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Analysis of fission and fragmentation events produced in Ag and Br nuclei by interaction of bremsstrahlung beams in the energy range (1.0÷5.5) GeV

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Il Nuovo Cimento A (1965-1970)

Summary

Nuclear emulsion plates Ilford-K0 exposed to (1.0÷5.5) GeV bremsstrahlung beams in order to study photoinduced break-up of Ar, Br nuclei have been processed to produce visible fission tracks for track analysis with optical microscope. Track-length distributions, angular distributions and angular correlations of the produced fragments obtained at six end-point bremsstrahlung energies are presented and discussed. The analysis of the data shows that the recorded events are produced by two different reaction mechanisms, namely fission and fragmentation. The absolute mean cross-sections per photon for fragmentation, binary and ternay fission of Ag, Br targets in the energy range investigated have been measured. Absolute mean cross-sections per photon and corresponding fissilities have been evaluated for binary fission of Ag and Br and compared with literature data.

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Authors and Affiliations

  1. Dipartimento di Scienze e Tecnologie Chimiche, Università di Roma «Tor Vergata», Via O. Raimondo, 00173, Roma

    M. L. Terranova

  2. INFN, Sezione di Roma 2, Roma

    M. L. Terranova

  3. Instituto de Física, Universidade Federal Fluminense, Outeiro De Saõ Joaõ Batista s/n, 24210, Niteroi, RJ, Brasil

    J. D. Pinheiro Filho & E. S. de Almeida

  4. Conselho Nacional de Desenvolvimento Cientifico e Tecnologico-CNPq, Centro Brasileiro de Pesquisas Físicas-CBPF, Rua Xavier Sigaud, 22290, Rio de Janeiro, Brasil

    J. B. Martins & O. A. P. Tavares

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Terranova, M.L., Pinheiro Filho, J.D., de Almeida, E.S. et al. Analysis of fission and fragmentation events produced in Ag and Br nuclei by interaction of bremsstrahlung beams in the energy range (1.0÷5.5) GeV. Nuov Cim A 104, 1429–1440 (1991). https://doi.org/10.1007/BF02817425

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  • DOI: https://doi.org/10.1007/BF02817425

PACS 25.85

PACS 25.85.Jg

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