| Articles |
|
|
|
|
Density and Symmetric Potential Dependences of Isoscaling Behaviour in the Lattice Gas Model |
| SU Qian-Min1,2,3;MA Yu-Gang1;TIAN Wen-Dong1;FANG De-Qing1;CAI Xiang-Zhou1;WANG Kun1 |
| 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 2018002Graduate School of the Chinese Academy of Sciences, Beijing 1000493College of Electronic and Electrical Engineering, Shanghai University of Engineering Science, Shanghai 201620 |
|
| Cite this article: |
|
SU Qian-Min, MA Yu-Gang, TIAN Wen-Dong et al 2008 Chin. Phys. Lett. 25 2000-2003 |
|
|
|
Abstract Isoscaling behaviour of the statistical emission fragments from the equilibrated sources with Z=30 and N=30, 33, 36 and 39 is investigated in the framework of the isospin-dependent lattice gas model. The dependences of isoscaling parameters α on source isospin asymmetry, temperature and
freeze-out density are studied, and the `symmetry energy' is deduced from isoscaling parameters. The results show that symmetry energy Csym is insensitive to the change of temperature but follows the power-law dependence on the freeze-out density ρ. The effect of strength of asymmetry of nucleon--nucleon interaction potential on the density dependence of the symmetry energy is discussed.
|
| Keywords:
24.10.Pa
25.70.-z
05.70.Ce
|
|
|
Received: 09 January 2008
Published: 31 May 2008
|
|
| PACS: |
24.10.Pa
|
(Thermal and statistical models)
|
| |
25.70.-z
|
(Low and intermediate energy heavy-ion reactions)
|
| |
05.70.Ce
|
(Thermodynamic functions and equations of state)
|
|
|
|
|
|
[1] Tsang M B et al 2001 Phys. Rev. Lett. 86 5023
[2] Tsang M B et al 2001 Phys. Rev. C 64 054615
[3]Botvina A S et al 2002 Phys. Rev. C 65 044610
[4]Tian W D et al 2007 Phys. Rev. C 76 024607
[5]Ma Y G et al 2004 Phys. Rev. C 69 064601
[6]Fang D Q et al 2007 J. Phys. G 34 2173
[7] Zhong C et al 2006 Chin. Phys. 15 1481
[8]Wang K et al 2005 Chin. Phys. Lett. 22 53
[9] Ma Y G et al 2005 Phys. Rev. C 72 064603
[10]Veselsky M 2006 Phys. Rev. C 74 054611 Veselsky M, Souliotis G A, and Yennello S J 2004 Phys.Rev. C 69 031602(R)
[11]Dorso C O et al 2006 Phys. Rev. C 73 044601
[12] Ono A et al 2003 Phys. Rev. C 68 051601(R)
[13] Tian W D et al 2005 Chin. Phys. Lett. 22 306
[14] Lee T D and Yang C N 1952 Phys. Rev. 87 410
[15] Ma Y G et al 1999 Chin. Phys. Lett. 16256 Ma Y G et al 1999 Phys. Rev. C 60 24607 Ma Y G 1999 Phys. Rev. Lett. 83 3617
[16] Pan J C and Das Gupta S 1998 Phys. Rev. C 57 1839
[17] Dorso C O et al 2006 Phys. Rev. C 73 034605
[18]Ma Y G 2001 J. Phys. G 27 (2001) 2455
[19]Coniglio A and Klein E 1980 J. Phys. A 13 2775
[20] Li B A and Chen L W 2006 Phys. Rev. C 74 034610
[21] Shetty D V et al 2007 Phys. Rev. C 76 024606 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
