Enhancement of electron–ion recombination rates at low energy range in the heavy ion storage ring CSRm<xref rid="cpb_29_3_033401fn1" ref-type="fn">*</xref><fn id="cpb_29_3_033401fn1"><label>*</label><p>Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0402300) and the National Natural Science Foundation of China (Grant Nos. U1932207, 11904371, and U1732133).</p></fn>

Enhancement of electron–ion recombination rates at low energy range in the heavy ion storage ring CSRm**

Project supported by the National Key Research and Development Program of China (Grant No. 2017YFA0402300) and the National Natural Science Foundation of China (Grant Nos. U1932207, 11904371, and U1732133).

Khan Nadir^{1, 2}, Huang Zhong-Kui¹, Wen Wei-Qiang^{1, 2, †}, Wang Shu-Xing³, Wang Han-Bing¹, Ma Wan-Lu³, Zhu Xiao-Long^{1, 2}, Zhao Dong-Mei¹, Mao Li-Jun^{1, 2}, Li Jie¹, Ma Xiao-Ming¹, Tang Mei-Tang¹, Yin Da-Yu¹, Yang Wei-Qing¹, Yang Jian-Cheng^{1, 2}, Yuan You-Jin^{1, 2}, Zhu Lin-Fan³, Ma Xin-Wen^{1, 2, ‡}

The schematic view of the electron cooler and the experimental setup for electron–ion recombination experiment at the CSRm, Lanzhou. The electron beam produced at the cathode is guided by magnetic field, then merges with ion beam at the straight section of 4.0 m. The electron-beam is then separated from the ion-beam by the magnetic guiding field and collected by the anode. In a dipole magnet downstream to the electron cooler the recombined ions are separated from the primary ion beam, and then counted by a scintillator detector.