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Detection of Plutonium-244 in Nature


Mass spectrometric measurements of plutonium isolated from Precambrian bastnasite confirm the presence of 244Pu in nature. Although the existence of 244Pu as an extinct radioactivity has been postulated to explain the xenon isotope ratios observed in meteorites, this is the first indication of its present existence in nature.

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  1. Alexander, E. C., Lewis, R. S., Reynolds, J. H., and Michel, M. C., Science, 172, 837 (1971).

    Article  ADS  CAS  Google Scholar 

  2. Kuroda, P. K., Nature, 187, 36 (1960).

    Article  ADS  CAS  Google Scholar 

  3. Fields, P. R., Friedman, A. M., Milsted, J., Lerner, J., Stevens, C. M., Metta, D., and Sabine, W. K., Nature, 212, 131 (1966).

    Article  ADS  CAS  Google Scholar 

  4. Bemis, C. E., Halperin, J., and Eby, R., J. Inorg. Nucl. Chem., 31, 599 (1969).

    Article  CAS  Google Scholar 

  5. Lovering, J. F., and Morgan, J. W., J. Geophys. Res., 69, 1979 (1964).

    Article  ADS  CAS  Google Scholar 

  6. Collected Radiochemical Procedures (edit. by Kleinberg, J.), Los Alamos Scientific Laboratory Report LA-1721, third ed., 94c (1967).

  7. McHugh, J. A., Intern. J. Mass Spectrom. Ion Phys., 3, 267 (1969).

    Article  ADS  CAS  Google Scholar 

  8. White, F. A., Rourke, F. M., and Sheffield, J. C., Appl. Spectroscopy, 12, 46 (1958).

    Article  ADS  CAS  Google Scholar 

  9. Hance, A. B., and Hanrahan, L. R., KAPL-3122, AEC Research and Development Report (1966).

  10. Schmitt, R. A., Smith, R. H., Lasch, J. E., Mosen, A. W., Olehy, G. A., and Vasilevskis, J., Geochim. Cosmochim. Acta, 27, 577 (1963).

    Article  ADS  CAS  Google Scholar 

  11. Podosek, F. A., Earth Planet. Sci. Lett., 8, 183 (1970).

    Article  ADS  CAS  Google Scholar 

  12. Fleischer, R. L., Price, P. B., and Walker, R. M., Geochim. Cosmochim. Acta, 32, 21 (1968).

    Article  ADS  CAS  Google Scholar 

  13. Price, P. B., Fowler, P. H., Kidd, J. M., Kobetich, E. J., Fleischer, R. L., and Nichols, G. E., Phys. Rev., D3, 815 (1971).

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HOFFMAN, D., LAWRENCE, F., MEWHERTER, J. et al. Detection of Plutonium-244 in Nature. Nature 234, 132–134 (1971).

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