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Given the drastic progress achieved during recent years in our knowledge on the decay and nuclear properties of the thorium isomer 229mTh, the focus of research on this potential nuclear clock transition will turn in the near future from the nuclear physics driven `search and characterization phase towards a laser physics driven `consolidation and realization phase. This prepares the path towards the ultimate goal of the realization of a nuclear frequency standard, the `Nuclear Clock. This article briefly summarizes our present knowledge, focusing on recent achievements, and points to the next steps envisaged on the way towards the Nuclear Clock.
Thorium-229 is a unique case in nuclear physics: it presents a metastable first excited state Th-229m, just a few electronvolts above the nuclear ground state. This so-called isomer is accessible by VUV lasers, which allows transferring the amazing p
It is proposed to use the isomer ionic ground state $^{229m}$Th$^{4+}$ embedded in transparent crystals for precision determination of unknown neutrino parameters. Isolation from solid environment of the proposed nuclear process, along with available
The GERmanium Detector Array (GERDA) experiment at the Gran Sasso underground laboratory (LNGS) of INFN is searching for neutrinoless double-beta ($0 ubetabeta$) decay of $^{76}$Ge. The technological challenge of GERDA is to operate in a background-f
A search for neutrinoless $betabeta$ decay processes accompanied with Majoron emission has been performed using data collected during Phase I of the GERmanium Detector Array (GERDA) experiment at the Laboratori Nazionali del Gran Sasso of INFN (Italy
We report the first observation of the 2$^+$ isomer in $^{52}$Co, produced in the $beta$ decay of the 0$^+$, $^{52}$Ni ground state. We have observed three $gamma$-rays at 849, 1910, and 5185 keV characterizing the $beta$ de-excitation of the isomer.