Influence of the neutron numbers of projectile and target on the evaporation residue cross sections in hot fusion reactions

2016 ◽  
Vol 93 (6) ◽  
Author(s):  
Long Zhu ◽  
Jun Su ◽  
Feng-Shou Zhang
Keyword(s):  
Cross Sections ◽  
Evaporation Residue ◽  
Fusion Reactions

COLD FUSION REACTIONS USING NEUTRON-RICH PROJECTILES

2013 ◽  
Vol 22 (08) ◽  
pp. 1350061 ◽  
Author(s):  
A. SULAKSONO
Keyword(s):  
Cross Section ◽  
Compound Nucleus ◽  
Cross Sections ◽  
Estimation Method ◽  
Cold Fusion ◽  
Evaporation Residue ◽  
Fusion Reactions ◽  
Fusion Barrier ◽  
The Cross ◽  
Evaporation Residues

This paper studies the formation cross-sections of super heavy (SH) nuclei in some cold fusion reactions of radioactive neutron-rich projectiles with double-magic 208 Pb target. In this study, the cross-sections of capture, fusion and evaporation residues in one- and two-neutron (1n and 2n) channels are calculated by using neutron-rich Fe , Ni and Zn projectiles are compared to the cross-sections calculated using stable Fe , Ni and Zn projectiles. The heights of fusion barrier and their positions in all reactions considered in this study are also compared to the heights and positions calculated using the estimation method proposed by Dutt and Puri. For cold fusion reactions with stable Fe , Ni and Zn projectiles, the heights of fusion barrier and the cross-sections of evaporation residues in 1n and 2n channels are compared to their corresponding experimental data. In general, for reactions using projectiles with the same proton number, the neutron-rich projectile is found to yield relatively-heavier mass of SH nucleus and larger evaporation residue cross-section, compared to those of the corresponding stable projectiles. However, in certain reactions, the cross-sections of neutron-rich projectile can be slightly larger or slightly smaller than that of the corresponding stable projectile. This behavior is highly affected by the charge of projectile and the fission barrier of the formed compound nucleus (CN). In addition, the 292114 is found to be the heaviest compound nucleus formed in cold fusion reaction by using neutron-rich nuclei as the projectile, but the cross-section of evaporation residue in one-neutron channel is still around few pico barns (pb).

Investigations on 54–60Fe + 238–244Pu → 296–302120 fusion reactions

2020 ◽  
pp. 1-8
Author(s):  
H.C. Manjunatha ◽  
L. Seenappa ◽  
N. Sowmya ◽  
K.N. Sridhar
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Survival Probability ◽  
Superheavy Element ◽  
Evaporation Residue ◽  
Superheavy Nuclei ◽  
Fusion Reactions ◽  
Compound Nucleus Formation ◽  
Evaporation Residue Cross Section ◽  
Target Combination

We have studied the 54–60Fe-induced fusion reactions to synthesize the superheavy nuclei296–302120 by studying the compound nucleus formation probability, survival probability, and evaporation residue cross-sections. The comparison of the evaporation residue cross-section for different targets reveals that the evaporation residue cross-section is larger for projectile target combination 58Fe+243Pu→301120. We have identified the most probable 58Fe-induced fusion reactions to synthesize superheavy nuclei 296–302120. The suggested reactions may be useful to synthesize the superheavy element Z = 120.

Fusion-fission and neutron-evaporation-residue cross-sections in 40Ar- and 50Ti-induced fusion reactions

1984 ◽  
Vol 419 (3) ◽  
pp. 571-588 ◽  
Author(s):  
H.-G. Clerc ◽  
J.G. Keller ◽  
C.-C. Sahm ◽  
K.-H. Schmidt ◽  
H. Schulte ◽  
...  
Keyword(s):  
Cross Sections ◽  
Evaporation Residue ◽  
Fusion Reactions ◽  
Neutron Evaporation

scholarly journals Decay of 160Er* in 16O + 144Nd and 64Ni + 96Zr Fusion Reactions

2019 ◽  
Vol 7 ◽  
pp. 137
Author(s):  
N. G. Nicolis ◽  
J. L. Barreto ◽  
D. G. Sarantites ◽  
R. J. Charity ◽  
L. G. Sobotka ◽  
...  
Keyword(s):  
Compound Nucleus ◽  
Cross Sections ◽  
Detection System ◽  
Good Description ◽  
Evaporation Residue ◽  
Fusion Reactions ◽  
Fusion Model ◽  
Fusion Data ◽  
Spin Distributions ◽  
Bombarding Energy

The population of evaporation residue entry states in the decay of the compound nucleus 160Er*(54 MeV) is investigated in a cross-bombardment employing the reactions 160 + 144Nd and 64Ni + 96Zr. Evaporation residue cross sections and entry state 7-ray fold distributions of the dominant exit channels were obtained for each reaction, using a 4π 7-ray detection system. An entrance-channel dependence of the 7-ray fold distributions of the xn products is observed. This effect is described successfully by the statistical model making use of compound nucleus angular momentum distributions obtained with a fusion model that provides a good description of the bombarding energy dependence of fusion data for both reactions. In accordance with recent findings on the decay of 164Yb*, it is suggested that the observed differences in the population of the dominant exit channels originate from the primary spin distributions rather than a possible dependence of the compound nucleus decay on the formation mode.

Evaporation residue cross sections in complete fusion reactions between52Cr-56Fe,63Cu-Ni and63Cu-Ag

1976 ◽  
Vol 278 (3) ◽  
pp. 265-267 ◽  
Author(s):  
S. Agarwal ◽  
H. Gauvin ◽  
D. Guerreau ◽  
H. Jungclas ◽  
Y. Beyec ◽  
...  
Keyword(s):  
Cross Sections ◽  
Evaporation Residue ◽  
Complete Fusion ◽  
Fusion Reactions

Entrance Channel Dependence of Production Cross Sections of Superheavy Nuclei in Cold Fusion Reactions

2005 ◽  
Vol 22 (4) ◽  
pp. 846-849 ◽  
Author(s):  
Feng Zhao-Qing ◽  
Jin Gen-Ming ◽  
Fu Fen ◽  
Zhang Feng-Shou ◽  
Jia Fei ◽  
...  
Keyword(s):  
Cross Sections ◽  
Production Cross ◽  
Cold Fusion ◽  
Entrance Channel ◽  
Superheavy Nuclei ◽  
Fusion Reactions
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