Effect of the Entrance Channel on the Fission of the Compound Nucleus(Nuclear Physics)

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概要

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• The effects of entrance channel with different projectile and target nuclei combinations on the fission of the ^<220>_<90>Th^*, ^<254>_<102>No^* and ^<256>_<104>Rf^* compound nuclei are investigated. The dependence of the de-excitation of the compound nucleus on the dynamics of the entrance channel is analyzed for the first time. We find that the fission branching ratio Г_f/Г_<tot> of the compound nucleus formed in the two different reactions with massive nuclei is different due to the dynamical effects in the entrance channel even at the same excitation energy E^*. It is caused by the different partial fusion cross section σ^<fus>_l(E) for those reactions. Consequently, the excitation function of evaporation residues measured in such reactions is strongly related to the effect of the entrance channel. This phenomenon is explained by the dependence of the capture and fusion cross sections on the orbital angular momentum of collision.

• 社団法人日本物理学会の論文
• 2005-01-15

著者

• Nasirov Avazbek

  Department Of Heavy Ion Physics Institute Of Nuclear Physics:joint Institute For Nuclear Research

• FAZIO Giovanni

  INFN, Sezione di Catania, and Dipartimento di Fisica dell'Universita di Messina

• GIARDINA Giorgio

  INFN, Sezione di Catania, and Dipartimento di Fisica dell'Universita di Messina

• LAMBERTO Antonino

  INFN, Sezione di Catania, and Dipartimento di Fisica dell'Universita di Messina

• SACCA Carmelo

  Dipartimento di Scienze della Terra dell'Universita di Messina

• PALAMARA Rocco

  Dipartimento PAU dell'Universita di Reggio Calabria

• MUMINOV Akhtam

  Heavy Ion Physics Department, INP

• NASIROV Avazbek

  Heavy Ion Physics Department, INP

• HANAPPE Francis

  Universite Libre de Bruxelles

• MATERNA Thomas

  Universite Libre de Bruxelles

• STUTTGE Louise

  Institut de Recherches Subatomiques

• Palamara Rocco

  Dipartimento Pau Dell'universita Di Reggio Calabria

• Giardina Giorgio

  Infn Sezione Di Catania:dipartimento Di Fisica Dell'universita Di Messina

• Sacca Carmelo

  Dipartimento Di Scienze Della Terra Dell'universita Di Messina

• Muminov Akhtam

  Department Of Heavy Ion Physics Institute Of Nuclear Physics

• Fazio Giovanni

  Infn Sezione Di Catania:dipartimento Di Fisica Dell'universita Di Messina

• PAVLIY Konstantin

  Heavy Ion Physics Department, INP

• Hanappe F

  Universite Libre De Bruxelles

• Stuttge L

  Inst. Recherches Subatomiques Strasbourg Fra

• Lamberto Antonino

  Infn Sezione Di Catania And Dipartimento Di Fisica Dell'universita Di Messina

• Pavliy Konstantin

  Heavy Ion Physics Department Inp

• Lamberto Antonino

  INFN, Sezione di Catania, and Dipartimento di Fisica dell'Universita di Messina

関連論文

• Entrance Channel Effect on the Formation of Heavy and Superheavy Nuclei (Nuclear Physics)
• Entrance Channel Effect on the Formation of Heavy and Superheavy Nuclei
• Problems of Dynamical Calculation for Synthesis of Superheavy Elements
• Effect of the Entrance Channel on the Fission of the Compound Nucleus(Nuclear Physics)
• Experimental Evidence of Shell Effects in the Fission Time of Heavy Nuclei : Nuclei
• The (α, ^6Li) Reaction Mechanism at E_α=27.2 MeV
• The P_ ^5He Level
• On the Broad First Excited ^5He State
• Role of the Target Orientation Angle and Orbital Angular Momentum in the Evaporation Residue Production(Nuclear physics)
• Angular Distribution of the Fission Fragments as a Probe for the Shell Effects
• Angular Distribution of the Fission Fragments as a Probe for the Shell Effects
• The Even-Spin Positive-Parity ^8Be Levels in the 20 MeV Region Observed by the ^7Li (d,αα)n Reaction
• The 5.65 MeV ^6Li Level Width by the ^7Li(^3He,αd)α Reaction at E(^3He)=11.5 MeV
• Role of the Target Orientation Angle and Orbital Angular Momentum in the Evaporation Residue Production

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