Journal of Radioanalytical and Nuclear Chemistry

, Volume 289, Issue 3, pp 945–952 | Cite as

Measurements of neutron total cross-sections and resonance parameters of niobium using pulsed neutrons generated by an electron linac

  • Taofeng Wang
  • Guinyun Kim
  • Man-Woo Lee
  • Kyung-Sook Kim
  • Moo-Hyun Cho
  • Heung-Sik Kang
  • Won Namkung


We measured neutron total cross-sections of natural niobium in the neutron energy region from 0.05 to 300 eV by using the time-of-flight method at the Pohang Neutron Facility, which consists of an electron linear accelerator, a water-cooled tantalum target with a water moderator, and a 12-m long time-of-flight path. A 6Li–ZnS(Ag) scintillator with a diameter of 12.5 cm and a thickness of 1.6 cm was used as a neutron detector, and a high purity natural niobium metallic disc with a diameter of 8.0 cm and a thickness of 15.0 mm thickness was used for the neutron transmission measurement. Notch filters composed of Co, In, Cd were used to estimate the background level and to calculate the length of neutron flight path. In order to reduce the gamma-ray background from bremsstrahlung and from neutron capture, we used a neutron-gamma separation system based on their different pulse shapes. The present measurement was compared with the existing experimental and the evaluated data. The resonance parameters of 93Nb isotope were obtained from the transmission by using the SAMMY code and were compared with other previous results.


Neutron total cross-sections Resonance parameters Niobium Time-of-flight method Pohang neutron facility Electron linac SAMMY fitting 



The authors would like to express their sincere thanks to the staff of the Pohang Accelerator Laboratory for the excellent operation of the electron linac and their strong support. This work was partly supported by Kyungpook National University Research Fund, 2010, by the National Research Foundation of Korea (NRF) through a grant provided by the Korean Ministry of Education, Science and Technology (MEST) in 2010 (Project No. 2010-0021375), and by the Institutional Activity Program of Korea Atomic Research Institute.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2011

Authors and Affiliations

  • Taofeng Wang
    • 1
  • Guinyun Kim
    • 1
  • Man-Woo Lee
    • 1
  • Kyung-Sook Kim
    • 1
  • Moo-Hyun Cho
    • 2
  • Heung-Sik Kang
    • 3
  • Won Namkung
    • 3
  1. 1.Department of PhysicsKyungpook National UniversityDaeguRepublic of Korea
  2. 2.Division of Advanced Nuclear EngineeringUniversity of Science and TechnologyPohangRepublic of Korea
  3. 3.Pohang Accelerator LaboratoryPohang University of Science and TechnologyPohangRepublic of Korea

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