Average angular momentum in fusion reactions deduced from evaporation-residue cross sections

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).

Calculation of evaporation residue cross sections for the synthesis of superheavy nuclei in hot fusion reactions

Nuclear Physics A ◽

10.1016/j.nuclphysa.2013.04.010 ◽

2013 ◽

Vol 909 ◽

pp. 36-49 ◽

Cited By ~ 17

Author(s):

Jinjuan Zhang ◽

Chengbin Wang ◽

Zhongzhou Ren

Keyword(s):

Cross Sections ◽

Evaporation Residue ◽

Superheavy Nuclei ◽

Fusion Reactions

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

Canadian Journal of Physics ◽

10.1139/cjp-2019-0580 ◽

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.

Yields of evaporation residues and average angular momentum in heavy ion induced fusion reactions leading to compound nucleus96Ru

Pramana ◽

10.1007/bf02875375 ◽

1992 ◽

Vol 38 (3) ◽

pp. 291-312 ◽

Cited By ~ 3

Author(s):

M Dasgupta ◽

A Navin ◽

Y K Agarwal ◽

C V K Baba ◽

H C Jain ◽

...

Keyword(s):

Angular Momentum ◽

Heavy Ion ◽

Fusion Reactions ◽

Average Angular Momentum ◽

Evaporation Residues

Theoretical study of evaporation-residue cross sections for fusion reactions at energies near the Coulomb barrier

Physical Review C ◽

10.1103/physrevc.103.034605 ◽

2021 ◽

Vol 103 (3) ◽

Author(s):

Bing Wang ◽

Zi-Yang Yue ◽

Wei-Juan Zhao

Keyword(s):

Cross Sections ◽

Coulomb Barrier ◽

Theoretical Study ◽

Evaporation Residue ◽

Fusion Reactions

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

Nuclear Physics A ◽

10.1016/0375-9474(84)90634-1 ◽

1984 ◽

Vol 419 (3) ◽

pp. 571-588 ◽

Cited By ~ 48

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

No-capture breakup and incomplete fusion reactions induced by stable weakly bound nucleus 9Be

International Journal of Modern Physics E ◽

10.1142/s0218301316500439 ◽

2016 ◽

Vol 25 (06) ◽

pp. 1650043 ◽

Cited By ~ 1

Author(s):

S. A. Seyyedi

Keyword(s):

Angular Momentum ◽

Cross Sections ◽

Coulomb Barrier ◽

Fusion Reaction ◽

Classical Trajectory ◽

Breakup Reaction ◽

Incomplete Fusion ◽

Fusion Reactions ◽

Weakly Bound ◽

Barrier Energy

The reactions including the stable weakly bound nucleus 9Be have been studied using the classical trajectory model accompanied with the experimental breakup function and the Aage-Winther interaction potential (AW95). In these calculations, the no-capture breakup and the incomplete fusion cross-sections as well as their competition at around the Coulomb barrier have been investigated. Our calculations showed that at a given far-Coulomb-barrier energy the incomplete fusion reaction in different distributions of angular momentum and energies can dominate the no-capture breakup reaction. This dominating process is reversed at the near-barrier energies.

Orientation effects on evaporation residue cross sections inCa48-induced hot fusion reactions

Physical Review C ◽

10.1103/physrevc.90.014612 ◽

2014 ◽

Vol 90 (1) ◽

Cited By ~ 26

Author(s):

Long Zhu ◽

Zhao-Qing Feng ◽

Cheng Li ◽

Feng-Shou Zhang

Keyword(s):

Cross Sections ◽

Evaporation Residue ◽

Fusion Reactions ◽

Orientation Effects

Entrance-channel effects on the average angular momentum of compound nuclei produced in fusion reactions

Physical Review C ◽

10.1103/physrevc.32.1094 ◽

1985 ◽

Vol 32 (3) ◽

pp. 1094-1095 ◽

Cited By ~ 17

Author(s):

C. H. Dasso ◽

S. Landowne

Keyword(s):

Angular Momentum ◽

Entrance Channel ◽

Fusion Reactions ◽

Channel Effects ◽

Average Angular Momentum

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

HNPS Proceedings ◽

10.12681/hnps.2410 ◽

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.