Zeitschrift für Physik A Hadrons and Nuclei

, Volume 358, Issue 4, pp 377–378

Excitation function for the production of 265108 and 266109

  • S. Hofmann
  • F. P. Heßberger
  • V. Ninov
  • P. Armbruster
  • G. Münzenberg
  • C. Stodel
  • A. G. Popeko
  • A. V. Yeremin
  • S. Saro
  • M. Leino
Short note

DOI: 10.1007/s002180050343

Cite this article as:
Hofmann, S., Heßberger, F.P., Ninov, V. et al. Z Phys A - Particles and Fields (1997) 358: 377. doi:10.1007/s002180050343

Abstract

The excitation function for the production of266109 by the reaction 58Fe + 209Bi was investigated. Its position and width could be reproduced using the same values (E* = 13.9 MeV; FWHM=4.8 MeV) as inthe case of265108 produced by the reaction 58Fe + 208Pb. A cross-section maximum of (7.5 ± 2.7) pb was obtained. Referred to 265108, this value is reduced by a factor of 8.8 ± 3.3, that is more than the average reduction of cross-section by 3.7 per element. The hindrance factor of 2.4 ± 0.9 could be due to a specialization energy in the fusion process by the unpaired proton of 209Bi in the h9/2 orbital. A total of twelve decay chains of 266109 was measured, resulting in a mean half-life of (1.7−0.4+0.6) ms. The new data confirm the decay data of the previously measured two decays of 266109.

PACS

21.10.Dr 23.60.+e 25.70.−z 27.90.+b 

Copyright information

© Springer-Verlag 1997

Authors and Affiliations

  • S. Hofmann
    • 1
  • F. P. Heßberger
    • 1
  • V. Ninov
    • 1
  • P. Armbruster
    • 1
  • G. Münzenberg
    • 1
  • C. Stodel
    • 1
  • A. G. Popeko
    • 2
  • A. V. Yeremin
    • 2
  • S. Saro
    • 2
  • M. Leino
    • 4
  1. 1.Gesellschaft für Schwerionenforschung mbHDarmstadtGermany
  2. 2.Flerov Laboratory of Nuclear ReactionsJINRDubnaRussia
  3. 3.Department of Nuclear PhysicsComenius UniversityBratislavaSlovakia
  4. 4.Department of PhysicsUniversity of JyväskyläJyväskyläFinland

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