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Hg and asymmetric fission of neutron-deficient pre-actinidesJhingan, A.*; Andreyev, A. N.; 他28名*
Physical Review C, 106(4), p.044607_1 - 044607_9, 2022/10
被引用回数：13 パーセンタイル：76.48(Physics, Nuclear)Fission of Hg was induced by fusion of 
Xe and 
Fe. The two fragments were detected in coincidence using VAMOS++ supplemented with a new SEcond Detection arm. For the first time in the pre-actinide region, access to the pre-neutron mass and total kinetic energy distributions, and the simultaneous isotopic identification of one the fission fragment, was achieved. The present work describes the experimental approach, and discusses the pre-neutron observables in the context of an extended asymmetric fission island located southwest of 
Pb. A comparison with different models is performed, demonstrating the importance of this new asymmetric-fission island for elaborating on driving effects in fission.
Schmitt, C.*; Lemasson, A.*; Schmidt, K.-H.*; Jhingan, A.*; Biswas, S.*; Kim, Y. H.*; Ramos, D.*; Andreyev, A. N.; Curien, D.*; Ciemala, M.*; et al.
Physical Review Letters, 126(13), p.132502_1 - 132502_6, 2021/04
被引用回数：29 パーセンタイル：83.40(Physics, Multidisciplinary)Isotopic distributions of fragments from fission of the neutron-deficient Hg nuclide are reported. This experimental observable is obtained for the first time in the region around lead using an innovative approach based on inverse kinematics and the coincidence between the large acceptance magnetic spectrometer VAMOS++ and a new detection arm close to the target. The average fragment 
ratio and prompt neutron 
multiplicity are derived and compared with current knowledge from actinide fission. A striking consistency emerges, revealing the unexpected dominant role of the proton subsystem with atomic number between the 
= 28 and 50 magic numbers. The origin of nuclear charge polarization in fission and fragment deformation at scission are discussed.
