Laser isotope separation of 48Ca for the study of neutrinoless double beta decay and the CANDLES project

Le résumé fourni par la source

We are developing a ⁴⁸Ca isotope enrichment system using laser isotope separation via deflection for the experiments to search for neutrino-less double beta decay. We confirmed with a TOF detector that only ⁴⁸Ca was deflected in the direction of a deflection laser, which was perpendicularly irradiated onto an atomic beam emitted vertically from an atomic beam generator equipped with a simple tube-type collimator. The deflection laser was selectively locked to the absorption wavelength of the ⁴⁸Ca isotope. To improve enrichment and recovery rates, we are developing an atomic beam generator capable of emitting a well-collimated sheet-like beam. Additionally, we are developing a low-cost, high-power laser system. Currently, we have achieved a wavelength-stabilized 2 W output using 24 semiconductor lasers. We aim to advance development further, targeting an annual production of 2 moles as our first milestone.

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