Abstract
The search for superheavy elements /SHE/ in the carbonaceous chondrite Allende was continued. This time we carried out a thermochromatographic separation at 1050 °C in O2-, resp., H2-gas flow. The volatile fraction /mostly Pb/ was collected on a Pt-foil or trapped in KOH-solution. The heavy element probes were investigated for spontaneous fission activities. We observed zero spontaneous fission decays during 421 days. This yielded an upper limit of ≤2.9 fission x kg−1 x year−1 /95% confidence limit/. We were unable to confirm the existence of a spontaneous fission activity in the meteorite Allende.
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References
J.V. Kratz,Radiochim. Acta, 32 /1983/ 25.
G.N. Flerov, G.M. Ter-Akopyan, A.G. Popeko, B.V. Fefilov, V.G. Subbotin,Yad. Fiz. 26 /1977/ 449; /Sov. J. Nucl. Phys., 26 /1977/ 237/.
A.V. Amirbekyan, L.S. Davtyan, D.V. Markaryan, A.G. Khudaverdyan,Yad. Fiz., 36 /1982/ 1356. /Sov. J. Nucl. Phys., 36 /1982/ 786.
I. Zvara, G.N. Flerov, B.L. Zhuykov, T. Reetz, M.P. Skalaevsky, N.K. Skobelev,Yad. Fiz., 26 /1977/ 455; /Sov. J. Nucl. Phys., 26 /1977/ 240/.
B.L. Zhuikov, I. Zvara,Radiochem. Radioanal. Lett., 44 /1980/ 47.
T. Lund, H.-J. Becker, H. Jungclas, D. Molzahn, P. Vater, R. Brandt,Inorg. Nucl. Chem. Lett., 15 /1979/ 413.
T. Lund, R. Brandt, D. Molzahn, G. Tress, P. Vater, A. Marinov,Z. Phys., A 300 /1981/ 285.
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Lund, T., Tress, G., Khan, E.U. et al. Further attempts to isolate superheavy elements in the meteorite Allende. Journal of Radioanalytical and Nuclear Chemistry Letters 93, 363–369 (1985). https://doi.org/10.1007/BF02210657
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DOI: https://doi.org/10.1007/BF02210657