Abstract:
The α-decay energy and halflife of 195mAt were determined to be 6960±20 keV and 385+69 −51 ms respectively, on the basis of genetic correlations in the 169Tm(36Ar, α6n)195At reaction, while those of 195gAt measured simultaneously were 7105±30 keV and 146+21 −17 ms respectively, reconfirming the previously reported values. A new isotope 199Fr was also produced and identified in the same way in the 169Tm(36Ar, 6n)199Fr reaction, yielding Eα= 7655±40 keV and T1/2= 12+10 −4 ms.
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Received: 26 March 1999
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Tagaya, Y., Hashimoto, S., Morita, K. et al. The α-decay energies and halflives of 195g,mAt and 199Fr . EPJ A 5, 123–125 (1999). https://doi.org/10.1007/s100500050266
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DOI: https://doi.org/10.1007/s100500050266