Conclusive evidence of quasifission in reactions forming the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mmultiscripts><mml:mi mathvariant="normal">Rn</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>210</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>compound nucleus
E. PrasadDepartment of Physics, University of Calicut, Calicut 673635, IndiaK. M. VarierDepartment of Physics, University of Calicut, Calicut 673635, IndiaR. G. ThomasNuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, IndiaP. SugathanInter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, IndiaA. JhinganInter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, IndiaN. MadhavanInter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, IndiaB. R. S. BabuDepartment of Physics, University of Calicut, Calicut 673635, IndiaRohit SandalDepartment of Physics, Panjab University, Chandigarh 160014, IndiaSunil KalkalDepartment of Physics and Astrophysics, Delhi University, Delhi 110007, IndiaS. AppannababuDepartment of Physics, Faculty of Science, The M.S. University of Baroda, Vadodara 390002, IndiaJ. GehlotInter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, IndiaK. S. GoldaInter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, IndiaS. NathInter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, IndiaA. M. VinodkumarDepartment of Physics, University of Calicut, Calicut 673635, IndiaBharat KumarInter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, IndiaB. V. JohnNuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, IndiaG. MohantoInter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110067, IndiaM. M. MusthafaDepartment of Physics, University of Calicut, Calicut 673635, IndiaRaghuvir SinghDepartment of Physics and Astrophysics, Delhi University, Delhi 110007, IndiaA. K. SinhaS. KailasNuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400085, India
2010lv
ABI
Аннотация
Fission fragment mass ratio distributions have been measured for the reactions $^{16}\mathrm{O}+^{194}\mathrm{Pt}$ and $^{24}\mathrm{Mg}+^{186}\mathrm{W}$, both leading to the same compound nucleus, $^{210}\mathrm{Rn}$, at near-barrier energies. The measured fission fragment mass ratio variances for $^{16}\mathrm{O}+^{194}\mathrm{Pt}$ and $^{24}\mathrm{Mg}+^{186}\mathrm{W}$ are compared with the calculations assuming compound nucleus formation. Mass variances of fragments from the $^{24}\mathrm{Mg}+^{186}\mathrm{W}$ reaction show a dramatic deviation from the compound nucleus behavior. This suggests strong evidence for onset of the quasifission process in this reaction.
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