Direct Determination of Hyperfine Structures and Isotope Shifts in the 6s5d3D→6p5d3F Transitions of Ba I
ZHONG Jia-qi1,2,3, YU Geng-hua1,2,3, WANG Jin1,2, ZHAN Ming-sheng1,2*
1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China 2. Center for Cold Atom Physics, Chinese Academy of Sciences, Wuhan 430071, China 3. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
Abstract：In the present experiments, a new method of atomic spectral measurement using states optical pre-selection was proposed and demonstrated, and the measurement of hyperfine-structures and isotope shifts in the 6s5d 3D→6p5d3F transitions of Ba I was taken as an example. A 791 nm laser was used to excite the different hyperfine transitions 6s6s 1S0→6s6p3P1 for different isotopes of barium and different hyperfine energy-levels of 6s5d 3D2 for these isotopes were populated by the 6s6p3P1→6s5d3D2 spontaneous radiations, then the corresponding fluorescence spectra of 6s5d3D2→6p5d3F2 transitions excited by another 778 nm laser were recorded. Comparing of these spectra, 22 lines were recognized and the hyperfine-structure constants of 6s5d 3D2 and 6p5d 3F2 of 135Ba and 137Ba were evaluated consequently while the isotope shifts of these transitions were also determined.
仲嘉琪1,2,3，余庚华1,2,3，王 谨1,2，詹明生1,2* . Ba原子6s5d3D与6p5d3F态的超精细结构及态间跃迁的同位素移动的直接确定[J]. 光谱学与光谱分析, 2012, 32(01): 11-14.
ZHONG Jia-qi1,2,3, YU Geng-hua1,2,3, WANG Jin1,2, ZHAN Ming-sheng1,2* . Direct Determination of Hyperfine Structures and Isotope Shifts in the 6s5d3D→6p5d3F Transitions of Ba I . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 32(01): 11-14.
[1] De S, Dammalapati U, Jungmann K, et al. Phys. Rev. A, 2009, 79: 041402(R). [2] Ishii S Ohlendorf W. Rev. Sci. Instrum.，1972, 43: 1632. [3] Stephen G Schmelling Phys. Rev. A, 1973, 9: 1097. [4] Grundevik P, Lundberg H, Nilsson L, et al. Phys. A- Atoms and Nuclei, 1982, 306: 195. [5] Grundevik P, Gustavsson M，Olsson G, et al. Phys. A- Atoms and Nuclei, 1983, 312: 1. [6] Brust J Gallagher A C. Phys. Rev. A, 1995, 52: 2120. [7] Migdalek J，Baylis W E. Phys. Rev. A, 1990, 42: 6897. [8] Radzig A A，Smirnov B M. Reference Data on Atoms, Molecules, and Ions. Berlin, Heidelberg, New York: Springer, 1985.
