Reaction mechanisms in the system<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Ne</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>20</mml:mn></mml:mrow></mml:mmultiscripts><mml:mrow><mml:mo>+</mml:mo></mml:mrow><mml:mmultiscripts><mml:mi mathvariant="normal">Ho</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>165</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>: Measurement and analysis of forward recoil range di

Singh, D.; Ali, Rahbar; Ansari, M. Afzal; Rashid, M. H.; Guin, R.; Das, S. K.

doi:10.1103/physrevc.79.054601

Cited by 18 publications

(16 citation statements)

References 21 publications

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“…Details of the experimental setup used for irradiation have been given in our earlier Ref. [22]. The mean energy of the 20 Ne ion beam incident at half the thickness on each foil in the stack was calculated from the energy degradation of the incident beam energy, using stopping power and range calculation software SRIM-2006 [28].…”

Section: B Irradiationsmentioning

confidence: 99%

“…Recent measurements [15][16][17][18][19][20][21][22] of excitation functions (EFs) and recoil range distributions (RRDs) in the forward direction, etc., for a large number of evaporation residues produced in heavy-ion (HI) reactions in various projectiletarget combinations have indicated the importance of CF and ICF processes at energies above the Coulomb barrier and below 10 MeV/nucleon. As a part of the ongoing program [22][23][24][25][26] to study the CF and ICF in heavy-ion reactions, this work has been undertaken and excitation functions for 18 evaporation residues produced in the 20 Ne + 59 Co system have been measured in the energy range ≈62-150 MeV, using the recoil-catcher technique followed by offline γ -spectroscopy.…”

Section: Introductionmentioning

confidence: 99%

“…As a part of the ongoing program [22][23][24][25][26] to study the CF and ICF in heavy-ion reactions, this work has been undertaken and excitation functions for 18 evaporation residues produced in the 20 Ne + 59 Co system have been measured in the energy range ≈62-150 MeV, using the recoil-catcher technique followed by offline γ -spectroscopy. In these measurements, special care has been taken to remove the precursor decay contributions in the production of several evaporation residues to get the independent production cross sections of the residues.…”

Section: Introductionmentioning

confidence: 99%

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Reaction mechanism in the20Ne+59Co system at 3--7 MeV/nucleon, and observation of entrance-channel mass-asymmetry

et al. 2011

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Incomplete fusion of 20 Ne with 59 Co has been investigated at 3-7 MeV/nucleon using the measurement and analysis of excitation functions. The recoil-catcher technique followed by offline gamma-ray spectroscopy has been employed. Evaporation residues are found to have contributions from precursor decays, which have been separated out from the measured cumulative cross sections of evaporation residues. Measured independent cross sections are compared with PACE-2 predictions. The PACE-2 calculations are carried out for evaporation residues formed in complete fusion (CF), and the parameters are optimized so as to reproduce the cross section of evaporation residues produced exclusively in CF, e.g., xn and pxn products. With these parameters, the predicted CF cross sections for alpha emission products are calculated. Any substantial enhancement in the experimental cross section over the PACE-2 prediction is taken as a signature of incomplete fusion (ICF). The analysis indicates the occurrence of incomplete fusion involving the breakup of 20 Ne into 16 O + 4 He and/or 12 C + 8 Be(2α) followed by fusion of one of the fragments with the target nucleus 59 Co. These data also suggest that the probability of incomplete fusion increases with the projectile energy. Moreover, the ICF probability is found to increase with entrance-channel mass-asymmetry of the projectile-target systems.

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Section: B Irradiationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Reaction mechanism in the20Ne+59Co system at 3--7 MeV/nucleon, and observation of entrance-channel mass-asymmetry

et al. 2011

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“…The major advances in the understanding of ICF dynamics were made after the charged particle-γ coincidence measurements by Inamura et al [3]. Some recent observations [4][5][6] show that at projectile energies above the Coulomb barrier, both the processes complete fusion (CF) and incomplete fusion (ICF) may be considered as dominant reaction mechanisms. Semiclassical theory of heavy ion interaction says that the CF and ICF processes may be categorized on the basis of input angular momentum imparted in the system.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Target Deformation on Incomplete Fusion Dynamics

Singh

Ali²,

Ansari

et al. 2015

EPJ Web of Conferences

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Abstract.To investigate the role of target deformation on incomplete fusion dynamics, a particle-gamma coincidence experiment has been performed at Inter University Accelerator Centre, New Delhi. Spin distributions for various evaporation residues populated via complete and incomplete fusion of 16 O with 124 Sn at 6.3MeV/nucleon have been measured. Experimentally measured spin distributions of the residues produced as incomplete fusion products associated with fast α and 2α-emission channels observed in forward cone are found to be distinctly different from those of the residues produced as complete fusion products. The mean value of input angular momentum J 0 for evaporation residues produced through xn channels (complete fusion products) is found to be J 0 ≈ 7ħ, while the mean value of input angular momentum J 0 for the residues produced through direct αxn and 2αxn channels (incomplete fusion products) in forward cone, are found to be J 0 ≈ 9ħ and ≈ 12 ħ respectively for 16 O + 124 Sn (spherical) system [7]. The mean value of input angular momentum J 0 for the system 16 O + 169 Tm (deformed) reported in ref. [8], are found to be ≈10ħ for xn-channels (complete fusion products) and for direct αxn and 2αxn channels (incomplete fusion products) the value of J 0 approaches to ≈ 13ħ and ≈16ħ, respectively. The mean values of the input angular momentum observed for xn (complete fusion products), αxn and 2αxn (incomplete fusion products) in 16 O + 124 Sn (spherical) system are smaller than that of the mean values of the input angular momentum observed for xn (complete fusion products), αxn and 2αxn (incomplete fusion products) in 16 O + 169 Tm (deformed) system. The comparison of data inferred that the mean values of the input angular momentum are smaller in case of spherical target than that of deformed target at same projectile energy of 16 O-ion beam. It means that the target deformation affect the incomplete fusion dynamics.

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“…In case of Cf reaction the projectile completely fuses with the target nucleus and the highly excited nuclear system decays by evaporating low energy nucleons and alpha particles. In the ICf reaction process, which is characterized by the partial fusion of the projectile with the target, the projectile is assumed to break-up into two fragments and one of the fragments fuses with the target nucleus while remnant moves in the forward direction [2,7,8]. the first experimental evidence of ICf reactions was given by Britt and Quinton [10], who observed the breakup of the incident projectiles like 12 C, 14 N and 16 O into alpha clusters in an interaction with the target nucleus at ≈ 10.5 MeV/A bombarding energy.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Critical Angular Momentum on Incomplete Fusion Dynamics

Singh¹,

Linda²,

Giri³

et al. 2015

JNP

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An attempt has been made to calculate the critical angular momentum ( crit) from the experimentally measured total ER cross-sections and are compared with Bass model predictions (using PACE-2). A comparison between experimentally measured and theoretically calculated critical angular momentum for the systems 16 O + 45 Sc and 16 O + 74 ge has been done. In case of 16 O + 45 Sc system, it is found that the experimentally measured  crit values are slightly lower than the theoretically calculated values at projectile energies from 66 to 114 MeV. the low values of  crit associated with ICf-channels for this system suggests that at these projectile energies, ICf may not be strictly associated with peripheral collision. Instead there appears to be deeper penetration of the projectile with the target at these beam energies. But for the system 16 O + 74 ge at projectile energies from 65 to 112 MeV, the experimentally measured  crit-values are consistent with theoretically calculated values. this shows that  crit-values associated with ICf channels for this system suggests that at these projectile energies, ICf may be associated with peripheral collision.

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Reaction mechanisms in the systemNe20+Ho165: Measurement and analysis of forward recoil range di

Cited by 18 publications

References 21 publications

Reaction mechanism in the20Ne+59Co system at 3--7 MeV/nucleon, and observation of entrance-channel mass-asymmetry

Reaction mechanism in the20Ne+59Co system at 3--7 MeV/nucleon, and observation of entrance-channel mass-asymmetry

Effect of the Target Deformation on Incomplete Fusion Dynamics

Effect of the Critical Angular Momentum on Incomplete Fusion Dynamics

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