Incomplete fusion in ¹⁶O+¹⁵⁹Tb

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• 作者：Vijay R. Sharma^a ; ^{phy.vijayraj@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Pushpendra P. Singh^b ; Mohd. Shuaib^a ; Abhishek Yadav^c ; Indu Bala^c ; Manoj K. Sharma^d ; S. Gupta^e ; D.P. Singh^f ; R. Kumar^c ; S. Muralithar^c ; R.P. Singh^c ; B.P. Singh^a ; ^{bpsinghamu@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; R. Prasad^a ; R.K. Bhowmik^c
• 关键词：Particle-γ coincidence technique ; Heavy-ion induced complete and incomplete fusion processes ; Spin distribution and feeding intensity measurement
• 刊名：Nuclear Physics A
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：946
• 期：Complete
• 页码：182-193
• 全文大小：956 K

文摘

In heavy-ion induced reactions, incomplete fusion (ICF) has been found to be a process of greater importance and of distinct nature even at slightly above the barrier energies where complete fusion (CF) is supposed to be dominant. However, the studies are limited to a few projectile target combinations only. To confirm the distinctly different decay patterns observed in case of CF and ICF residues, and to understand the role of high ℓ-values in the onset of ICF, a particle-γ  -coincidence technique has been employed to measure spin-distributions and feeding intensity profiles of CF and ICF residues populated via science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0375947415002791&_mathId=si1.gif&_user=111111111&_pii=S0375947415002791&_rdoc=1&_issn=03759474&md5=cb8086478d1ac483729c81beac9f1c85" title="Click to view the MathML source">xn/pxn/αxn$x\mathrm{n}/\mathrm{p}x\mathrm{n}/\alpha x\mathrm{n}$-channels in ¹⁶O+¹⁵⁹Tb interactions at science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0375947415002791&_mathId=si2.gif&_user=111111111&_pii=S0375947415002791&_rdoc=1&_issn=03759474&md5=db29b1c00f986a08fcd54a4685ea1a4a" title="Click to view the MathML source">E_lab≈83.5±1.5${\mathrm{E}}_{\mathit{lab}}\approx 83.5\pm 1.5$, science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0375947415002791&_mathId=si11.gif&_user=111111111&_pii=S0375947415002791&_rdoc=1&_issn=03759474&md5=77a543cb72f184a5da84c5d54547141b" title="Click to view the MathML source">88.5±1.5$88.5\pm 1.5$, science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0375947415002791&_mathId=si4.gif&_user=111111111&_pii=S0375947415002791&_rdoc=1&_issn=03759474&md5=0a591d86707e67ea8fc4eee827f406bb" title="Click to view the MathML source">93.5±1.5$93.5\pm 1.5$ and science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0375947415002791&_mathId=si34.gif&_user=111111111&_pii=S0375947415002791&_rdoc=1&_issn=03759474&md5=b48ba8a1688e68d3b230dcb4a9192191" title="Click to view the MathML source">97.6±1.4 MeV$97.6\pm 1.4\text{MeV}$. The Gamma Detector Array and the Charged Particles Detector Array have been used to detect prompt γ-rays in coincidence with charged particles (p and α). CF-α and ICF-α channels have been identified from backward (B)- and forward (F)-α-gated-γ-spectra, respectively. Reaction dependent decay patterns (thus, the feeding intensity profiles) have been observed in different α emitting channels. The CF channels are found to be widely populated and strongly fed over a broad spin range. In case of ICF-α channels, narrow range feeding was observed only for high-spin states or the low spin states were not populated. The mean ℓ  -values involved in the production of ICF-science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0375947415002791&_mathId=si6.gif&_user=111111111&_pii=S0375947415002791&_rdoc=1&_issn=03759474&md5=d813830fe1cf9fc1898ff0ccb0084253" title="Click to view the MathML source">αxn$\alpha x\mathrm{n}$-channels are found to be higher than those involved in the production of CF-science?_ob=MathURL&_method=retrieve&_eid=1-s2.0-S0375947415002791&_mathId=si6.gif&_user=111111111&_pii=S0375947415002791&_rdoc=1&_issn=03759474&md5=d813830fe1cf9fc1898ff0ccb0084253" title="Click to view the MathML source">αxn$\alpha x\mathrm{n}$-channels associated with fusion-evaporation reactions.