paper

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

arXiv:2005.01373 · doi:10.1016/j.nuclphysa.2020.121941

Abstract

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 $I^\pm$ decay of naturally occurring Hf isotopes that have been performed using the "source=detector" approach are presented. In 2848 h of data taking, the $I^\pm$ decay of $^{174}$ Hf was observed with T $_{1/2} = (7.0 \pm 1.2) \times 1 0^{16}$ y.

Accepted for publication in Nuclear Physics, Section A

Search for I^± decay of naturally occurring Hf-nuclides using a Cs2​HfCl6​ scintillator

Abstract

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