Magneto-optical isotope enrichment of potassium-40 with transverse cooling  

作　　者：Shangjin Li Zixuan Zeng Bo Yan 李上进;曾梓轩;颜波(School of Physics,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]School of Physics,Zhejiang University,Hangzhou 310027,China

出　　处：《Chinese Optics Letters》2024年第7期1-5,共5页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.U21A20437 and 12074337);the National Key R&D Program of China(No.2022YFA1404203);the Natural Science Foundation of Zhejiang Province(No.LR21A040002);the Zhejiang Province Plan for Science and Technology(No.2020C01019);the Fundamental Research Funds for the Central Universities(No.2021FZZX001-02).

摘　　要：Isotope shifts among different isotopes can be effectively addressed using narrow-linewidth lasers,facilitating laser isotope separation and achieving significant enrichment at a single stage.The separation of potassium isotopes,employing optical pumping and magnetic deflection,has proven to be efficient.To further improve the enrichment of ^(40)K,we introduce 2D transverse cooling to minimize the divergence angle.Through this modification,we demonstrate enrichment of ^(40)K,elevating it from 0.012%to 12%–20%.This represents an enrichment increase by three orders of magnitude,surpassing our previous result by one order.Our method is particularly well-suited for isotope enrichment of elements with extremely low abundance.

关 键 词：isotope separation potassium isotopes two-dimensional transverse cooling 

分 类 号：O56[理学—原子与分子物理]