scholarly journals Complete and incomplete fusion in 9Be+124Sn system

2011 ◽  
Vol 1 (1) ◽  
pp. 131-134
Author(s):  
V. V. Parkar ◽  
R. Palit ◽  
Sushil K. Sharma ◽  
B. S. Naidu ◽  
P. K. Joshi ◽  
...  
Keyword(s):  
Cross Sections ◽  
Coulomb Barrier ◽  
Gamma Ray ◽  
Detection Technique ◽  
Incomplete Fusion ◽  
Complete Fusion ◽  
On Line ◽  
Complete And Incomplete Fusion

AbstractComplete and incomplete fusion cross-sections for the 9Be+124Sn system have been measured around the Coulomb barrier energies (ElabC.B=28 MeV) using the on-line gamma ray detection technique. The complete fusion cross-sections of this system have been compared with the two stable projectiles on the same 124Sn target to provide information on the projectile dependence. The brief comparison of the present 9Be+124Sn data with a comprehensive and recent study of the neighbouring system 9Be+144Sm is also given.

Projectile breakup effects in the fusion dynamics of 6,7Li +144,152Sm reactions around Coulomb barrier

2020 ◽  
Vol 29 (05) ◽  
pp. 2050029
Author(s):  
Manjeet Singh Gautam ◽  
Sukhvinder Duhan ◽  
Rishi Pal Chahal ◽  
Hitender Khatri ◽  
Suman B. Kuhar ◽  
...  
Keyword(s):  
Cross Section ◽  
Cross Sections ◽  
Coulomb Barrier ◽  
Incomplete Fusion ◽  
Complete Fusion ◽  
Cross Section Data ◽  
Suppression Factor ◽  
Model Calculations ◽  
Section Data ◽  
Breakup Channel

This work emphasized the role of the projectile breakup channel by studying the complete fusion (CF) and incomplete fusion (ICF) dynamics of [Formula: see text] reactions. The theoretical calculations for the chosen reactions have been done by opting for the coupled channel approach and the energy dependent Woods–Saxon potential (EDWSP) model. The below barrier fusion enhancements of the studied reactions are reasonably addressed by the outcomes of the adopted models, which in turn can be attributed to the couplings of nuclear structure degrees of freedom of the collision partners to their relative motion. In contrast, at above barrier energies, the CF cross-section data of the chosen reactions are found to be suppressed significantly when compared with the predictions made by using the present models. Interestingly, the fusion suppression factors of the given reactions can be minimized considerably with respect to the reported value when it is analyzed within the framework of the EDWSP model. For instance, in case of [Formula: see text] ([Formula: see text] reaction, the magnitude of fusion suppression factor is minimized up to 7% (13%) relative to the reported value whereas for [Formula: see text] ([Formula: see text] reaction, the fusion suppression factor is found to be less by 7% (8%) with reference to the reported value. Such suppression effects can be correlated with the low breakup threshold of alpha breakup channel associated with the loosely bound projectile. The projectiles being weakly bound systems split into two charged fragments and either of the breakup components is absorbed by the target resulting in the reduction of incoming flux going into fusion channel. The flux lost from the CF channel appears in the form of ICF yields. For [Formula: see text], total fusion (TF) cross-sections that are sum of CF and ICF cross-sections are also analyzed in conjunction with the EDWSP model and thus reasonably explained by the model calculations. In order to identify the ICF contribution, the ratio of ICF/TF cross-section data of [Formula: see text] reaction has been examined and thus properly addressed by using the EDWSP model. The presence of ICF component in TF cross-section clearly pointed out the breakup of projectile due to its loosely bound nature prior to the Coulomb barrier. Although ICF data of other systems are not available in the literature, a similar behavior is expected for ICF and TF data for [Formula: see text] and [Formula: see text] reactions.

Fragmentation analysis of 105Ag∗ nucleus governed via complete and incomplete fusion channels at Ec.m. = 89MeV

2020 ◽  
Vol 35 (12) ◽  
pp. 2050084
Author(s):  
Ishita Sharma ◽  
Manoj K. Sharma
Keyword(s):  
Cross Sections ◽  
Center Of Mass ◽  
Incident Beam ◽  
Heavy Ion ◽  
Incomplete Fusion ◽  
Cluster Decay ◽  
Complete Fusion ◽  
Center Of Mass Energy ◽  
Complete And Incomplete Fusion ◽  
Incident Beam Energy

A systematic study of dynamical aspects associated with heavy-ion-induced [Formula: see text] reaction is carried out at center-of-mass energy [Formula: see text] MeV. The complete fusion (CF) and incomplete fusion (ICF) contributions are estimated by using the dynamical cluster-decay model (DCM). The incomplete fusion component is examined by normalizing the incident beam energy for each of the breakup fragment. The fusion evaporation cross-sections that emerged from CF and ICF channels are duly addressed using the optimized value of neck-length parameter [Formula: see text]. Further, the mass yield of compound nuclei (CN) formed in the CF and ICF processes is analyzed with respect to angular momentum [Formula: see text] values. The DCM-based calculations indicate the possible contribution of deep inelastic collision (DIC) in the decay of [Formula: see text] at higher [Formula: see text] values, and DIC cross-sections are predicted which call for future validation.

INVESTIGATION OF INCOMPLETE FUSION IN 19F+159Tb REACTION AT BEAM ENERGY OF ~ 5 MeV/NUCLEON

2011 ◽  
Vol 20 (11) ◽  
pp. 2305-2315 ◽  
Author(s):  
AMIT KUMAR ◽  
K. SUDARSHAN ◽  
SUPARNA SODAYE ◽  
R. TRIPATHI ◽  
P. K. PUJARI
Keyword(s):  
Angular Momentum ◽  
Cross Sections ◽  
Significant Contribution ◽  
Gamma Ray ◽  
Incomplete Fusion ◽  
Gamma Ray Spectrometry ◽  
Complete Fusion ◽  
Rule Model ◽  
Evaporation Residues ◽  
Critical Angular Momentum

Formation cross-sections of evaporation residues have been measured in 19 F +159 Tb reaction at E lab =83, 88, 93, 98 and 103 MeV using recoil catcher technique followed by off-line gamma-ray spectrometry. Significant contribution from incomplete fusion has been observed at these low beam energies indicating the contribution to incomplete fusion from collision trajectories with angular momentum (l) less than the critical angular momentum for complete fusion (l cr (CF)) . Incomplete fusion cross-sections could be explained using a modified sum-rule model which allows effective competition from incomplete fusion for collision trajectories with l<l cr (CF) .

COMPLETE AND INCOMPLETE FUSION REACTIONS OF 16O WITH 75As AT INCIDENT ENERGIES BELOW 7 MeV/A

2008 ◽  
Vol 17 (02) ◽  
pp. 407-418
Author(s):  
R. GUIN ◽  
S. K. SAHA
Keyword(s):  
Cross Sections ◽  
Beam Energy ◽  
Theoretical Calculations ◽  
Computer Code ◽  
Incomplete Fusion ◽  
Fusion Reactions ◽  
Range Distribution ◽  
Distribution Studies ◽  
Complete And Incomplete Fusion ◽  
Recoil Range

Excitation functions and differential recoil range distributions in the interaction of 16 O with 75 As have been measured to investigate complete and incomplete fusion reactions. The measured cross sections were compared with theoretical calculations using the computer code ALICE-91. The results indicated predominant incomplete fusion processes in the production of near target products. This was further confirmed by recoil range distribution studies of the products at 104 MeV of beam energy. The relative contributions of complete and incomplete fusion channels are estimated from recoil range distribution measurements.

Effects of projectile break-up on fusion cross sections at energies near and above the Coulomb barrier: A case of incomplete fusion

2018 ◽  
Vol 98 (1) ◽  
Author(s):  
Mohd. Shuaib ◽  
Vijay R. Sharma ◽  
Abhishek Yadav ◽  
Manoj Kumar Sharma ◽  
Pushpendra P. Singh ◽  
...  
Keyword(s):  
Cross Sections ◽  
Coulomb Barrier ◽  
Incomplete Fusion ◽  
Break Up

Analysis of complete, incomplete and total fusion data of 9Be +169Tm, 187Re, 209Bi reactions

2016 ◽  
Vol 31 (37) ◽  
pp. 1650201 ◽  
Author(s):  
Rajesh Kharab ◽  
Rajiv Chahal ◽  
Rajiv Kumar
Keyword(s):  
Cross Sections ◽  
Incident Beam ◽  
Incomplete Fusion ◽  
Selection Function ◽  
Complete Fusion ◽  
Relative Contribution ◽  
Fusion Data ◽  
Wong’S Formula ◽  
Incident Beam Energy ◽  
Total Fusion

We have analyzed the incomplete fusion (ICF), complete fusion (CF) and total fusion (TF) excitation functions for reactions induced by [Formula: see text] on [Formula: see text], [Formula: see text] and [Formula: see text] targets at near barrier energies using Wong’s formula in conjunction with the energy dependent Woods–Saxon potential. A phenomenological selection function is proposed to separate out the contribution of ICF and CF cross-sections in TF cross-section. The variation of relative contribution of ICF and CF in TF with respect to incident beam energy is very well reproduced through this approach.

INCOMPLETE FUSION IN THE EXCITATION FUNCTIONS OF 12C + 115In REACTIONS AT 4–7 MeV/NUCLEON

2006 ◽  
Vol 15 (01) ◽  
pp. 237-245 ◽  
Author(s):  
S. MUKHERJEE ◽  
A. SHARMA ◽  
S. SODAYE ◽  
A. GOSWAMI ◽  
B. S. TOMAR
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Energy Range ◽  
Coulomb Barrier ◽  
Incomplete Fusion ◽  
Simulation Code ◽  
Excitation Functions ◽  
Complete And Incomplete Fusion ◽  
Evaporation Residues ◽  
Fusion Products

We measured the excitation functions for nine evaporation residues for the 12C + 115In system in the energy range well beyond the Coulomb barrier. The experimental results are compared with the theoretical values calculated using the Monte Carlo simulation code PACE2. Several complete and incomplete fusion products are observed in the present study. It is observed that a definite amount of incomplete fusion contribution is present, even at the lowest energy. The results clearly show the incomplete fusion contributions in the iodine and antimony products.

scholarly journals Investigation of cross sections of deuteron induced nuclear reactions on selenium up to 50 MeV

2021 ◽  
Vol 57 (4) ◽  
Author(s):  
Ferenc Tárkányi ◽  
Sándor Takács ◽  
Ferenc Ditrói ◽  
Zoltán Szűcs ◽  
Károly Brezovcsik ◽  
...  
Keyword(s):  
Experimental Data ◽  
Cross Sections ◽  
Gamma Ray ◽  
Nuclear Reactions ◽  
Particle Energy ◽  
Gamma Ray Spectrometry ◽  
Excitation Functions ◽  
On Line ◽  
Theoretical Model Codes ◽  
Activation Cross Sections

AbstractIn the frame of a systematic study of deuteron induced nuclear reactions on all elements, activation cross sections on $$^{\mathrm {nat}}$$ nat Se were investigated. Excitation functions were measured up to 50 MeV particle energy for production of $$^{\mathrm {82}}$$ 82 Br(m$$+)$$ + ) ,$$^{\mathrm {80m}}$$ 80 m Br, $$^{\mathrm {77}}$$ 77 Br(m$$+)$$ + ) ,$$^{\mathrm {76}}$$ 76 Br(m$$+)$$ + ) , $$^{\mathrm {75}}$$ 75 Br, $$^{\mathrm {75}}$$ 75 Se(cum), $$^{\mathrm {73}}$$ 73 Se(cum), $$^{\mathrm {76}}$$ 76 As,$$^{\mathrm {74}}$$ 74 As, $$^{\mathrm {73}}$$ 73 As(cum), $$^{\mathrm {72}}$$ 72 As and $$^{\mathrm {71}}$$ 71 As(cum) by using the activation method through stacked foil irradiation followed by off-line gamma-ray spectrometry. The experimental results were compared to the earlier experimental data and to excitation functions calculated with the ALICE-D and EMPIRE-D theoretical model codes and data given in the TENDL-2019 on-line library based on TALYS calculations.

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