Experimental Evidence for Common Driving Effects in Low-Energy Fission from Sublead to Actinides
DUDOUET, J.
Centre de Sciences Nucléaires et de Sciences de la Matière [CSNSM]
Institut de Physique des 2 Infinis de Lyon [IP2I Lyon]
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Centre de Sciences Nucléaires et de Sciences de la Matière [CSNSM]
Institut de Physique des 2 Infinis de Lyon [IP2I Lyon]
Language
en
Article de revue
This item was published in
Physical Review Letters. 2021, vol. 126, p. 132502
American Physical Society
English Abstract
Isotopic distributions of fragments from fission of the neutron-deficient 178Hg nuclide are reported. This experimental observable is obtained for the first time in the region around lead using an innovative approach based ...Read more >
Isotopic distributions of fragments from fission of the neutron-deficient 178Hg 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 þ þ and a new detection arm close to the target. The average fragment N=Z ratio and prompt neutron Mn 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 Z ¼ 28 and 50 magic numbers. The origin of nuclear charge polarization in fission and fragment deformation at scission are discussed.Read less <
Origin
Hal imported