Excitation function measurements have been done for the evaporation residues populating in the system 18O +144Sm. For this purpose, the stacked foil activation technique has been used subsequently accompanied by offline γ-ray spectrometry. The analysis of the experimental cross section of three evaporation residues 158Tm (p3n), 157Tm(p4n), and 155Ho(ap2n) has been donein the light of theoretical code PACE-4. Current findings demonstrate that the experimental cross sections of evaporation residues formed via xn and pxn-emission channels follow the PACE-4 predictions, confirming that these evaporation residues are produced exclusively by complete fusion. Similarly, the cross sections of the evaporation residues generated via α-emission pathways exhibit notable enhancement in contrast to the code predictions. The increase in cross sections seen can be credited to the fragmentation of the projectile 18O resulting in incomplete fusion. It has also been observed that there is a likelihood for the projectile to experience fragmentation i.e.,18O into 14C+ α increases as the energy of the projectile increases.
Keywords: Heavy ion, Coulomb barrier, CF and ICF, CCFULL, PACE-4
[This article belongs to Special Issue under section in Journal of Polymer and Composites(jopc)]
Mahato A, Singh D, Sharma N, et al. Effects of entrance channels on breakup fusion induced by F 19 projectiles. Physical Review C. 2022 Jul 19;106(1):014613.
Mahato A, Singh D, Giri PK, et al. Probing of incomplete fusion dynamics in N 14+ Sn 124 system and its correlation with various entrance channel effects. The European Physical Journal A. 2020 May; 56:1-5.
Giri PK, Singh D, Mahato A, et al. Systematic study of low-energy incomplete-fusion dynamics in the O 16 + Nd 148 system: Role of target deformation. Physical Review C. 2019 Aug 22;100(2):024621.
Britt HC, Quinton AR. Alpha particles and protons emitted in the bombardment of au 197 and bi 209 by c 12, n 14, and o 16 projectiles. Physical Review. 1961 Nov 1;124(3):877.
Inamura T, Ishihara M, Fukuda T, et al. Gamma-rays from an incomplete fusion reaction induced by 95 MeV 14N. Physics Letters B. 1977 May 9;68(1):51-4.
Wilczynski J, Siwek-Wilczynska K, Van Driel J, et al. Incomplete fusion reactions in the/sup 14/N+/sup 159/Tb system and a ”sum-rule model” for fusion and incomplete fusion reactions. Phys. Rev. Lett.;(United States). 1980 Aug 25;45(8).
Gerschel C. Proc. Int. Conf. on selected aspects of heavy ion reactions. InNucl. Phys. 1982 (Vol. 387, p. 297c). North-Holland Amsterdam.
Singh D, Linda SB, Giri PK, et al. Role of input angular momentum and target deformation on the incomplete-fusion dynamics in the O 16+ Sm 154 system at E Lab= 6.1 MeV/nucleon. Physical Review C. 2018 Jun 7;97(6):064604.
Gavron A. Statistical model calculations in heavy ion reactions. Physical Review C. 1980 Jan 1;21(1):230.
JP ZJ. SRIM-The stopping and range of ions in matter. Nucl. Instrum. Methods Phys. Res., Sect. B. 2010;268(11-12):1818-23.
E. T. Subramaniam, B. P. Ajith Kumar, R. K. Bhowmik, http://www.iuac.res.in/NIAS.
National Nuclear Data Center, Brookhaven National Laboratory https://www.nndc.bnl.gov/nudat3/
Ansari MA, Singh RK, Sehgal ML, et al. Isomeric cross-sections of In and Rh at neutron energies of a few MeV. Annals of Nuclear Energy. 1984 Jan 1;11(12):607-9.
Cavinato M, Fabrici E, Gadioli E, et al. Study of the reactions occurring in the fusion of C 12 and O 16 with heavy nuclei at incident energies below 10 MeV/nucleon. Physical Review C. 1995 Nov 1;52(5):2577.
Hagino K, Rowley N, Kruppa AT. A program for coupled-channel calculations with all order couplings for heavy-ion fusion reactions. Computer Physics Communications. 1999 Dec 1;123(1-3):143-52.
Canto LF, Junior DM, Gomes PR, et al. Reduction of fusion and reaction cross sections at near-barrier energies. Physical Review C. 2015 Jul 29;92(1):014626.
|Received||August 14, 2023|
|Accepted||August 31, 2023|
|Published||September 12, 2023|