采用把重离子碰撞的动力学和统计衰变过程相结合的一个两步模型,再现了INDRA Collaborations对入射能为35 AMeV40Ca+40Ca和48Ca+48Ca反应的实验结果.进而得到了反应碎块同位素分布的Isoscaling参数α(Z)和β(N),约化对称能系数ξ(Z)及与平均场中的对称能强度系数Cs之间的关系.结果表明,Isoscaling参数强烈依赖于系统的丰中子程度.随着质子数的增大,ξ(Z)在动力学阶段呈现平缓趋势但在衰变之后呈现上升趋势,且该结果不依赖于所选取的反应系统.对称能效应在统计衰变过程之后的末级碎块分布中有明显表现.
参考文献
| [1] | TSANG M B;ZHANG Yingxun;DANIELEWICZ P.[J].Physical Review Letters,2009102:122701. |
| [2] | SAMADDAR S K;DE J N;VINAS X.[J].Physical Review C:Nuclear Physics,200778:041602. |
| [3] | 张英逊;卢晓华;赵凯.[J].原子核物理评论,201128(04):377. |
| [4] | LEHAUT G;GULMINELLI F;LOPEZ O.[J].Physical Review Letters,2009102:142503. |
| [5] | 雍高产;李宝安;陈列文.[J].原子核物理评论,200926(02):85. |
| [6] | LIB A;CHEN W;KO C M.Recent Progress and New Challenges in Isospin Physics with Heavy-ion Reactions[J].PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS,2008464:113. |
| [7] | 李庆峰;郭琛琛;王永佳.[J].原子核物理评论,201330(03):331. |
| [8] | NAPOLITANI P;COLONNA M;GULMINELLI F.[J].Physical Review Letters,201081:044619. |
| [9] | ONO AKIRA.[J].AIP Conf Proc Ser,2007884:292. |
| [10] | ADEMARD G;BORDERIE B;CHBIHI A.[J].European physical Journal A,201450:33. |
| [11] | WANG N;LI ZX;WUX Z.[J].PhysRev C,200469:034608. |
| [12] | WANG N;LI Z X;WU X Z.[J].Physical Review C:Nuclear Physics,200265:064608. |
| [13] | CHARITY R J;MCMAHAN M A;WOZNIAK G J.[J].Nuclear Physics A,1988483:371. |
| [14] | WANG Lichun;YAN Shiwei;LI Yanjing.[J].Nuclear Physics A,2013920:1. |
| [15] | LI Yanjing;YAN Shiwei;JIANG Xiang;WANG Lichun.[J].Nuclear Physics A,2013902:1. |
| [16] | CHENG JX;JIANG X;YANSW.[J].JPhysG:Nucl Part Phys,201239:055104. |
| [17] | MALLIK SWAGATA;CHAUDHURI GARGI.[J].Physical Review C:Nuclear Physics,201387:011602. |
| [18] | CHEN Z;KOWALSKIS S;HUANG M.[J].Physical Review C:Nuclear Physics,201081:064613. |
| [19] | 普洁;乔庆鹏;魏慧玲.[J].原子核物理评论,201229(02):129. |
| [20] | TSANG M B;HSI W C;LYNCH W G.[J].Physical Review C:Nuclear Physics,200164:054601. |
| [21] | TSANG M B;HSI W C;LYNCH W G.[J].Physical Review Letters,2008101:122702. |
| [22] | CHAUDHURI G;DAS GUPTA S;MOCKO M.[J].Nuclear Physics A,2008813:293. |
| [23] | MINICH R W;AGARWALS S;BUJAK A.[J].Physics Letters B,1982118:458. |
| [24] | ONO AKIRA;DANIELEWICZ P;FRIEDMAN W A.[J].Physical Review C:Nuclear Physics,200368:051601. |
| [25] | WUENSCHEL S;DIENHOFFER R;SOULIOTIS G A.[J].Physical Review C:Nuclear Physics,2009791:061602. |
| [26] | XU H S;TSANG M B;LIU T X.[J].Physical Review Letters,200085:716. |
| [27] | TSANG M B;FRIEDMAN W A;GELBKE C K.[J].Physical Review Letters,200186:5023. |
| [28] | SOULIOTIS G A;SHETTY D V;VESELSKY M.[J].Physical Review C:Nuclear Physics,200368:024605. |
| [29] | GERACI E;BRUNOA M;D AGOSTINOA M.[J].Nuclear Physics A,2004732:173. |
| [30] | LE F(E)VRE A.[J].Physical Review Letters,200594:162701. |
| [31] | BOTVINA A S;LOZHKIN O V;TRAUTMAN W.[J].Physical Review C:Nuclear Physics,200265:044610. |
| [32] | OLMI A;LYNEN U;NATOWITZ J B.[J].Physical Review Letters,198044:383. |
| [33] | HUANG M;CHEN Z;KOWALSKIS S.[J].Nuclear Physics A,2010847:233. |
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