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<p>A method has been developed for the separation of the radioisotope <sup>185</sup>Os from a rhenium target of natural isotopic composition irradiated with 30&#xa0;MeV protons. The irradiated rhenium powder was dissolved in 3&#xa0;M HNO<sub>3</sub>, and the solution was then adjusted to 3&#xa0;M NaOH. The resulting solution was passed through a column packed with the extraction chromatographic resin TEVA Resin. Rhenium was retained on the column, whereas osmium was not. The separation factor (<i>β</i>) for rhenium and osmium was approximately 1∙10<sup>3</sup>. The radiochemical yield of osmium amounted to 96% ± 2% with a relative uncertainty of 2.3%.</p>

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Production of the radiotracer 185Os by irradiating a natural rhenium target with protons

  • 期刊论文

  • 发表日期：

    2026年8月4日

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  • T. M. Fazliev,
  • E. S. Kormazeva,
  • T. M. Kuznetsova,
  • V. A. Zagryadskiy,
  • V. I. Novikov,
  • I. N. Popov,
  • R. A. Aliev

摘要

A method has been developed for the separation of the radioisotope 185Os from a rhenium target of natural isotopic composition irradiated with 30 MeV protons. The irradiated rhenium powder was dissolved in 3 M HNO3, and the solution was then adjusted to 3 M NaOH. The resulting solution was passed through a column packed with the extraction chromatographic resin TEVA Resin. Rhenium was retained on the column, whereas osmium was not. The separation factor (β) for rhenium and osmium was approximately 1∙103. The radiochemical yield of osmium amounted to 96% ± 2% with a relative uncertainty of 2.3%.