Cascade exciton model analysis of energetic pion-induced fission of heavy nuclei: Target mass and projectile energy dependence (vol 30, 2150065, 2021)

A data bank of negative and positive (80-1665 MeV) pion-induced experimental fission cross-sections of heavy nuclei from Sn-119 to U-238 is compiled using present results and published data from the literature. Corresponding calculations of fission cross-sections, using the cascade exciton model (CEM) are also included in the compilation. Fission cross-sections compiled in the data bank are examined critically. Mass and energy dependences of fission cross-sections are analyzed. Fission cross-sections of U-238 targets are the highest. and scale down approximately, for other targets studied, with fissility, (z +/- 1)(2)/A. In the fissility expression, Z and A are atomic and mass numbers of the target while +/- 1 refer to positive and negative pion projectiles. The presented data bank is of interest for students and researchers involved in the investigation of energetic light particle-induced fission of heavy nuclei. Nuclear fission of heavy nuclei has been classified into three regimes. Phenomenological discussion of the fission process is also given.