Abstract

By means of the atomic-beam laser spectroscopy, the Zeeman effects of the transitions 4 f 13 ( 2 F o )6 s 2 0 cm -1 → 4 f 13 ( 2 F o 7/2 )6 s 6 p ( 3 P o 0 ) 16742.237 cm -1 , 4 f 13 ( 2 F o 7/2 )6 s 6 p ( 3 P o 1 ) 17343.374 cm -1 in Tm I are systematically investigated by applying the magnetic field up to 250 gauss. From the analysis, the magnetic dipole constants A for the three levels have been determined to be -374.40(35), -737.53(45), -166.56(14) MHz, respectively. The precise g-factors of the upper levels have been determined to be 1.31954(16), 1.02154(10), respectively. The theoretical Zeeman splittings calculated using these values are found to reproduce experimental data well.

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