Effects of the entrance channel mass asymmetry in fusion reactions

  • The symmetric and asymmetric fusion reaction systems forming the same compound nuclei 26Al, 30Si, 38Ar and 170Hf are investigated with the frame of improved isospin dependent quantum molecular dynamics model. The entrance channel mass asymmetry dependence of compound nucleus formation is found by analyzing the shell correction energies, the Coulomb barriers and the fusion cross sections. The calculated fusion cross sections agree quantitatively with the experimental data. The results indicate that compound nucleus formation is favorable for the systems with larger mass asymmetry because of the smaller Coulomb contribution to the fusion barrier.

  • 加载中
  • [1] Cwiok S,Dobaczewski J,Heenen P H et al.Nucl.Phys.A,1996,611:211-246[2] Rutz K,Bender M,Bürvenich T et al.Phys.Rev.C,1997,56:238-243[3] Bender M,Rutz K,Reinhard P G et al.Phys.Rev.C,1999,60:034304[4] Kruppa A T,Bender M,Nazarewicz W et al.Phys.Rev.C,2000,61:034313[5] Bender M,Nazarewicz W,Reinhard P G.Phys.Lett.B,2001,515:42-48[6] Hofmann S,Münzenberg G.Rev.Mod.Phys.,2000,72:733[7] Hofmann S,Heβberger F P,Ackermann D et al.Eur.Phys.J.A,2001,10:5-10[8] Oganessian Yu Ts,Utyonkoy V K,Lobanov Yu V et al.Phys.Rev.C,2004,69:021601(R)[9] Adamian G G,Antonenko N V,Scheid W et al.Nucl.Phys.A,1997,627:361-378[10] Aritomo Y,Wada T,Ohta M et al.Phys.Rev.C,1999,59:796-809[11] Zagrebaev V I.Phys.Rev.C,2001,64:034606[12] Govil I M,Singh R,Kumar A et al.Nucl.Phys.A,2000,674:377-393[13] Prasad N V S V,Vinodkumar A M,Sinha A K et al.Nucl.Phys.A,1996,603:176-202[14] Fazio G,Giardina G,Mandaglio G et al.Phys.Rev.C,2005,72:064614[15] FENG Zhao-Qing,ZHANG Feng-Shou,JIN Gen-Ming et al.Nucl.Phys.A,2005,750:232-244[16] BIAN Bao-An,ZHANG Feng-Shou,ZHOU Hong-Yu.Phys.Lett.B,2008,665:314-317[17] BIAN Bao-An,ZHANG Feng-Shou,ZHOU Hong-Yu.Nucl.Phys.A,2009,829:1-12[18] WANG Ning,WU Xi-Zhen,LI Zhu-Xia.Phys.Rev.C,2003,67:024604[19] Papa M,Maruyama T,Bonasera A.Phys.Rev.C,2001,64:024612[20] FENG Zhao-Qing,JIN Gen-Ming,ZHANG Feng-Shou et al.High Energy Phys.and Nucl.Phys.,2005,29(12):1157-1161(in Chinese)[21] Gherghescu R A,Skalski J,Patyk Z et al.Nucl.Phys.A,1999,651:237-249[22] Gherghescu R A,Greiner W,Münzenberg G.Phys.Rev.C,2003.68:054314[23] Strutinsky V M.Nucl.Phys.A,1967,95:420-442[24] WONG C Y.Phys.Rev.Lett.,1973,31:766-799[25] Bass R.Nuclear Reactions with Heavy Ions.New York,Springer,1980.283[26] Myers W D,Swiatecki W J.Phys.Rev.C,2000,62:044610[27] Siwek-Wilczynska K,Wilczynski J.Phys.Rev.C,2001,64:024611[28] Denisov V Yu,Norenberg W.Eur.Phys.J.A,2002,15:375-388[29] Vandenbosch R,Lazzarini A J.Phys.Rev.C,1981,23:1074-1079[30] Heusch B,Beck C,Coffin J P et al.Phys.Rev.C,1982,26:542-554[31] Anjos R M,Guiar(a)es V,Added N et al.Phys.Rev.C,1990,42:354-362[32] Gil S,Hasenbalg F,Testoni J E et al.Phys.Rev.C,1995,51:1336-1344
  • 加载中

Get Citation
BIAN Bao-An and ZHANG Feng-Shou. Effects of the entrance channel mass asymmetry in fusion reactions[J]. Chinese Physics C, 2010, 34(10): 1602-1608. doi: 10.1088/1674-1137/34/10/010
BIAN Bao-An and ZHANG Feng-Shou. Effects of the entrance channel mass asymmetry in fusion reactions[J]. Chinese Physics C, 2010, 34(10): 1602-1608.  doi: 10.1088/1674-1137/34/10/010 shu
Milestone
Received: 2009-11-14
Revised: 2010-03-03
Article Metric

Article Views(2313)
PDF Downloads(441)
Cited by(0)
Policy on re-use
To reuse of subscription content published by CPC, the users need to request permission from CPC, unless the content was published under an Open Access license which automatically permits that type of reuse.
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Email This Article

Title:
Email:

Effects of the entrance channel mass asymmetry in fusion reactions

    Corresponding author: ZHANG Feng-Shou,

Abstract: 

The symmetric and asymmetric fusion reaction systems forming the same compound nuclei 26Al, 30Si, 38Ar and 170Hf are investigated with the frame of improved isospin dependent quantum molecular dynamics model. The entrance channel mass asymmetry dependence of compound nucleus formation is found by analyzing the shell correction energies, the Coulomb barriers and the fusion cross sections. The calculated fusion cross sections agree quantitatively with the experimental data. The results indicate that compound nucleus formation is favorable for the systems with larger mass asymmetry because of the smaller Coulomb contribution to the fusion barrier.

    HTML

Reference (1)

目录

/

DownLoad:  Full-Size Img  PowerPoint
Return
Return