2025/03/26 by Hong Hu, Yu Guo, Hu, H. R. +30
Biochemistry, Genetics and Molecular Biology · Chemical Engineering · Chemistry · #Accelerator Physics (physics.acc-ph) #Analytical Chemistry and Sensors #Electron Spin Resonance Studies #FOS: Physical sciences #Instrumentation and Detectors (physics.ins-det) #Mass Spectrometry Techniques and Applications #Nuclear Experiment (nucl-ex)
paper · pdf · doi:10.48550/arxiv.2503.20637
openalex publication_date 2025/03/26 · openalex created_date 2025/04/01 · openalex updated_date 2026/07/28
With the recent implementation of a radio-frequency quadrupole (RFQ) cooler-buncher and a multi-step laser resonance ionization technique, our previously developed collinear laser spectroscopy setup has been successfully upgraded into a fully functional collinear resonance ionization spectroscopy system. The new system was fully characterized using a bunched ion beam at 30~keV, during which hyperfine structure spectra of 85,87Rb isotopes were measured. An overall efficiency exceeding 1:200 (one resonant ion detected for every 200 ions after the RFQ cooler-buncher) was achieved while maintaining a spectral resolution of 100 MHz. Under these conditions, the extracted hyperfine structure parameters and isotope shift for 85,87Rb show excellent agreement with the literature values. These results demonstrate the system's capability to perform high-resolution and high-sensitivity laser spectroscopy of neutron-rich Rb isotopes, which are expected to be produced at the Beijing Radioactive Ion-beam Facility at a rate of approximately 100 particles per second.