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Recovery of hafnium radioisotopes from a proton irradiated tantalum target

  • Radiochemical Methods and Production of Radionuclides
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Abstract

The178m2Hf nucleus, with its long half-life (31 y) and high-spin isomeric state (16+) is desired for new and exotic nuclear physics studies. The Los Alamos Radioisotope Program irradiated a kilogram of natural tantalum at the Los Alamos Meson Physics Facility in early 1981. After fifteen years of decay, this target was ideal for the recovery of178m2Hf. There was more than a millicurie of178m2Hf produced during this irradiation and there has been a sufficient period of time for most of the other hafnium radioisotopes to decayed away. Traditionally, separation techniques for recovering hafnium isotopes from tantalum targets employ solvent extractions with reagents that are considered hazardous. These techniques are no longer condoned because they generate a mixed-waste (radioactive and hazardous components) that can not be treated for disposal. In this paper we describe a new and unique procedure for the recovery of hafnium radioisotopes from a highly radioactive, proton irradiated, tantalum target using reagents that do not contribute a hazardous waste component.

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Authors and Affiliations

  1. Los Alamos National Laboratory, 87545, Los Alamos, NM, USA

    W. A. Taylor, J. G. Garcia, V. T. Hamilton, R. C. Heaton, D. J. Jamriska, M. A. Ott, D. R. Phillips & S. D. Radzinski

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  1. W. A. Taylor
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  2. J. G. Garcia
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  3. V. T. Hamilton
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  4. R. C. Heaton
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  5. D. J. Jamriska
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  6. M. A. Ott
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  7. D. R. Phillips
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  8. S. D. Radzinski
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Taylor, W.A., Garcia, J.G., Hamilton, V.T. et al. Recovery of hafnium radioisotopes from a proton irradiated tantalum target. J Radioanal Nucl Chem 236, 155–157 (1998). https://doi.org/10.1007/BF02386334

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  • DOI: https://doi.org/10.1007/BF02386334

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