Search for $\alpha$ decay of naturally occurring Hf-nuclides using a Cs$_2$HfCl$_6$ scintillator

Residual radioactive contaminants of a caesium hafnium chloride (Cs $_{2}$ HfCl $_{6}$ ) crystal scintillator have been measured in a low background setup at the Gran Sasso National Laboratory of the INFN, Italy. The total alpha activity of the detector is at the level of 7.8(3) mBq/kg. The results of direct studies of the $α$ decay of naturally occurring Hf isotopes that have been performed using the “source=detector” approach are presented. In 2848 h of data taking, the $α$ decay of $^{174}$ Hf was observed with T$_{1/2} = (7.0\pm1.2)\times10^{16} $ y.

Search for $α$ decay of naturally occurring Hf-nuclides using a Cs $_{2}$ HfCl $_{6}$ scintillator

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Search for $α$ decay of naturally occurring Hf-nuclides using a Cs $_{2}$ HfCl $_{6}$ scintillator

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Search for αα decay of naturally occurring Hf-nuclides using a Cs22​HfCl66​ scintillator

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Search for αα decay of naturally occurring Hf-nuclides using a Cs22​HfCl66​ scintillator

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Search for $α$ decay of naturally occurring Hf-nuclides using a Cs $_{2}$ HfCl $_{6}$ scintillator

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Search for $α$ decay of naturally occurring Hf-nuclides using a Cs $_{2}$ HfCl $_{6}$ scintillator

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