First steps in the development of the Multi Ion Reflection Apparatus for Collinear Laser Spectroscopy

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS

卷:463

Article; Proceedings Paper

Sels, S.¹  Fischer, P.²  Heylen, H.¹  Lagaki, V.^1,2  Lechner, S.^1,5  Maier, F. M.^1,3  Plattner, P.^1,6  Rosenbusch, M.^2,7  Wienholtz, F.^1,2  Wolf, R. N.^2,8  Noertershaeuser, W.⁴  Schweikhard, L.²  Malbrunot-Ettenauer, S.¹ 

[1] CERN, Expt Phys Dept, ISOLDE, CH-1211 Geneva 23, Switzerland

[2] Univ Greifswald, Inst Phys, D-17487 Greifswald, Germany

[3] Johannes Kepler Univ Linz, Altenbergerstr 69, A-4040 Linz, Austria

[4] Tech Univ Darmstadt, Karolinenpl 5, D-64289 Darmstadt, Germany

[5] Tech Univ Wien, Karlspl 13, A-1040 Vienna, Austria

[6] Univ Innsbruck, Innrain 52, A-6020 Innsbruck, Austria

[7] RIKEN, Nishina Ctr Accelerator Based Sci, Wako, Saitama 3510198, Japan

[8] Univ Sydney, ARC Ctr Engn Quantum Syst, Sydney, NSW, Australia

关键词: Laser spectroscopy;    Hyperfine structure;    Isotope shift;    Nuclear structure;    Exotic nuclei;    Radioactive ion beam;    ISOLDE;    CERN;    Ion trapping;    MR-ToF;    MIRACLS;   

DOI  :  10.1016/j.nimb.2019.04.076

来源: Elsevier

【 摘 要 】

Collinear laser spectroscopy (CLS) has been combined with the multi-reflection time-of-flight (MR-ToF) technique. To this end, a photodetection system has been implemented at the drift region of a MR-ToF apparatus and a laser beam has been sent along the path of the ions that are stored between the two ion-optical mirrors. The main goal of the present proof-of-principle (PoP) experiments, is the confirmation of the expected increase in sensitivity compared to conventional fluorescence-based CIS due to the repeated probing of the trapped ion bunches. The novel method will be used for the precise measurement of nuclear ground- and isomeric-state properties of exotic nuclei with low production yields at radioactive ion-beam facilities. A significant sensitivity improvement of CLS is expected, depending on the half-life and mass of the nuclide of interest. The status of the PoP setup and future improvements are discussed.

【 授权许可】

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