Investigation of on properties and evaporation residue measurement in the reactions using 238U target nucleus

  • Fragment mass distributions for fission after full momentum transfer were measured in the reactions of 30Si,34,36 S,31P,40Ar + 238U at bombarding energies around the Coulomb barrier. Mass distributions change significantly as a function of incident beam energy. The asymmetric fission probability increases at sub-barrier energy. The phenomenon is interpreted as an enhanced quasifission probability owing to orientation effects on fusion and/or quasifission. The evaporation residue (ER) cross sections were measured in the reactions of 30Si + 238U and 34S + 238U to obtain information on fusion. In the latter reaction, significant suppression of fusion was implied. This suggests that fission events different from compound nucleus are included in the masssymmetric fragments. The results are supported by a model calculation based on a dynamical calculation using Langevin equation, in which the mass distribution for fusion-fission and quasifission fragments are separately determined.

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Author:Katsuhisa Nishio, Hiroshi Ikezoe, Sigurd HofmannORCiDGND, Dieter AckermannORCiD, Stanislav AntalicORCiD, Yoshihiro AritomoORCiD, Victor Fernandovich Comas-LijachevGND, Christoph E. DüllmannGND, Alexander GorshkovORCiDGND, Reimar GraegerGND, Kouichi HaginoORCiD, Sophia Heinz, Julio Antonio Heredia CardonaGND, Katsuhisa Hirose, Jadambaa KhuyagbaatarORCiD, Birgit KindlerORCiD, Ivan Kojouharov, Bettina LommelORCiD, Hiroyuki MakiiORCiD, Rido Mann, Shinichi Mitsuoka, Yuichiro NagameORCiD, Ichiro NishinakaORCiD, Tsutomu Ohtsuki, Andrey G. PopekoORCiD, Štefan Šaro, Matthias SchädelGND, Andreas TürlerORCiD, Yasuo Wakabayashi, Yosuke WatanabeORCiD, Alexander YakushevORCiD, Alexander V. YereminORCiD
Parent Title (English):EPJ Web of Conferences
Publisher:EDP Sciences
Place of publication:Les Ulis
Document Type:Article
Date of Publication (online):2011/10/19
Date of first Publication:2011/10/19
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Contributing Corporation:International Conference Fusion (5 : 2011 : Saint Malo)
Release Date:2023/02/19
Page Number:4
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCreative Commons - Namensnennung 4.0