Reaction mechanisms and multifragmentation processes in Zn-64+Ni-58 at 35A-79A MeV
文献类型：期刊论文
| 作者 | Wada, R; Hagel, K; Cibor, J; Gonin, M; Keutgen, N; Murray, M; Natowitz, JB; Ono, A; Steckmeyer, JC; Kerambrum, A |
| 刊名 | PHYSICAL REVIEW C
 |
| 出版日期 | 2000-09 |
| 卷号 | 62 |
| ISSN号 | 0556-2813 |
| 英文摘要 | Reaction mechanisms and multifragmentation processes have been studied for Zn-64 + Ni-58 collisions at intermediate energies with the help of antisymmetrized molecular dynamics (AMD-V) model calculations. Experimental energy spectra, angular distributions, charge distributions, and isotope distributions, classified by their associated charged particle multiplicities, are compared with the results of the AMD-V calculations. In general the experimental results are reasonably well reproduced by the calculations. The multifragmentation observed experimentally at all incident energies is also reproduced by the AMD-V calculations. A detailed study of AMD-V events reveals that, in nucleon transport, the reaction shows some transparency, whereas in energy transport the reaction is much less transparent at all incident energies studied here. The transparency in the nucleon transport indicates that. even for central collisions, about 75% of the projectile nucleons appear in the forward direction. In energy transport about 80% of the initial kinetic energy of the projectile in the center-of-mass frame is dissipated. The detailed study of AMD-V events also elucidates the: dynamics of the multifragmentation process. The study suggests that, at 35A MeV, the semitransparency and thermal expansion are the dominant mechanisms for the multifragmentation process, whereas at 49A MeV and higher incident energies a nuclear compression occurs at an early stage of the reaction and plays an important role in the multifragmentation process in addition to that of the thermal expansion and the semitransparency. |
| WOS关键词 | ANTISYMMETRIZED MOLECULAR-DYNAMICS ; HIGHLY EXCITED NUCLEI ; HEAVY-ION REACTIONS ; HOT NUCLEI ; EXCITATION-ENERGIES ; VIOLENT COLLISIONS ; FRAGMENT EMISSION ; CHARGED-PARTICLE ; 35 MEV/NUCLEON ; MULTIDETECTOR |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000089346100034 |
| 出版者 | AMERICAN PHYSICAL SOC |
| 源URL | [http://119.78.100.186/handle/113462/56550]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Wada, R |
| 作者单位 | 1.Texas A&M Univ, Inst Cyclotron, College Stn, TX 77843 USA 2.Tohoku Univ, Dept Phys, Sendai, Miyagi 9808578, Japan 3.Inst Sci Mat & Rayonnement, CNRS, IN2P3, LPC, F-14050 Caen, France 4.Univ Caen, F-14050 Caen, France 5.CNRS, IN2P3, CEA, DSM,GANIL, F-14076 Caen 05, France 6.Univ Catholique Louvain, FNRS, IPN, B-1348 Louvain, Belgium 7.Univ Nantes, IN2P3, CNRS, SUBATECH, F-44070 Nantes 03, France 8.Univ Naples, Dipartimento Sci Fis, I-80126 Naples, Italy 9.Ecole Polytech, LPHNE X, F-91128 Palaiseau, France 10.CNRS, IN2P3, Inst Nucl Phys, F-91406 Orsay, France |
| 推荐引用方式 GB/T 7714 | Wada, R,Hagel, K,Cibor, J,et al. Reaction mechanisms and multifragmentation processes in Zn-64+Ni-58 at 35A-79A MeV[J]. PHYSICAL REVIEW C,2000,62. |
| APA | Wada, R.,Hagel, K.,Cibor, J.,Gonin, M.,Keutgen, N.,...&Vient, E.(2000).Reaction mechanisms and multifragmentation processes in Zn-64+Ni-58 at 35A-79A MeV.PHYSICAL REVIEW C,62. |
| MLA | Wada, R,et al."Reaction mechanisms and multifragmentation processes in Zn-64+Ni-58 at 35A-79A MeV".PHYSICAL REVIEW C 62(2000). |
入库方式： OAI收割
来源：近代物理研究所
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