Published in
arXiv, 2022
DOI: 10.48550/arxiv.2203.07859
Elsevier, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, (1032), p. 166622, 2022
DOI: 10.1016/j.nima.2022.166622
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Construction and commissioning of the collinear laser spectroscopy system at BRIF
,
S. W. Bai,
Y. C. Liu,
P. Zhang,
Y. S. Liu,
H. R. Hu,
H. W. Li,
B. Tang,
B. Q. Cui,
C. Y. He,
X. Ma,
Q. T. Li ,
J. H. Chen,
K. Ma
and other authors.
Abstract
We have constructed a collinear laser spectroscopy (CLS) system installed at the Beijing Radioactive Ion-beam Facility (BRIF), aiming to investigate the nuclear properties of unstable nuclei. The first on-line commissioning experiment of this system was performed using the continuous stable ($^{39}$K) and unstable ($^{38}$K) ion beams produced by impinging a 100-MeV proton beam on a CaO target. Hyperfine structure spectra of these two isotopes are reasonably reproduced, and the extracted magnetic dipole hyperfine parameters and isotope shift agree with the literature values. The on-line experiment demonstrates the overall functioning of this CLS system, opening new opportunities for laser spectroscopy measurement of unstable isotopes at BRIF and other radioactive ion beam facilities in China.