Effect of neutron skin thickness on projectile fragmentation

被引：19

作者：

Dai, Z. T. ^{[1
,2
]}

Fang, D. Q. ^{[1
]}

Ma, Y. G. ^{[1
,3
]}

Cao, X. G. ^{[1
]}

Zhang, G. Q. ^{[1
]}

Shen, W. Q. ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Shanghai Tech Univ, Shanghai 200031, Peoples R China

来源：

PHYSICAL REVIEW C | 2015年 / 91卷 / 03期

基金：

中国国家自然科学基金;

关键词：

COLLISIONS; DEPENDENCE; EMISSION; EQUATION; NUCLEI; RADII;

D O I：

10.1103/PhysRevC.91.034618

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The fragment production in collisions of Ca-48,Ca-50+C-12 at 50 MeV/nucleon are simulated via the isospin-dependent quantum molecular dynamics (IQMD) model followed by the GEMINI code. By changing the diffuseness parameter of neutron density distribution to obtain different neutron skin sizes, the effects of neutron skin thickness (delta(np)) on projectile-like fragments (PLFs) are investigated. The sensitivity of isoscaling behavior to neutron skin size is studied, from which it is found that the isoscaling parameter a has a linear dependence on delta(np). A linear dependence between delta(np) and the mean N/Z [N (Z) is neutron (proton) number] of the PLF is obtained as well. The results show that thicker neutron skin will lead to smaller isoscaling parameter alpha and N/Z. Therefore, it may be probable to extract information of neutron skin thickness from isoscaling parameter alpha and N/Z.

引用

页数：7

共 58 条

[1] Determining the Density Content of Symmetry Energy and Neutron Skin: An Empirical Approach [J].

Agrawal, B. K. ;

De, J. N. ;

Samaddar, S. K. .

PHYSICAL REVIEW LETTERS, 2012, 109 (26)

[2] IMPORTANCE OF MOMENTUM-DEPENDENT INTERACTIONS FOR THE EXTRACTION OF THE NUCLEAR-EQUATION OF STATE FROM HIGH-ENERGY HEAVY-ION COLLISIONS [J].

AICHELIN, J ;

ROSENHAUER, A ;

PEILERT, G ;

STOECKER, H ;

GREINER, W .

PHYSICAL REVIEW LETTERS, 1987, 58 (19) :1926-1929

[3] The AME2003 atomic mass evaluation (II). Tables, graphs and references [J].

Audi, G ;

Wapstra, AH ;

Thibault, C .

NUCLEAR PHYSICS A, 2003, 729 (01) :337-676

[4] Isoscaling in light-ion induced reactions and its statistical interpretation [J].

Botvina, AS ;

Lozhkin, OV ;

Trautmann, W .

PHYSICAL REVIEW C, 2002, 65 (04) :446101-4461013

[5] Neutron radii in nuclei and the neutron equation of state [J].

Brown, BA .

PHYSICAL REVIEW LETTERS, 2000, 85 (25) :5296-5299

[6] Nucleon-nucleon momentum-correlation function as a probe of the density distribution of valence neutrons in neutron-rich nuclei [J].

Cao, X. G. ;

Cai, X. Z. ;

Ma, Y. G. ;

Fang, D. Q. ;

Zhang, G. Q. ;

Guo, W. ;

Chen, J. G. ;

Wang, J. S. .

PHYSICAL REVIEW C, 2012, 86 (04)

[7] Constraints on the symmetry energy and neutron skins from pygmy resonances in 68Ni and 132Sn [J].

Carbone, Andrea ;

Colo, Gianluca ;

Bracco, Angela ;

Cao, Li-Gang ;

Bortignon, Pier Francesco ;

Camera, Franco ;

Wieland, Oliver .

PHYSICAL REVIEW C, 2010, 81 (04)

[8] Nuclear Symmetry Energy Probed by Neutron Skin Thickness of Nuclei [J].

Centelles, M. ;

Roca-Maza, X. ;

Vinas, X. ;

Warda, M. .

PHYSICAL REVIEW LETTERS, 2009, 102 (12)

[9] SYSTEMATICS OF COMPLEX FRAGMENT EMISSION IN NIOBIUM-INDUCED REACTIONS [J].

CHARITY, RJ ;

MCMAHAN, MA ;

WOZNIAK, GJ ;

MCDONALD, RJ ;

MORETTO, LG ;

SARANTITES, DG ;

SOBOTKA, LG ;

GUARINO, G ;

PANTALEO, A ;

FIORE, L ;

GOBBI, A ;

HILDENBRAND, KD .

NUCLEAR PHYSICS A, 1988, 483 (02) :371-405

[10] Isocaling and the symmetry energy in the multifragmentation regime of heavy-ion collisions [J].

Chen, Z. ;

Kowalski, S. ;

Huang, M. ;

Wada, R. ;

Keutgen, T. ;

Hagel, K. ;

Bonasera, A. ;

Natowitz, J. B. ;

Materna, T. ;

Qin, L. ;

Sahu, P. K. ;

Wang, J. .

PHYSICAL REVIEW C, 2010, 81 (06)

← 1 2 3 4 5 6 →