2011年
Investigation of fission properties and evaporation residue measurement in the reactions using U-238 target nucleus
5TH INTERNATIONAL CONFERENCE FUSION11
- 巻
- 17
- 号
- 17
- 開始ページ
- 09005
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(国際会議プロシーディングス)
- DOI
- 10.1051/epjconf/20111709005
- 出版者・発行元
- E D P SCIENCES
Fragment mass distributions for fission after full momentum transfer were measured in the reactions of Si-30,S-34,S-36,P-31,Ar-40 + U-238 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 Si-30 + U-238 and S-34 + U-238 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 mass-symmetric 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.
- リンク情報
- ID情報
-
- DOI : 10.1051/epjconf/20111709005
- ISSN : 2100-014X
- Web of Science ID : WOS:000305937100042