Uncertainties and understanding of experimental and theoretical results regarding reactions forming heavy and superheavy nuclei

被引:16
|
作者
Giardina, G. [1 ]
Mandaglio, G. [2 ,3 ]
Nasirov, A. K. [4 ,5 ]
Anastasi, A. [6 ]
Curciarello, F. [6 ]
Fazio, G. [1 ]
机构
[1] Univ Messina, Dipartimento Sci Matemat & Informat Sci Fis & Sci, Messina, Italy
[2] Univ Messina, Dipartimento Sci Chim Biol Farmaceut & Ambientali, Messina, Italy
[3] Ist Nazl Fis Nucl, Sez Catania, Catania, Italy
[4] JINR Bogoliubov Lab Theoret Phys, Dubna, Russia
[5] Uzbek Acad Sci, Inst Nucl Phys, Tashkent, Uzbekistan
[6] Ist Nazl Fis Nucl, Lab Nazl Frascati, Frascati, Italy
关键词
Nuclear reactions; Fusion probability; Surviving probability of CN; Heavy and superheavy elements; EVEN-EVEN NUCLIDES; LEVEL DENSITY; QUASI-FISSION; FUSION-FISSION; MASSIVE NUCLEI; ENERGY-DEPENDENCE; PROBABILITY; DYNAMICS; MODEL; ENHANCEMENT;
D O I
10.1016/j.nuclphysa.2017.11.010
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
Experimental and theoretical results of the P-CN fusion probability of reactants in the entrance channel and the W-sur survival probability against fission at deexcitation of the compound nucleus formed in heavy-ion collisions are discussed. The theoretical results for a set of nuclear reactions leading to formation of compound nuclei (CNs) with the charge number Z = 102-122 reveal a strong sensitivity of P-CN to the characteristics of colliding nuclei in the entrance channel, dynamics of the reaction mechanism, and excitation energy of the system. We discuss the validity of assumptions and procedures for analysis of experimental data, and also the limits of validity of theoretical results obtained by the use of phenomenological models. The comparison of results obtained in many investigated reactions reveals serious limits of validity of the data analysis and calculation procedures. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:169 / 207
页数:39
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