Fission probabilities across the π-nucleon delta resonance

: Cross-sections for the π + -induced fission of 209 Bi and 235 U have been measured in small steps across the 3-3 resonance to search for any mechanisms that might signal a change in the reaction mechanism across a region where strong coupling of available energy into nuclear excitation can be expected. The bismuth data are found to be in good agreement with a statistical calculation not including new mechanisms.