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Effects of shell structure in reactions leading to the same compound nucleus or different isotopes | | A. K. Nasirov
; G. Fazio
; G. Giardina
; A. Lamberto
; R. Ruggeri
; A. Taccone
; A. I. Muminov
; F. Hanappe
; R. Palamara
; L. Stuttg’e
; | | Date: |
12 Nov 2001 | | Subject: | nucl-th nucl-ex | | Affiliation: | 1 and 3), G. Fazio , G. Giardina , A. Lamberto , R. Ruggeri , A. Taccone , A. I. Muminov , F. Hanappe , R. Palamara , L. Stuttg’e ( JINR, Dubna, Russia, INFN, Sezione di Catania and Dipartimento di Fisica dell’Universit`a di Messina, Ital | | Abstract: | The role of the entrance channel in fusion-fission reactions was studied by the theoretical analysis of the experimental evaporation residue excitation functions for reactions leading to the same compound nucleus. The evaporation residues cross sections for xn-channels were calculated in the frame of the combined dinuclear system concept and advanced statistical model. The revealed differences between experimental data on the evaporation residues in the ^{40}Ar+^{176}Hf, ^{86}Kr + ^{130}Xe and ^{124}Sn + ^{92}Zr reactions leading to the ^{216}Th^* compound nucleus are explained by the different spin distributions of compound nuclei which are formed. It is shown that the intrinsic fusion barrier B^*_{fus} and size of potential well are different for every entrance channel. | | Source: | arXiv, nucl-th/0111034 | | Services: | Forum | Review | PDF | Favorites | |
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