Origin of the finite nuclear spin and its effect in intermediate energy heavy ion collisions

NUCLEAR, HEAVY ION AND ATOMIC PHYSICS

Origin of the finite nuclear spin and its effect in intermediate energy heavy ion collisions

ZHANG Guoqiang，

CAO Xiguang，

FU Yao，

MA Yugang，

CAI Xiangzou，

WANG Hongwei，

FANG Deqing，

CHEN Jingen，

GUO Wei，

Tian Wendong，

LIU Guihua

Nuclear Science and Techniques

Vol.23, No.1

pp.61-64

Published in print 20 Feb 2012

DOI：10.13538/j.1001-8042/nst.23.61-64

31800

The heavy-ion phase-space exploration (HIPSE) model is used to discuss the origin of the nuclear spin in intermediate energy heavy-ion collision (HIC). The spin of maximal projectile-like fragment is found to depend strongly on impact parameter of a reaction system, while it relates weakly to the collision violence. Some interesting multi-fragmentation phenomena related to the spin are shown. We also found that the excitation energy in the de-excitation stage plays a robust role at the de-excitation stage in HIC.

Nuclear spinProjectile multifragmentationProjectile evaporationPhase transition

References

[1]

Bonasera A, Chen Z, Wada R, et al. Phys Rev Lett, 2008, 101: 122702(1-4).

[2]

Ma Y G, Natowitz J B, Wada R, et al. Phys Rev C, 2005, 71: 054606(1-23).

[3]

Ma Y G. Phys Rev Lett, 1999, 83: 3617-3620.

[4]

Borderie B, Rivet M F. Prog Part Nucl Phys, 2008, 61: 551-601.

[5]

Elliott J B, Moretto L G, Phair L, et al. Phys Rev Lett, 2002, 88: 042701(1-4).

[6]

Ma Y G. Eur Phys J A, 2006, 30: 227-242.

[7]

Lopez O, Lacroix D, Vient E. Phys Rev Lett, 2005, 95: 242701, 1-4.

[8]

Pichon M, Tamain B, Bougault R, et al. Nucl Phys A, 2006, 779: 267-296.

[9]

Gross D H E. Eur Phys J A. 2006, 30: 293-302.

[10]

Ma Y G, Wada R, Hagel K, et al. Phys Rev C, 2004, 69: 031604(R), 1-5.

[11]

D'Agostino M, Gulminelli F, Chomaz Ph, et al. Phys Lett B, 2000, 473 : 219-225.

[12]

Lacroix D, Van Lauwe A, Durand D. Phys Rev C, 2004, 69: 054604(1-12).

[13]

Ring P, Schuck P. The Nuclear Many-Body Problem. New-York: Spring-Verlag, 1980, 33.

[14]

Durand D. Nucl Phys A, 1992, 541: 266-294.

[15]

Fèvre A Le, Aichelin J, Hartnack C, et al. Phys Rev C, 2009, 80: 044615(1-11).