A 2001 Phys. Rev. C 64 054604
[23] Li B A 2002 Phys. Rev. Lett. 88 192701
[24] Gaitanos T, Toro M D, Typel S et al 2004 Nucl.Phys. A 732 24
[25] Li Q F, Li Z X, Soff S et al 2005 Phys. Rev. C 72 034613
[26] Li Q F, Li Z X, Z L W et al 2006 Phys. Lett. B 634 378
[27] Li B A, Chen L W, Yong G C et al 2006 Phys. Lett.B 634 378
[28] Das C B, Gupta S Das, Gale C et al 2003 Phys.Rev. C 67 034611
[29] Li B A, Das C B, Das G S et al 2004 Nucl. Phys. A 735 563
[30] Li B A 2004 Phys. Rev. C 69 064602.
[31] Li B A and Chen L W 2005 Phys. Rev. C 72064611 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
