Sr+ isotope shift measurement

POSTER

Abstract

Precision isotope shift spectroscopy can improve our knowledge of atomic and nuclear structure. Combined with a King plot analysis, such measurements could also constrain sources of new physics beyond the standard model of particle physics. We present preliminary isotope shift measurements of the $5s\ ^2S_{1/2} \rightarrow 5p\ ^2P_{1/2}$ electric dipole transition with a precision at the 100 kHz level. With $^{88}$Sr$^+$, $^{86}$Sr$^+$ and $^{84}$Sr$^+$, we will measure the isotope shifts of the dipole-allowed $4d\ ^2D_{5/2} \rightarrow 5p\ ^2P_{3/2}$ transition, and the narrow $5s\ ^2S_{1/2} \rightarrow 4d\ ^2D_{5/2}$ electric quadrupole transition. We plan to work with the radioisotope $^{90}$Sr$^{+}$ to test for King plot nonlinearities.

*The authors acknowledge support from NSF (1912665).

Authors

  • Xiaoyang Shi

    • University of California, Santa Barbara

  • Michael W. Straus

    • University of California, Santa Barbara

  • Xinghua Li

    • Key Laboratory for Physical Electronics and Devices of the Ministry of Education & Shaanxi Key Lab of Information Photonic Technique, Xi'an Jiaotong U
    • Key Laboratory for Physical Electronics and Devices of the Ministry of Education Shaanxi Key Lab of Information Photonic Technique, Xi’an Jiaotong Uni

  • Sean W. Buechele

    • University of California, Santa Barbara

  • Mingyu Fan

    • University of California, Santa Barbara

  • Craig Holliman

    • University of California, Santa Barbara

  • Andrew Jayich

    • University of California, Santa Barbara