Capture and fission analysis of various superheavy isotopes with ACN=258-280  

作　　者：Gurjit Kaur Manoj K Sharma 

机构地区：[1]School of Physics and Materials Science,Thapar Institute of Engineering and Technology,Patiala—147004,Punjab,India

出　　处：《Communications in Theoretical Physics》2020年第2期65-74,共10页理论物理通讯（英文版）

基　　金：financial support from the UGC-DAE Consortium for Scientific Research,F.No.UGC-DAE-CSR-KC/CRS/19/NP09/0920;the INSPIRE-fellowship(grant no.DST/INSPIRE/03/2015/000199).

摘　　要：The capture and fission analysis of heavy ion induced fusion reactions leading to the formation of Z=107-111 superheavy nuclei has been carried out.Attempts have been made to analyze the synthesis traits,such as excitation functions,formation probabilities,barrier characteristics etc.The l-summed Wong model provides a decent description of available data on capture(σCap)and fusion-fission(σff)cross-sections and hence is exploited to make relevant predictions for future experiments.The capture and fusion-fission excitation functions are predicted for the least explored region of superheavy nuclei(SHN)i.e.Z=107-111.The role of massasymmetry(η),Coulomb factor(ZPZT)deformation and orientations,Businari-Gallone massasymmetry(αBG)fission barrier(Bf)etc is duly explored.The present study concludes that the mass-asymmetric reactions involving 24Mg,30Si,and 36S projectiles are preferred for the synthesis of unknown isotopes of Z=107-111.Alternatively,the doubly magic 48Ca-projectile also provides a competing alternative to produce neutron-rich isotopes of the abovementioned SHN.The capture and fission analysis of heavy ion induced fusion reactions leading to the formation of Z=107-111 superheavy nuclei has been carried out.Attempts have been made to analyze the synthesis traits,such as excitation functions,formation probabilities,barrier characteristics etc.The l-summed Wong model provides a decent description of available data on capture(σCap) and fusion-fission(σff) cross-sections and hence is exploited to make relevant predictions for future experiments.The capture and fusion-fission excitation functions are predicted for the least explored region of superheavy nuclei（SHN） i.e.Z=107-111.The role of massasymmetry（η）,Coulomb factor（ZPZT） deformation and orientations,Businari-Gallone massasymmetry(αBG) fission barrier（Bf） etc is duly explored.The present study concludes that the mass-asymmetric reactions involving 24Mg,30Si,and 36S projectiles are preferred for the synthesis of unknown isotopes of Z=107-111.Alternatively,the doubly magic 48Ca-projectile also provides a competing alternative to produce neutron-rich isotopes of the abovementioned SHN.

关 键 词：CAPTURE and FISSION CROSS-SECTION compound nucleus formation probability QUASI-FISSION 

分 类 号：O571.6[理学—粒子物理与原子核物理]