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Neutron capture yields and resonance parameters of dysprosium isotopes measured at Japan Proton Accelerator Research Complex

  • S. G. Shin
  • Y. U. Kye
  • W. Namkung
  • M. H. Cho
  • Y. -R. Kang
  • M. W. Lee
  • G. N. Kim
  • T. -I. Ro
  • J. E. Lee
  • T. Katabuchi
  • K. Terada
Regular Article - Experimental Physics
  • 15 Downloads

Abstract.

Neutron capture yields of dysprosium isotopes (161Dy, 162Dy, 163Dy, and 164Dy) were measured using the time-of-flight method with a NaI(Tl) spectrometer locate at 27.9m from the spallation neutron target in the ANNRI beamline at the Materials and Life Science Experimental Facility of the Japan Proton Accelerator Research Complex. The resonance parameters were determined using the multilevel R-matrix Bayesian code SAMMY in the neutron energy range of 1 to 300eV. Five resonances of the 161Dy isotope, reported by Shin et al. but not presented in ENDF/B-VII.1, were confirmed in this study. One resonance of the 164Dy isotope presented in ENDF/B-VII.1 was not observed in this study. The measured average level spacings were \(2.31\pm 0.23\) eV for 161Dy and \(6.91\pm 0.69\) eV for 163Dy. The statistical distributions of the resonance parameters reasonably agreed with the Porter-Tomas distributions and multiple exit channel theory.

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Copyright information

© SIF, Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • S. G. Shin
    • 1
  • Y. U. Kye
    • 1
  • W. Namkung
    • 1
  • M. H. Cho
    • 1
  • Y. -R. Kang
    • 2
  • M. W. Lee
    • 2
  • G. N. Kim
    • 3
  • T. -I. Ro
    • 4
  • J. E. Lee
    • 4
  • T. Katabuchi
    • 5
  • K. Terada
    • 5
  1. 1.Division of Advanced Nuclear EngineeringPohang University of Science and TechnologyPohangRepublic of Korea
  2. 2.Research Center, Dongnam Institute of Radiological and Medical SciencesBusanRepublic of Korea
  3. 3.Department of PhysicsKyungpook National UniversityDaeguRepublic of Korea
  4. 4.Dong-A University, Department of PhysicsBusanRepublic of Korea
  5. 5.Laboratory for Advanced Nuclear EnergyTokyo Institute of TechnologyTokyoJapan

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