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Activation cross section and isomeric cross-section ratio for the (n,2n) reaction on 132,134Ba

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Published/Copyright: April 19, 2017
Radiochimica Acta
From the journal Radiochimica Acta Volume 105 Issue 10

Abstract

Cross sections of the 132Ba(n,2n)131m,gBa and 134Ba(n,2n)133m,gBa reactions and their isomeric cross section ratios σm/σg have been measured by means of the activation technique at three neutron energies in the range 13−15 MeV. BaCO3 samples and Nb monitor foils were activated together to determine the reaction cross section and the incident neutron flux. The quasimonoenergetic neutrons beam were produced via the 3H(d,n)4He reaction at the Pd-300 Neutron Generator of the Chinese Academy of Engineering Physics (CAEP). The activities induced in the reaction products were measured using high−resolution γ ray spectroscopy. The pure cross section of the ground-state was derived from the absolute cross section of the metastable state and the residual nuclear decay analysis. Cross sections were also evaluated theoretically using the numerical nuclear model code, TALYS-1.8 with different level density options at neutron energies varying from the reaction threshold to 20 MeV. Results are discussed and compared with the corresponding literature.

Keywords: Barium; neutron induced reaction cross sections; excitation function; TALYS-1.8

Acknowledgement

We would like to thank the Intense Neutron Generator group at the Chinese Academy of Engineering Physics for performing the irradiations and Professor Guoren Yue at Key Laboratory of Hexi Corridor Resources Utilization of Gansu for measuring the sample purity. This work was supported by the National Natural Science Foundation of China (Grant No. 11565012).

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Received: 2017-1-25
Accepted: 2017-2-28
Published Online: 2017-4-19
Published in Print: 2017-10-26

©2017 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Activation cross section and isomeric cross-section ratio for the (n,2n) reaction on 132,134Ba
  3. Measurement of photo-neutron cross sections and isomeric yield ratios in the 89Y(γ,xn)89−x Y reactions at the bremsstrahlung end-point energies of 65, 70 and 75 MeV
  4. Production, separation and target preparation of 171Tm and 147Pm for neutron cross section measurements
  5. Solid phase extraction of uranium from phosphoric acid: kinetic and thermodynamic study
  6. Natural silica sand modified by calcium oxide as a new adsorbent for uranyl ions removal from aqueous solutions
  7. Radiochemical separation of 231Pa from siliceous cake prior to its determination by gamma ray spectrometry
  8. Investigation of selenium compounds as targets for 76,77Br production using protons of energies up to 34 MeV
  9. Attenuation properties of radiation shielding materials such as granite and marble against γ-ray energies between 80 and 1350 keV
  10. Controlled release fertilizers using superabsorbent hydrogel prepared by gamma radiation
https://doi.org/10.1515/ract-2017-2768
Keywords for this article
Barium; neutron induced reaction cross sections; excitation function; TALYS-1.8

Articles in the same Issue

  1. Frontmatter
  2. Activation cross section and isomeric cross-section ratio for the (n,2n) reaction on 132,134Ba
  3. Measurement of photo-neutron cross sections and isomeric yield ratios in the 89Y(γ,xn)89−x Y reactions at the bremsstrahlung end-point energies of 65, 70 and 75 MeV
  4. Production, separation and target preparation of 171Tm and 147Pm for neutron cross section measurements
  5. Solid phase extraction of uranium from phosphoric acid: kinetic and thermodynamic study
  6. Natural silica sand modified by calcium oxide as a new adsorbent for uranyl ions removal from aqueous solutions
  7. Radiochemical separation of 231Pa from siliceous cake prior to its determination by gamma ray spectrometry
  8. Investigation of selenium compounds as targets for 76,77Br production using protons of energies up to 34 MeV
  9. Attenuation properties of radiation shielding materials such as granite and marble against γ-ray energies between 80 and 1350 keV
  10. Controlled release fertilizers using superabsorbent hydrogel prepared by gamma radiation
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