Proton and alpha evaporation spectra in low energy 12C and 16O induced reactions

Pramana

V M Datar¹  H H Oza¹  A Mitra¹  D R Chakrabarty¹  Suresh Kumar¹  E T Mirgle1¹ 

[1] Nuclear Physics Division, Bhabha Atomic Research Centre, Mumbai 400 085, India$$

关键词: Evaporation spectra;    statistical model;    evaporation bump;    fusion reaction.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

Proton and alpha particle spectra have been measured in the 12C+93Nb and 12C+58Ni reactions at E(12C) = 40 and 50 MeV and in the 16O+93Nb reaction at E(16O) = 75 MeV. The spectra are compared with the statistical model calculations. The shapes of the calculated spectra are in agreement with experimental data except for the alpha spectrum in the 12C+93Nb reaction at 40 MeV. The observed evaporation bump is at ∼ 2 MeV lower energy compared to the calculated one. This discrepancy could imply alpha particle emission from a deformed configuration before compound nucleus formation at this near Coulomb barrier beam energy.

【 授权许可】

Unknown