Highly sensitive photoassociation spectroscopy of ultracold 23Na133Cs molecular long-range states below the 3S1/2 + 6P3/2 limit<xref rid="cpb_26_12_123702_fn1" ref-type="fn">*</xref> <fn id="cpb_26_12_123702_fn1"> <label>*</label> Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0304203), the ChangJiang Scholars and Innovative Research Team in the University of the Ministry of Education of China (Grant No. IRT13076), the National Natural Science Foundation of China (Grant Nos. 91436108, 61378014, 61675121, 61705123, and 11434007), the Fund for Shanxi “1331 Project” Key Subjects Construction, China, and the Foundation for Outstanding Young Scholars of Shanxi Province, China (Grant No. 201601D021001). </fn>

Highly sensitive photoassociation spectroscopy of ultracold ²³Na¹³³Cs molecular long-range states below the 3S_1/2 + 6P_3/2 limit* *

Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0304203), the ChangJiang Scholars and Innovative Research Team in the University of the Ministry of Education of China (Grant No. IRT13076), the National Natural Science Foundation of China (Grant Nos. 91436108, 61378014, 61675121, 61705123, and 11434007), the Fund for Shanxi “1331 Project” Key Subjects Construction, China, and the Foundation for Outstanding Young Scholars of Shanxi Province, China (Grant No. 201601D021001).

Liu Yanyan^{1, 2}, Wu Jizhou^{1, 2, †}, Liu Wenliang^{1, 2}, Wang Xiaofeng^{1, 2}, Wang Wenhao^{1, 2}, Ma Jie^{1, 2}, Xiao Liantuan^{1, 2}, Jia Suotang^{1, 2}

(color online) The linear fit of the c³Σ⁺ levels to the LeRoy–Bernstein expression to obtain the coefficient C₆. The inset is a magnification of the date near the vertical axis.