| Original Articles |
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Isoscaling in Statistical Sequential Decay Model |
| TIAN Wen-Dong 1;MA Yu-Gang 1;CAI Xiang-Zhou 1;FANG De-Qing 1;GUO Wei 1;MA Chun-Wang 1;LIU Gui-Hua 1,2;SHEN Wen-Qing 1;SHI Yu 1,2;SU Qian-Min 1,2;WANG Hong-Wei 1;WANG Kun 1;YAN Ting-ZHi |
| 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, P.O. Box 800-204, Shanghai 201800
2 School of the Chinese Academy of Sciences, Beijing 100049 |
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| Cite this article: |
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TIAN Wen-Dong, MA Yu-Gang, CAI Xiang-Zhou et al 2007 Chin. Phys. Lett. 24 385-388 |
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Abstract A sequential decay model is used to study isoscaling, i.e. the factorization of the isotope ratios from sources of different isospins and sizes over a broad range of excitation energies, into fugacity terms of proton and neutron umber, R21(N,Z)=Y2(N,Z)/Y1(N,Z)=Cexp(αN+βZ). It is found that the isoscaling parameters α and β have a strong dependence on the isospin difference of equilibrated source and excitation energy, no significant influence of the ource size on α and β has been observed. It is found that α and β decrease with the excitation energy and are linear functions of 1/T and β(Z/A)2 or △(N/A)2 of the
sources. Symmetry energy coefficient Csym is constrained from the relationship of α and source △(Z/A)2, β and source △(N/A)2.
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24.10.-i
24.10.Pa
25.70.-z
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Received: 21 August 2006
Published: 24 February 2007
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| PACS: |
24.10.-i
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(Nuclear reaction models and methods)
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24.10.Pa
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(Thermal and statistical models)
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25.70.-z
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(Low and intermediate energy heavy-ion reactions)
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[1] Li B A and Schroeder W 2001 Isospin Physics in Heavy IonCollisions at Intermediate Energies (New York: Nova Science)
[2] Di Toro M et al 1999 Prog. Nucl. Nucl. Phys. f 42125 and references therein
[3] Li B A, Ko C M and Bauer W 1998 Int. J. Mod. Phys. Ef 7 147 and references therein
[4] Ma Y G et al 1999 Phys. Rev. C f 60 024607
[5] M\"{uller H and Serot B D 1995 Phys. Rev. C f 52 2072
[6] Bombaci I, Kuo T S and Lombardo U 1994 Phys. Rep. f242 165
[7] Das Gupta S, Mekjian A Z and Tsang M B 2001 Adv. Nucl.Phys. f 26 91
[8] Xu H S et al 2000 Phys. Rev. Lett. f 85 716
[9] Tsang M B et al 2001 Phys. Rev. C f 64 041603(R)
[10] Tsang M B et al 2001 Phys. Rev. Lett. f 86 5023
[11] Tsang M B et al 2001 Phys. Rev. C f 64 054615
[12] Brzychczyk J et al 1993 Phys. Rev. C f 47 1553
[13] Volkov V 1978 Phys. Rep. f 44 93
[14] Veselsky M, Souliotis G A and Jandel M 2004 Phys. Rev.C f 69 044607
[15] Souliotis G A et al 2003 Phys. Rev. C f 68 024605
[16] Botvina A S, Lozhkin O V and Trautmann W 2002 Phys.Rev. C f 65 044610
[17] Baran V et al 2005 Phys. Rep. f 410 335
[18] Geraci E et al 2004 Nucl Phys. A f 732 173
[19] Shetty D V et al 2004 Phys. Rev. C f 70 011601(R)
[20] Wang K et al 2005 Chin. Phys. Lett. f 22 53
[21] Ma Y G et al 2005 Phys. Rev. C f 72 064603
[22] Ma Y G et al 2004 Phys. Rev. C f 69 064610
[23] Ono A, Danielewicz P, Friedman W A, Lynch W G and Tsang M B2003 Phys. Rev. C f 68 051601(R)
[24] Tian W D et al 2005 Chin. Phys. Lett. f 22 306
[25] Raduta A R 2005 Eur. Phys. J. A f 24 85
[26] Tian W D et al nucl-th/0601079
[27] Fang D Q et al nucl-th/0601067
[28] Charity R J et al 1988 Nucl. Phys. A f 483 371
[29] Charity R J Computer Code GEMINI http://wunmr.wustl.edu/pub/gemini
[30] Hauser H and Feshbach H 1952 Phys. Rev. f 87 366
[31] Moretto L G 1975 Nucl. Phys. A f 247 211
[32] Charity R J, Korolija M, Sarantites D G and Sobotka L G 1997 Phys. Rev. C f 56 873
[33] Bohr Aagr and Mottelson Ben R 1998 Nuclear Structures(New York: Benjamin) vol II
[34] Krappe H J, Nix J R and Sierk A J 1979 Phys. Rev. Cf 20 992
[35] Moller P and Nix J R 1981 Nucl. Phys. A f 361 117
[36] Li B A and Chen L W 2006 Phys. Rev. C f 74 034610 |
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