Systematic Behavior of Isospin Effect in Fragmentation Reactions

FANG De-Qing; MA Yu-Gang; MA Chun-Wang; ZHONG Chen; CAI Xiang-Zhou; CHEN Jin-Gen; GUO Wei; SU Qian-Min; TIAN Wen-Dong; WANG Kun; YAN Ting-Zhi; SHEN Wen-Qing

Chinese Physics C> 2007, Vol. 31> Issue(1) : 59-64

Systematic Behavior of Isospin Effect in Fragmentation Reactions

Shanghai Institute of Applied Physics, CAS, Shanghai 201800, China

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Abstract：
The isospin effect and isoscaling behaviors in projectile fragmentation reactions have been systematically investigated by a modified statistical abrasion-ablation (SAA) model. The normalized peak difference and reduced isoscaling parameters are found to decrease with (Z_proj－Z)/Z_proj or (N_proj－N)/N_proj exponentially and have no dependence on the size of reaction systems. It is pointed out that the reduced isoscaling parameters can be used as an observable to study excitation extent of system and asymmetric nuclear equation of state in heavy ion collisions.

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. Bowman J D, Swiatecki W J, TANG C F. Lawrence Berke-ley Laboratory Report No. LBL-2908, 19732. Hufner J, Shafer K, Schurmann B. Phys. Rev., 1975, C12:18883. Gosset J et al. Phys. Rev., 1977, C16: 6294. Morrissey M J et al. Phys. Rev., 1978, C18: 12675. Dayras R et al. Nucl. Phys., 1986, A460: 2996. Bonasera A, Toro M D, Gregoire C. Nucl. Phys., 1987,A463: 6537. Brohm T, Schmidt K H. Nucl. Phys., 1994, A569: 8218. Tanihata I et al. Phys. Rev. Lett., 1985, 55: 2676; Phys.Lett., 1985, B160: 3809. Tanihata I et al. Phys. Lett., 1988, B206: 59210. Miller M L et al. Phys. Rev. Lett., 1999, 82: 139911. Dempsey J F et al. Phys. Rev., 1996, C54: 171012. LI B A et al. Phys. Rev. Lett., 1996, 76: 449213. LI B A, Ko C M, Baur W. Int. J. Mod. Phys., 1998, E7:14714. Pak R et al. Phys. Rev. Lett., 1997, 78: 1022; 78: 102615. Kumar S et al. Phys. Rev., 1998, C58: 349416. MAuller H, Serot B D. Phys. Rev., 1995, C52: 207217. MA Y G et al. Phys. Rev., 1999, C60: 02460718. FANG D Q et al. Phys. Rev., 2000, C61: 044610; HEP NP, 2000, 24: 949 (in Chinese)(方得清等,高能物理与核物理, 2000, 24: 949)19. FANG D Q et al. Eur. Phys. J., 2001, A10: 038120. Tsang M B et al. Phys. Rev. Lett., 2001, 86: 502321. Tsang M B et al. Phys. Rev., 2001, C64: 04160322. Tsang M B et al. Phys. Rev., 2001, C64: 05461523. Botvina A S, Vlozhkin O, Trautmann W. Phys. Rev., 2002,C65: 04461024. Baran V et al. Phys. Rep., 2005, 410: 33525. MA Y G, SHEN W Q. Nucl. Sci. Tech., 2004, 15: 426. MA Y G et al. Phys. Rev., 2004, C69: 06461027. TIAN W D et al. Chin. Phys. Lett., 2005, 22: 30628. Fevre A L et al. Phys. Rev. Lett., 2005, 94: 16270129. Souliotis G A et al. Phys. Rev., 2006, C73: 02460630. Souliotis G A et al. Phys. Rev., 2003, C68: 02460531. Friedman W A. Phys. Rev., 2004, C69: 031601(R)32. Veselsky M, Souliotis G A, Jandel M. Phys. Rev., 2004,C69: 04460733. WANG K et al. Chin. Phys. Lett., 2005, 22: 5334. MA Y G et al. Phys. Rev., 2005,C72: 06460335. Gaimard J J, Schmidt K H. Nucl. Phys., 1991, A531: 10936. CAI X Z et al. Phys. Rev., 1998, C58: 57237. ZHONG C et al. HEP NP, 2003, 27: 39 (in Chinese)(钟晨等. 高能物理与核物理, 2003, 27:39)38. Sfienti S et al. ACTA Physica Polonica, 2003, B37: 193

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FANG De-Qing, MA Yu-Gang, MA Chun-Wang, ZHONG Chen, CAI Xiang-Zhou, CHEN Jin-Gen, GUO Wei, SU Qian-Min, TIAN Wen-Dong, WANG Kun, YAN Ting-Zhi and SHEN Wen-Qing. Systematic Behavior of Isospin Effect in Fragmentation Reactions[J]. Chinese Physics C, 2007, 31(1): 59-64.

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Received: 2006-04-21
Revised: 2006-06-27

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Systematic Behavior of Isospin Effect in Fragmentation Reactions

Corresponding author: FANG De-Qing,

Shanghai Institute of Applied Physics, CAS, Shanghai 201800, China

Received Date: 2006-04-21

Accepted Date: 2006-06-27

Available Online: 2007-01-05

Abstract: The isospin effect and isoscaling behaviors in projectile fragmentation reactions have been systematically investigated by a modified statistical abrasion-ablation (SAA) model. The normalized peak difference and reduced isoscaling parameters are found to decrease with (Z_proj－Z)/Z_proj or (N_proj－N)/N_proj exponentially and have no dependence on the size of reaction systems. It is pointed out that the reduced isoscaling parameters can be used as an observable to study excitation extent of system and asymmetric nuclear equation of state in heavy ion collisions.

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Systematic Behavior of Isospin Effect in Fragmentation Reactions

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