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Investigation of selenium compounds as targets for 76,77Br production using protons of energies up to 34 MeV

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Veröffentlicht/Copyright: 3. Juni 2017
Radiochimica Acta
Aus der Zeitschrift Radiochimica Acta Band 105 Heft 10

Abstract

Selenium compounds of Zn, Sn and Cu were prepared using a conventional sintering method and the phase composition of each compound was investigated using X-ray diffraction. The compounds prepared were tested under variable irradiation and separation conditions for 76,77Br production. The activity of 77Br was measured as a function of proton beam current within the range 2–15 μA and the thermal stability of the irradiated compound was investigated. The results showed that the compounds ZnSe and Cu2Se are thermally more stable in comparison to the SnSe. The effects of several factors, such as temperature, gas flow rate and separation time, were studied to obtain the maximum separation yield of radiobromine by the dry distillation method. The data showed that the compound Cu2Se is the most suitable target for proton irradiation to produce 76,77Br at energies up to 20 MeV. A simplified method was used to prepare also CuSe, which was tested in irradiations with intermediate energy protons of beam currents up to 10 μA. The data of a typical production run using 17 MeV protons and the Cu2Se target are reported.

Keywords: 76,77Br Radioisotopes; distillation method; selenium compounds; radionuclide production; nuclear reactions

Acknowledgments

The major part of this work was carried out under an Egyptian–German bilateral agreement and we thank the relevant institutions in the two countries for financial support. We would also like to express our appreciation to the technical staff at the Forschungszentrum Jülich and the Egyptian Atomic Energy Authority in Cairo for their assistance. K.M. El-Azony thanks the Ministry of Education in Japan and the National Institute of Radiological Sciences in Chiba for providing him the possibility to perform a few investigations in the intermediate energy region.

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Received: 2017-1-31
Accepted: 2017-4-5
Published Online: 2017-6-3
Published in Print: 2017-10-26

©2017 Walter de Gruyter GmbH, Berlin/Boston

Artikel in diesem Heft

  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-2017-2770
Schlagwörter für diesen Artikel
76,77Br Radioisotopes; distillation method; selenium compounds; radionuclide production; nuclear reactions

Artikel in diesem Heft

  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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