Spectroscopy and Spectral Analysis, Volume. 32, Issue 1, 11(2012)
Direct Determination of Hyperfine Structures and Isotope Shifts in the 6s5d 3D→6p5d 3F Transitions of Ba I
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→6p5d 3F transitions of Ba I was taken as an example. A 791 nm laser was used to excite the different hyperfine transitions 6s6s 1S0→6s6p 3P1 for different isotopes of barium and different hyperfine energy-levels of 6s5d 3D2 for these isotopes were populated by the 6s6p 3P1→6s5d 3D2 spontaneous radiations, then the corresponding fluorescence spectra of 6s5d 3D2→6p5d 3F2 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.
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ZHONG Jia-qi, YU Geng-hua, WANG Jin, ZHAN Ming-sheng. Direct Determination of Hyperfine Structures and Isotope Shifts in the 6s5d 3D→6p5d 3F Transitions of Ba I[J]. Spectroscopy and Spectral Analysis, 2012, 32(1): 11
Received: Apr. 5, 2011
Accepted: --
Published Online: Feb. 20, 2012
The Author Email: Jia-qi ZHONG (jqzhong@wipm.ac.cn)