2019 Impact factor 2.176
Hadrons and Nuclei


Eur. Phys. J. A 10, 69-71

Fission probabilities across the ${\pi}$-nucleon delta resonance

R.J. Peterson1, S. de Barros2, H. Schechter2, S.G. Mashnik3, A.G. daSilva4 and J.C. Suita4

1  Nuclear Physics Laboratory, University of Colorado, Boulder Co 80309-0446, USA
2  Instituto de Fisica, Universidade Federal do Rio de Janeiro, Cx. Postal 68.528, Rio de Janeiro, Brazil
3  T2 Los Alamos National Laboratory, Los Alamos, NM 87545, USA
4  Instituto de Engenharia Nuclear, Cx Postal 68550, Rio de Janeiro, Brazil

peterson@spectr.colorado.edu

(Received: 15 August 2000 / Revised version: 22 January 2000 Communicated by M. Garçon)

Abstract
Cross-sections for the $\pi^+$-induced fission of 209Bi and 235U 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.

PACS
25.80.Hp - Pion-induced reactions.
24.60.Dr - Statistical Compound-nucleus reactions.

© Società Italiana di Fisica, Springer-Verlag 2001