Laser spectroscopy of triply charged Th isomer for a nuclear clock.

Thorium-229 (Th) possesses an optical nuclear transition between the ground state (Th) and low-lying isomer (Th). A nuclear clock based on this nuclear-transition frequency is expected to surpass existing atomic clocks owing to its insusceptibility to surrounding fields. In contrast to other charge states, triply charged Th (Th) is the most suitable for highly accurate nuclear clocks because it has closed electronic transitions that enable laser cooling, laser-induced fluorescence detection and state preparation of ions.

Comparison of Nuclear Medicine Therapeutics Targeting PSMA among Alpha-Emitting Nuclides.

Currently, targeted alpha therapy (TAT) is a new therapy involving the administration of a therapeutic drug that combines a substance of α-emitting nuclides that kill cancer cells and a drug that selectively accumulates in cancer cells. It is known to be effective against cancers that are difficult to treat with existing methods, such as cancer cells that are widely spread throughout the whole body, and there are high expectations for its early clinical implementation. The nuclides for TAT, including Tb, At, Bi, Pb (for Bi), Ra, Ac, Th, and U, are known.

Sr(ii) extraction by crown ether in HFC: entropy driven mechanism through HPFTOUD.

The solvent extraction of Sr(ii) was carried out using dicyclohexano-18-crown-6 (DCH18C6) and two HFC mixed solvents MS1 and MS2, where MS1 was composed of 30/60 (w/w)% -1,2-dichloroethylene/HFC-43 (HFC-43: 1,1,1,2,2,3,4,5,5,5-decafluoropentane) and MS2 was 5/95 (w/w)% heptane/HFC-43. Nitric acid and perfuruoro-3-6-9-trioxaundecane-1,11-dioic acid (HPFTOUD) were used to study the effect of acid on the extraction. The maximum distribution ratio of Sr(ii) ( ) observed for HPFTOUD conditions was ∼180, and >10 times larger than aqueous nitric acid conditions.

Observation of magnetic interactions between localized 4f- and itinerant π-electrons in a single crystal of cationic bisphthalocyanine complexes containing diluted spin centres.

Magnetic f-π interactions between localized 4f-electrons and itinerant π-electrons have been observed in a single crystal of bisphthalocyaninato yttrium(iii)/terbium(iii) tetrafluoroborate ([PcYTb][BF]) by measuring electrical conductivity of the crystal in the presence of an external magnetic field.