Isotope Separation of Potassium with a magneto-optical combined method

TL;DR

This paper demonstrates a novel isotope separation method for potassium using a combined magneto-optical approach, achieving significant enrichment by leveraging isotope shifts and Stern-Gerlach deflection.

Contribution

The study introduces a new combined magneto-optical technique for isotope separation that enhances enrichment efficiency and can be adapted to other elements.

Findings

$^{40}$K enriched by two orders of magnitude

Effective separation of potassium isotopes using optical pumping and magnetic deflection

Potential extension to other elements with suitable optical schemes

Abstract

Due to the similar physical and chemical properties, isotopes are usually hard to separate. On the other hand, the isotope shifts are very well separated in a high-resolution spectrum, making them possible to be addressed individually by lasers, thus separated. Here we report such an isotope separation experiment with Potassium atoms. The isotopes are independently optical pumped to the desired spin states, and then separated with a Stern-Gerlach scheme. A micro-capillary oven is used to collimate the atomic beam, and a Halbach-type magnet array is used to deflect the desired atoms. Finally, the $^{40}$K is enriched by two orders of magnitude. This magneto-optical combined method provides an effective way to separate isotopes and can be extended to other elements if the relevant optical pumping scheme is feasible.